Annotation of embedaddon/quagga/doc/texinfo.tex, revision 1.1

1.1     ! misho       1: % texinfo.tex -- TeX macros to handle Texinfo files.
        !             2: % 
        !             3: % Load plain if necessary, i.e., if running under initex.
        !             4: \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
        !             5: %
        !             6: \def\texinfoversion{2009-08-14.15}
        !             7: %
        !             8: % Copyright 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
        !             9: % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
        !            10: % 2007, 2008, 2009 Free Software Foundation, Inc.
        !            11: %
        !            12: % This texinfo.tex file is free software: you can redistribute it and/or
        !            13: % modify it under the terms of the GNU General Public License as
        !            14: % published by the Free Software Foundation, either version 3 of the
        !            15: % License, or (at your option) any later version.
        !            16: %
        !            17: % This texinfo.tex file is distributed in the hope that it will be
        !            18: % useful, but WITHOUT ANY WARRANTY; without even the implied warranty
        !            19: % of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            20: % General Public License for more details.
        !            21: %
        !            22: % You should have received a copy of the GNU General Public License
        !            23: % along with this program.  If not, see <http://www.gnu.org/licenses/>.
        !            24: %
        !            25: % As a special exception, when this file is read by TeX when processing
        !            26: % a Texinfo source document, you may use the result without
        !            27: % restriction.  (This has been our intent since Texinfo was invented.)
        !            28: %
        !            29: % Please try the latest version of texinfo.tex before submitting bug
        !            30: % reports; you can get the latest version from:
        !            31: %   http://www.gnu.org/software/texinfo/ (the Texinfo home page), or
        !            32: %   ftp://tug.org/tex/texinfo.tex
        !            33: %     (and all CTAN mirrors, see http://www.ctan.org).
        !            34: % The texinfo.tex in any given distribution could well be out
        !            35: % of date, so if that's what you're using, please check.
        !            36: %
        !            37: % Send bug reports to bug-texinfo@gnu.org.  Please include including a
        !            38: % complete document in each bug report with which we can reproduce the
        !            39: % problem.  Patches are, of course, greatly appreciated.
        !            40: %
        !            41: % To process a Texinfo manual with TeX, it's most reliable to use the
        !            42: % texi2dvi shell script that comes with the distribution.  For a simple
        !            43: % manual foo.texi, however, you can get away with this:
        !            44: %   tex foo.texi
        !            45: %   texindex foo.??
        !            46: %   tex foo.texi
        !            47: %   tex foo.texi
        !            48: %   dvips foo.dvi -o  # or whatever; this makes foo.ps.
        !            49: % The extra TeX runs get the cross-reference information correct.
        !            50: % Sometimes one run after texindex suffices, and sometimes you need more
        !            51: % than two; texi2dvi does it as many times as necessary.
        !            52: %
        !            53: % It is possible to adapt texinfo.tex for other languages, to some
        !            54: % extent.  You can get the existing language-specific files from the
        !            55: % full Texinfo distribution.
        !            56: %
        !            57: % The GNU Texinfo home page is http://www.gnu.org/software/texinfo.
        !            58: 
        !            59: 
        !            60: \message{Loading texinfo [version \texinfoversion]:}
        !            61: 
        !            62: % If in a .fmt file, print the version number
        !            63: % and turn on active characters that we couldn't do earlier because
        !            64: % they might have appeared in the input file name.
        !            65: \everyjob{\message{[Texinfo version \texinfoversion]}%
        !            66:   \catcode`+=\active \catcode`\_=\active}
        !            67: 
        !            68: 
        !            69: \chardef\other=12
        !            70: 
        !            71: % We never want plain's \outer definition of \+ in Texinfo.
        !            72: % For @tex, we can use \tabalign.
        !            73: \let\+ = \relax
        !            74: 
        !            75: % Save some plain tex macros whose names we will redefine.
        !            76: \let\ptexb=\b
        !            77: \let\ptexbullet=\bullet
        !            78: \let\ptexc=\c
        !            79: \let\ptexcomma=\,
        !            80: \let\ptexdot=\.
        !            81: \let\ptexdots=\dots
        !            82: \let\ptexend=\end
        !            83: \let\ptexequiv=\equiv
        !            84: \let\ptexexclam=\!
        !            85: \let\ptexfootnote=\footnote
        !            86: \let\ptexgtr=>
        !            87: \let\ptexhat=^
        !            88: \let\ptexi=\i
        !            89: \let\ptexindent=\indent
        !            90: \let\ptexinsert=\insert
        !            91: \let\ptexlbrace=\{
        !            92: \let\ptexless=<
        !            93: \let\ptexnewwrite\newwrite
        !            94: \let\ptexnoindent=\noindent
        !            95: \let\ptexplus=+
        !            96: \let\ptexrbrace=\}
        !            97: \let\ptexslash=\/
        !            98: \let\ptexstar=\*
        !            99: \let\ptext=\t
        !           100: \let\ptextop=\top
        !           101: {\catcode`\'=\active
        !           102: \global\let\ptexquoteright'}% Math-mode def from plain.tex.
        !           103: \let\ptexraggedright=\raggedright
        !           104: 
        !           105: % If this character appears in an error message or help string, it
        !           106: % starts a new line in the output.
        !           107: \newlinechar = `^^J
        !           108: 
        !           109: % Use TeX 3.0's \inputlineno to get the line number, for better error
        !           110: % messages, but if we're using an old version of TeX, don't do anything.
        !           111: %
        !           112: \ifx\inputlineno\thisisundefined
        !           113:   \let\linenumber = \empty % Pre-3.0.
        !           114: \else
        !           115:   \def\linenumber{l.\the\inputlineno:\space}
        !           116: \fi
        !           117: 
        !           118: % Set up fixed words for English if not already set.
        !           119: \ifx\putwordAppendix\undefined  \gdef\putwordAppendix{Appendix}\fi
        !           120: \ifx\putwordChapter\undefined   \gdef\putwordChapter{Chapter}\fi
        !           121: \ifx\putwordfile\undefined      \gdef\putwordfile{file}\fi
        !           122: \ifx\putwordin\undefined        \gdef\putwordin{in}\fi
        !           123: \ifx\putwordIndexIsEmpty\undefined     \gdef\putwordIndexIsEmpty{(Index is empty)}\fi
        !           124: \ifx\putwordIndexNonexistent\undefined \gdef\putwordIndexNonexistent{(Index is nonexistent)}\fi
        !           125: \ifx\putwordInfo\undefined      \gdef\putwordInfo{Info}\fi
        !           126: \ifx\putwordInstanceVariableof\undefined \gdef\putwordInstanceVariableof{Instance Variable of}\fi
        !           127: \ifx\putwordMethodon\undefined  \gdef\putwordMethodon{Method on}\fi
        !           128: \ifx\putwordNoTitle\undefined   \gdef\putwordNoTitle{No Title}\fi
        !           129: \ifx\putwordof\undefined        \gdef\putwordof{of}\fi
        !           130: \ifx\putwordon\undefined        \gdef\putwordon{on}\fi
        !           131: \ifx\putwordpage\undefined      \gdef\putwordpage{page}\fi
        !           132: \ifx\putwordsection\undefined   \gdef\putwordsection{section}\fi
        !           133: \ifx\putwordSection\undefined   \gdef\putwordSection{Section}\fi
        !           134: \ifx\putwordsee\undefined       \gdef\putwordsee{see}\fi
        !           135: \ifx\putwordSee\undefined       \gdef\putwordSee{See}\fi
        !           136: \ifx\putwordShortTOC\undefined  \gdef\putwordShortTOC{Short Contents}\fi
        !           137: \ifx\putwordTOC\undefined       \gdef\putwordTOC{Table of Contents}\fi
        !           138: %
        !           139: \ifx\putwordMJan\undefined \gdef\putwordMJan{January}\fi
        !           140: \ifx\putwordMFeb\undefined \gdef\putwordMFeb{February}\fi
        !           141: \ifx\putwordMMar\undefined \gdef\putwordMMar{March}\fi
        !           142: \ifx\putwordMApr\undefined \gdef\putwordMApr{April}\fi
        !           143: \ifx\putwordMMay\undefined \gdef\putwordMMay{May}\fi
        !           144: \ifx\putwordMJun\undefined \gdef\putwordMJun{June}\fi
        !           145: \ifx\putwordMJul\undefined \gdef\putwordMJul{July}\fi
        !           146: \ifx\putwordMAug\undefined \gdef\putwordMAug{August}\fi
        !           147: \ifx\putwordMSep\undefined \gdef\putwordMSep{September}\fi
        !           148: \ifx\putwordMOct\undefined \gdef\putwordMOct{October}\fi
        !           149: \ifx\putwordMNov\undefined \gdef\putwordMNov{November}\fi
        !           150: \ifx\putwordMDec\undefined \gdef\putwordMDec{December}\fi
        !           151: %
        !           152: \ifx\putwordDefmac\undefined    \gdef\putwordDefmac{Macro}\fi
        !           153: \ifx\putwordDefspec\undefined   \gdef\putwordDefspec{Special Form}\fi
        !           154: \ifx\putwordDefvar\undefined    \gdef\putwordDefvar{Variable}\fi
        !           155: \ifx\putwordDefopt\undefined    \gdef\putwordDefopt{User Option}\fi
        !           156: \ifx\putwordDeffunc\undefined   \gdef\putwordDeffunc{Function}\fi
        !           157: 
        !           158: % Since the category of space is not known, we have to be careful.
        !           159: \chardef\spacecat = 10
        !           160: \def\spaceisspace{\catcode`\ =\spacecat}
        !           161: 
        !           162: % sometimes characters are active, so we need control sequences.
        !           163: \chardef\colonChar = `\:
        !           164: \chardef\commaChar = `\,
        !           165: \chardef\dashChar  = `\-
        !           166: \chardef\dotChar   = `\.
        !           167: \chardef\exclamChar= `\!
        !           168: \chardef\lquoteChar= `\`
        !           169: \chardef\questChar = `\?
        !           170: \chardef\rquoteChar= `\'
        !           171: \chardef\semiChar  = `\;
        !           172: \chardef\underChar = `\_
        !           173: 
        !           174: % Ignore a token.
        !           175: %
        !           176: \def\gobble#1{}
        !           177: 
        !           178: % The following is used inside several \edef's.
        !           179: \def\makecsname#1{\expandafter\noexpand\csname#1\endcsname}
        !           180: 
        !           181: % Hyphenation fixes.
        !           182: \hyphenation{
        !           183:   Flor-i-da Ghost-script Ghost-view Mac-OS Post-Script
        !           184:   ap-pen-dix bit-map bit-maps
        !           185:   data-base data-bases eshell fall-ing half-way long-est man-u-script
        !           186:   man-u-scripts mini-buf-fer mini-buf-fers over-view par-a-digm
        !           187:   par-a-digms rath-er rec-tan-gu-lar ro-bot-ics se-vere-ly set-up spa-ces
        !           188:   spell-ing spell-ings
        !           189:   stand-alone strong-est time-stamp time-stamps which-ever white-space
        !           190:   wide-spread wrap-around
        !           191: }
        !           192: 
        !           193: % Margin to add to right of even pages, to left of odd pages.
        !           194: \newdimen\bindingoffset
        !           195: \newdimen\normaloffset
        !           196: \newdimen\pagewidth \newdimen\pageheight
        !           197: 
        !           198: % For a final copy, take out the rectangles
        !           199: % that mark overfull boxes (in case you have decided
        !           200: % that the text looks ok even though it passes the margin).
        !           201: %
        !           202: \def\finalout{\overfullrule=0pt}
        !           203: 
        !           204: % @| inserts a changebar to the left of the current line.  It should
        !           205: % surround any changed text.  This approach does *not* work if the
        !           206: % change spans more than two lines of output.  To handle that, we would
        !           207: % have adopt a much more difficult approach (putting marks into the main
        !           208: % vertical list for the beginning and end of each change).
        !           209: %
        !           210: \def\|{%
        !           211:   % \vadjust can only be used in horizontal mode.
        !           212:   \leavevmode
        !           213:   %
        !           214:   % Append this vertical mode material after the current line in the output.
        !           215:   \vadjust{%
        !           216:     % We want to insert a rule with the height and depth of the current
        !           217:     % leading; that is exactly what \strutbox is supposed to record.
        !           218:     \vskip-\baselineskip
        !           219:     %
        !           220:     % \vadjust-items are inserted at the left edge of the type.  So
        !           221:     % the \llap here moves out into the left-hand margin.
        !           222:     \llap{%
        !           223:       %
        !           224:       % For a thicker or thinner bar, change the `1pt'.
        !           225:       \vrule height\baselineskip width1pt
        !           226:       %
        !           227:       % This is the space between the bar and the text.
        !           228:       \hskip 12pt
        !           229:     }%
        !           230:   }%
        !           231: }
        !           232: 
        !           233: % Sometimes it is convenient to have everything in the transcript file
        !           234: % and nothing on the terminal.  We don't just call \tracingall here,
        !           235: % since that produces some useless output on the terminal.  We also make
        !           236: % some effort to order the tracing commands to reduce output in the log
        !           237: % file; cf. trace.sty in LaTeX.
        !           238: %
        !           239: \def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
        !           240: \def\loggingall{%
        !           241:   \tracingstats2
        !           242:   \tracingpages1
        !           243:   \tracinglostchars2  % 2 gives us more in etex
        !           244:   \tracingparagraphs1
        !           245:   \tracingoutput1
        !           246:   \tracingmacros2
        !           247:   \tracingrestores1
        !           248:   \showboxbreadth\maxdimen \showboxdepth\maxdimen
        !           249:   \ifx\eTeXversion\undefined\else % etex gives us more logging
        !           250:     \tracingscantokens1
        !           251:     \tracingifs1
        !           252:     \tracinggroups1
        !           253:     \tracingnesting2
        !           254:     \tracingassigns1
        !           255:   \fi
        !           256:   \tracingcommands3  % 3 gives us more in etex
        !           257:   \errorcontextlines16
        !           258: }%
        !           259: 
        !           260: % add check for \lastpenalty to plain's definitions.  If the last thing
        !           261: % we did was a \nobreak, we don't want to insert more space.
        !           262: %
        !           263: \def\smallbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\smallskipamount
        !           264:   \removelastskip\penalty-50\smallskip\fi\fi}
        !           265: \def\medbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\medskipamount
        !           266:   \removelastskip\penalty-100\medskip\fi\fi}
        !           267: \def\bigbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\bigskipamount
        !           268:   \removelastskip\penalty-200\bigskip\fi\fi}
        !           269: 
        !           270: % For @cropmarks command.
        !           271: % Do @cropmarks to get crop marks.
        !           272: %
        !           273: \newif\ifcropmarks
        !           274: \let\cropmarks = \cropmarkstrue
        !           275: %
        !           276: % Dimensions to add cropmarks at corners.
        !           277: % Added by P. A. MacKay, 12 Nov. 1986
        !           278: %
        !           279: \newdimen\outerhsize \newdimen\outervsize % set by the paper size routines
        !           280: \newdimen\cornerlong  \cornerlong=1pc
        !           281: \newdimen\cornerthick \cornerthick=.3pt
        !           282: \newdimen\topandbottommargin \topandbottommargin=.75in
        !           283: 
        !           284: % Output a mark which sets \thischapter, \thissection and \thiscolor.
        !           285: % We dump everything together because we only have one kind of mark.
        !           286: % This works because we only use \botmark / \topmark, not \firstmark.
        !           287: %
        !           288: % A mark contains a subexpression of the \ifcase ... \fi construct.
        !           289: % \get*marks macros below extract the needed part using \ifcase.
        !           290: %
        !           291: % Another complication is to let the user choose whether \thischapter
        !           292: % (\thissection) refers to the chapter (section) in effect at the top
        !           293: % of a page, or that at the bottom of a page.  The solution is
        !           294: % described on page 260 of The TeXbook.  It involves outputting two
        !           295: % marks for the sectioning macros, one before the section break, and
        !           296: % one after.  I won't pretend I can describe this better than DEK...
        !           297: \def\domark{%
        !           298:   \toks0=\expandafter{\lastchapterdefs}%
        !           299:   \toks2=\expandafter{\lastsectiondefs}%
        !           300:   \toks4=\expandafter{\prevchapterdefs}%
        !           301:   \toks6=\expandafter{\prevsectiondefs}%
        !           302:   \toks8=\expandafter{\lastcolordefs}%
        !           303:   \mark{%
        !           304:                    \the\toks0 \the\toks2
        !           305:       \noexpand\or \the\toks4 \the\toks6
        !           306:     \noexpand\else \the\toks8
        !           307:   }%
        !           308: }
        !           309: % \topmark doesn't work for the very first chapter (after the title
        !           310: % page or the contents), so we use \firstmark there -- this gets us
        !           311: % the mark with the chapter defs, unless the user sneaks in, e.g.,
        !           312: % @setcolor (or @url, or @link, etc.) between @contents and the very
        !           313: % first @chapter.
        !           314: \def\gettopheadingmarks{%
        !           315:   \ifcase0\topmark\fi
        !           316:   \ifx\thischapter\empty \ifcase0\firstmark\fi \fi
        !           317: }
        !           318: \def\getbottomheadingmarks{\ifcase1\botmark\fi}
        !           319: \def\getcolormarks{\ifcase2\topmark\fi}
        !           320: 
        !           321: % Avoid "undefined control sequence" errors.
        !           322: \def\lastchapterdefs{}
        !           323: \def\lastsectiondefs{}
        !           324: \def\prevchapterdefs{}
        !           325: \def\prevsectiondefs{}
        !           326: \def\lastcolordefs{}
        !           327: 
        !           328: % Main output routine.
        !           329: \chardef\PAGE = 255
        !           330: \output = {\onepageout{\pagecontents\PAGE}}
        !           331: 
        !           332: \newbox\headlinebox
        !           333: \newbox\footlinebox
        !           334: 
        !           335: % \onepageout takes a vbox as an argument.  Note that \pagecontents
        !           336: % does insertions, but you have to call it yourself.
        !           337: \def\onepageout#1{%
        !           338:   \ifcropmarks \hoffset=0pt \else \hoffset=\normaloffset \fi
        !           339:   %
        !           340:   \ifodd\pageno  \advance\hoffset by \bindingoffset
        !           341:   \else \advance\hoffset by -\bindingoffset\fi
        !           342:   %
        !           343:   % Do this outside of the \shipout so @code etc. will be expanded in
        !           344:   % the headline as they should be, not taken literally (outputting ''code).
        !           345:   \ifodd\pageno \getoddheadingmarks \else \getevenheadingmarks \fi
        !           346:   \setbox\headlinebox = \vbox{\let\hsize=\pagewidth \makeheadline}%
        !           347:   \ifodd\pageno \getoddfootingmarks \else \getevenfootingmarks \fi
        !           348:   \setbox\footlinebox = \vbox{\let\hsize=\pagewidth \makefootline}%
        !           349:   %
        !           350:   {%
        !           351:     % Have to do this stuff outside the \shipout because we want it to
        !           352:     % take effect in \write's, yet the group defined by the \vbox ends
        !           353:     % before the \shipout runs.
        !           354:     %
        !           355:     \indexdummies         % don't expand commands in the output.
        !           356:     \normalturnoffactive  % \ in index entries must not stay \, e.g., if
        !           357:                % the page break happens to be in the middle of an example.
        !           358:                % We don't want .vr (or whatever) entries like this:
        !           359:                % \entry{{\tt \indexbackslash }acronym}{32}{\code {\acronym}}
        !           360:                % "\acronym" won't work when it's read back in;
        !           361:                % it needs to be
        !           362:                % {\code {{\tt \backslashcurfont }acronym}
        !           363:     \shipout\vbox{%
        !           364:       % Do this early so pdf references go to the beginning of the page.
        !           365:       \ifpdfmakepagedest \pdfdest name{\the\pageno} xyz\fi
        !           366:       %
        !           367:       \ifcropmarks \vbox to \outervsize\bgroup
        !           368:         \hsize = \outerhsize
        !           369:         \vskip-\topandbottommargin
        !           370:         \vtop to0pt{%
        !           371:           \line{\ewtop\hfil\ewtop}%
        !           372:           \nointerlineskip
        !           373:           \line{%
        !           374:             \vbox{\moveleft\cornerthick\nstop}%
        !           375:             \hfill
        !           376:             \vbox{\moveright\cornerthick\nstop}%
        !           377:           }%
        !           378:           \vss}%
        !           379:         \vskip\topandbottommargin
        !           380:         \line\bgroup
        !           381:           \hfil % center the page within the outer (page) hsize.
        !           382:           \ifodd\pageno\hskip\bindingoffset\fi
        !           383:           \vbox\bgroup
        !           384:       \fi
        !           385:       %
        !           386:       \unvbox\headlinebox
        !           387:       \pagebody{#1}%
        !           388:       \ifdim\ht\footlinebox > 0pt
        !           389:         % Only leave this space if the footline is nonempty.
        !           390:         % (We lessened \vsize for it in \oddfootingyyy.)
        !           391:         % The \baselineskip=24pt in plain's \makefootline has no effect.
        !           392:         \vskip 24pt
        !           393:         \unvbox\footlinebox
        !           394:       \fi
        !           395:       %
        !           396:       \ifcropmarks
        !           397:           \egroup % end of \vbox\bgroup
        !           398:         \hfil\egroup % end of (centering) \line\bgroup
        !           399:         \vskip\topandbottommargin plus1fill minus1fill
        !           400:         \boxmaxdepth = \cornerthick
        !           401:         \vbox to0pt{\vss
        !           402:           \line{%
        !           403:             \vbox{\moveleft\cornerthick\nsbot}%
        !           404:             \hfill
        !           405:             \vbox{\moveright\cornerthick\nsbot}%
        !           406:           }%
        !           407:           \nointerlineskip
        !           408:           \line{\ewbot\hfil\ewbot}%
        !           409:         }%
        !           410:       \egroup % \vbox from first cropmarks clause
        !           411:       \fi
        !           412:     }% end of \shipout\vbox
        !           413:   }% end of group with \indexdummies
        !           414:   \advancepageno
        !           415:   \ifnum\outputpenalty>-20000 \else\dosupereject\fi
        !           416: }
        !           417: 
        !           418: \newinsert\margin \dimen\margin=\maxdimen
        !           419: 
        !           420: \def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
        !           421: {\catcode`\@ =11
        !           422: \gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
        !           423: % marginal hacks, juha@viisa.uucp (Juha Takala)
        !           424: \ifvoid\margin\else % marginal info is present
        !           425:   \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi
        !           426: \dimen@=\dp#1\relax \unvbox#1\relax
        !           427: \ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
        !           428: \ifr@ggedbottom \kern-\dimen@ \vfil \fi}
        !           429: }
        !           430: 
        !           431: % Here are the rules for the cropmarks.  Note that they are
        !           432: % offset so that the space between them is truly \outerhsize or \outervsize
        !           433: % (P. A. MacKay, 12 November, 1986)
        !           434: %
        !           435: \def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
        !           436: \def\nstop{\vbox
        !           437:   {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
        !           438: \def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
        !           439: \def\nsbot{\vbox
        !           440:   {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
        !           441: 
        !           442: % Parse an argument, then pass it to #1.  The argument is the rest of
        !           443: % the input line (except we remove a trailing comment).  #1 should be a
        !           444: % macro which expects an ordinary undelimited TeX argument.
        !           445: %
        !           446: \def\parsearg{\parseargusing{}}
        !           447: \def\parseargusing#1#2{%
        !           448:   \def\argtorun{#2}%
        !           449:   \begingroup
        !           450:     \obeylines
        !           451:     \spaceisspace
        !           452:     #1%
        !           453:     \parseargline\empty% Insert the \empty token, see \finishparsearg below.
        !           454: }
        !           455: 
        !           456: {\obeylines %
        !           457:   \gdef\parseargline#1^^M{%
        !           458:     \endgroup % End of the group started in \parsearg.
        !           459:     \argremovecomment #1\comment\ArgTerm%
        !           460:   }%
        !           461: }
        !           462: 
        !           463: % First remove any @comment, then any @c comment.
        !           464: \def\argremovecomment#1\comment#2\ArgTerm{\argremovec #1\c\ArgTerm}
        !           465: \def\argremovec#1\c#2\ArgTerm{\argcheckspaces#1\^^M\ArgTerm}
        !           466: 
        !           467: % Each occurrence of `\^^M' or `<space>\^^M' is replaced by a single space.
        !           468: %
        !           469: % \argremovec might leave us with trailing space, e.g.,
        !           470: %    @end itemize  @c foo
        !           471: % This space token undergoes the same procedure and is eventually removed
        !           472: % by \finishparsearg.
        !           473: %
        !           474: \def\argcheckspaces#1\^^M{\argcheckspacesX#1\^^M \^^M}
        !           475: \def\argcheckspacesX#1 \^^M{\argcheckspacesY#1\^^M}
        !           476: \def\argcheckspacesY#1\^^M#2\^^M#3\ArgTerm{%
        !           477:   \def\temp{#3}%
        !           478:   \ifx\temp\empty
        !           479:     % Do not use \next, perhaps the caller of \parsearg uses it; reuse \temp:
        !           480:     \let\temp\finishparsearg
        !           481:   \else
        !           482:     \let\temp\argcheckspaces
        !           483:   \fi
        !           484:   % Put the space token in:
        !           485:   \temp#1 #3\ArgTerm
        !           486: }
        !           487: 
        !           488: % If a _delimited_ argument is enclosed in braces, they get stripped; so
        !           489: % to get _exactly_ the rest of the line, we had to prevent such situation.
        !           490: % We prepended an \empty token at the very beginning and we expand it now,
        !           491: % just before passing the control to \argtorun.
        !           492: % (Similarly, we have to think about #3 of \argcheckspacesY above: it is
        !           493: % either the null string, or it ends with \^^M---thus there is no danger
        !           494: % that a pair of braces would be stripped.
        !           495: %
        !           496: % But first, we have to remove the trailing space token.
        !           497: %
        !           498: \def\finishparsearg#1 \ArgTerm{\expandafter\argtorun\expandafter{#1}}
        !           499: 
        !           500: % \parseargdef\foo{...}
        !           501: %      is roughly equivalent to
        !           502: % \def\foo{\parsearg\Xfoo}
        !           503: % \def\Xfoo#1{...}
        !           504: %
        !           505: % Actually, I use \csname\string\foo\endcsname, ie. \\foo, as it is my
        !           506: % favourite TeX trick.  --kasal, 16nov03
        !           507: 
        !           508: \def\parseargdef#1{%
        !           509:   \expandafter \doparseargdef \csname\string#1\endcsname #1%
        !           510: }
        !           511: \def\doparseargdef#1#2{%
        !           512:   \def#2{\parsearg#1}%
        !           513:   \def#1##1%
        !           514: }
        !           515: 
        !           516: % Several utility definitions with active space:
        !           517: {
        !           518:   \obeyspaces
        !           519:   \gdef\obeyedspace{ }
        !           520: 
        !           521:   % Make each space character in the input produce a normal interword
        !           522:   % space in the output.  Don't allow a line break at this space, as this
        !           523:   % is used only in environments like @example, where each line of input
        !           524:   % should produce a line of output anyway.
        !           525:   %
        !           526:   \gdef\sepspaces{\obeyspaces\let =\tie}
        !           527: 
        !           528:   % If an index command is used in an @example environment, any spaces
        !           529:   % therein should become regular spaces in the raw index file, not the
        !           530:   % expansion of \tie (\leavevmode \penalty \@M \ ).
        !           531:   \gdef\unsepspaces{\let =\space}
        !           532: }
        !           533: 
        !           534: 
        !           535: \def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
        !           536: 
        !           537: % Define the framework for environments in texinfo.tex.  It's used like this:
        !           538: %
        !           539: %   \envdef\foo{...}
        !           540: %   \def\Efoo{...}
        !           541: %
        !           542: % It's the responsibility of \envdef to insert \begingroup before the
        !           543: % actual body; @end closes the group after calling \Efoo.  \envdef also
        !           544: % defines \thisenv, so the current environment is known; @end checks
        !           545: % whether the environment name matches.  The \checkenv macro can also be
        !           546: % used to check whether the current environment is the one expected.
        !           547: %
        !           548: % Non-false conditionals (@iftex, @ifset) don't fit into this, so they
        !           549: % are not treated as environments; they don't open a group.  (The
        !           550: % implementation of @end takes care not to call \endgroup in this
        !           551: % special case.)
        !           552: 
        !           553: 
        !           554: % At run-time, environments start with this:
        !           555: \def\startenvironment#1{\begingroup\def\thisenv{#1}}
        !           556: % initialize
        !           557: \let\thisenv\empty
        !           558: 
        !           559: % ... but they get defined via ``\envdef\foo{...}'':
        !           560: \long\def\envdef#1#2{\def#1{\startenvironment#1#2}}
        !           561: \def\envparseargdef#1#2{\parseargdef#1{\startenvironment#1#2}}
        !           562: 
        !           563: % Check whether we're in the right environment:
        !           564: \def\checkenv#1{%
        !           565:   \def\temp{#1}%
        !           566:   \ifx\thisenv\temp
        !           567:   \else
        !           568:     \badenverr
        !           569:   \fi
        !           570: }
        !           571: 
        !           572: % Environment mismatch, #1 expected:
        !           573: \def\badenverr{%
        !           574:   \errhelp = \EMsimple
        !           575:   \errmessage{This command can appear only \inenvironment\temp,
        !           576:     not \inenvironment\thisenv}%
        !           577: }
        !           578: \def\inenvironment#1{%
        !           579:   \ifx#1\empty
        !           580:     out of any environment%
        !           581:   \else
        !           582:     in environment \expandafter\string#1%
        !           583:   \fi
        !           584: }
        !           585: 
        !           586: % @end foo executes the definition of \Efoo.
        !           587: % But first, it executes a specialized version of \checkenv
        !           588: %
        !           589: \parseargdef\end{%
        !           590:   \if 1\csname iscond.#1\endcsname
        !           591:   \else
        !           592:     % The general wording of \badenverr may not be ideal, but... --kasal, 06nov03
        !           593:     \expandafter\checkenv\csname#1\endcsname
        !           594:     \csname E#1\endcsname
        !           595:     \endgroup
        !           596:   \fi
        !           597: }
        !           598: 
        !           599: \newhelp\EMsimple{Press RETURN to continue.}
        !           600: 
        !           601: 
        !           602: %% Simple single-character @ commands
        !           603: 
        !           604: % @@ prints an @
        !           605: % Kludge this until the fonts are right (grr).
        !           606: \def\@{{\tt\char64}}
        !           607: 
        !           608: % This is turned off because it was never documented
        !           609: % and you can use @w{...} around a quote to suppress ligatures.
        !           610: %% Define @` and @' to be the same as ` and '
        !           611: %% but suppressing ligatures.
        !           612: %\def\`{{`}}
        !           613: %\def\'{{'}}
        !           614: 
        !           615: % Used to generate quoted braces.
        !           616: \def\mylbrace {{\tt\char123}}
        !           617: \def\myrbrace {{\tt\char125}}
        !           618: \let\{=\mylbrace
        !           619: \let\}=\myrbrace
        !           620: \begingroup
        !           621:   % Definitions to produce \{ and \} commands for indices,
        !           622:   % and @{ and @} for the aux/toc files.
        !           623:   \catcode`\{ = \other \catcode`\} = \other
        !           624:   \catcode`\[ = 1 \catcode`\] = 2
        !           625:   \catcode`\! = 0 \catcode`\\ = \other
        !           626:   !gdef!lbracecmd[\{]%
        !           627:   !gdef!rbracecmd[\}]%
        !           628:   !gdef!lbraceatcmd[@{]%
        !           629:   !gdef!rbraceatcmd[@}]%
        !           630: !endgroup
        !           631: 
        !           632: % @comma{} to avoid , parsing problems.
        !           633: \let\comma = ,
        !           634: 
        !           635: % Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
        !           636: % Others are defined by plain TeX: @` @' @" @^ @~ @= @u @v @H.
        !           637: \let\, = \c
        !           638: \let\dotaccent = \.
        !           639: \def\ringaccent#1{{\accent23 #1}}
        !           640: \let\tieaccent = \t
        !           641: \let\ubaraccent = \b
        !           642: \let\udotaccent = \d
        !           643: 
        !           644: % Other special characters: @questiondown @exclamdown @ordf @ordm
        !           645: % Plain TeX defines: @AA @AE @O @OE @L (plus lowercase versions) @ss.
        !           646: \def\questiondown{?`}
        !           647: \def\exclamdown{!`}
        !           648: \def\ordf{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{a}}}
        !           649: \def\ordm{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{o}}}
        !           650: 
        !           651: % Dotless i and dotless j, used for accents.
        !           652: \def\imacro{i}
        !           653: \def\jmacro{j}
        !           654: \def\dotless#1{%
        !           655:   \def\temp{#1}%
        !           656:   \ifx\temp\imacro \ifmmode\imath \else\ptexi \fi
        !           657:   \else\ifx\temp\jmacro \ifmmode\jmath \else\j \fi
        !           658:   \else \errmessage{@dotless can be used only with i or j}%
        !           659:   \fi\fi
        !           660: }
        !           661: 
        !           662: % The \TeX{} logo, as in plain, but resetting the spacing so that a
        !           663: % period following counts as ending a sentence.  (Idea found in latex.)
        !           664: %
        !           665: \edef\TeX{\TeX \spacefactor=1000 }
        !           666: 
        !           667: % @LaTeX{} logo.  Not quite the same results as the definition in
        !           668: % latex.ltx, since we use a different font for the raised A; it's most
        !           669: % convenient for us to use an explicitly smaller font, rather than using
        !           670: % the \scriptstyle font (since we don't reset \scriptstyle and
        !           671: % \scriptscriptstyle).
        !           672: %
        !           673: \def\LaTeX{%
        !           674:   L\kern-.36em
        !           675:   {\setbox0=\hbox{T}%
        !           676:    \vbox to \ht0{\hbox{\selectfonts\lllsize A}\vss}}%
        !           677:   \kern-.15em
        !           678:   \TeX
        !           679: }
        !           680: 
        !           681: % Be sure we're in horizontal mode when doing a tie, since we make space
        !           682: % equivalent to this in @example-like environments. Otherwise, a space
        !           683: % at the beginning of a line will start with \penalty -- and
        !           684: % since \penalty is valid in vertical mode, we'd end up putting the
        !           685: % penalty on the vertical list instead of in the new paragraph.
        !           686: {\catcode`@ = 11
        !           687:  % Avoid using \@M directly, because that causes trouble
        !           688:  % if the definition is written into an index file.
        !           689:  \global\let\tiepenalty = \@M
        !           690:  \gdef\tie{\leavevmode\penalty\tiepenalty\ }
        !           691: }
        !           692: 
        !           693: % @: forces normal size whitespace following.
        !           694: \def\:{\spacefactor=1000 }
        !           695: 
        !           696: % @* forces a line break.
        !           697: \def\*{\hfil\break\hbox{}\ignorespaces}
        !           698: 
        !           699: % @/ allows a line break.
        !           700: \let\/=\allowbreak
        !           701: 
        !           702: % @. is an end-of-sentence period.
        !           703: \def\.{.\spacefactor=\endofsentencespacefactor\space}
        !           704: 
        !           705: % @! is an end-of-sentence bang.
        !           706: \def\!{!\spacefactor=\endofsentencespacefactor\space}
        !           707: 
        !           708: % @? is an end-of-sentence query.
        !           709: \def\?{?\spacefactor=\endofsentencespacefactor\space}
        !           710: 
        !           711: % @frenchspacing on|off  says whether to put extra space after punctuation.
        !           712: %
        !           713: \def\onword{on}
        !           714: \def\offword{off}
        !           715: %
        !           716: \parseargdef\frenchspacing{%
        !           717:   \def\temp{#1}%
        !           718:   \ifx\temp\onword \plainfrenchspacing
        !           719:   \else\ifx\temp\offword \plainnonfrenchspacing
        !           720:   \else
        !           721:     \errhelp = \EMsimple
        !           722:     \errmessage{Unknown @frenchspacing option `\temp', must be on/off}%
        !           723:   \fi\fi
        !           724: }
        !           725: 
        !           726: % @w prevents a word break.  Without the \leavevmode, @w at the
        !           727: % beginning of a paragraph, when TeX is still in vertical mode, would
        !           728: % produce a whole line of output instead of starting the paragraph.
        !           729: \def\w#1{\leavevmode\hbox{#1}}
        !           730: 
        !           731: % @group ... @end group forces ... to be all on one page, by enclosing
        !           732: % it in a TeX vbox.  We use \vtop instead of \vbox to construct the box
        !           733: % to keep its height that of a normal line.  According to the rules for
        !           734: % \topskip (p.114 of the TeXbook), the glue inserted is
        !           735: % max (\topskip - \ht (first item), 0).  If that height is large,
        !           736: % therefore, no glue is inserted, and the space between the headline and
        !           737: % the text is small, which looks bad.
        !           738: %
        !           739: % Another complication is that the group might be very large.  This can
        !           740: % cause the glue on the previous page to be unduly stretched, because it
        !           741: % does not have much material.  In this case, it's better to add an
        !           742: % explicit \vfill so that the extra space is at the bottom.  The
        !           743: % threshold for doing this is if the group is more than \vfilllimit
        !           744: % percent of a page (\vfilllimit can be changed inside of @tex).
        !           745: %
        !           746: \newbox\groupbox
        !           747: \def\vfilllimit{0.7}
        !           748: %
        !           749: \envdef\group{%
        !           750:   \ifnum\catcode`\^^M=\active \else
        !           751:     \errhelp = \groupinvalidhelp
        !           752:     \errmessage{@group invalid in context where filling is enabled}%
        !           753:   \fi
        !           754:   \startsavinginserts
        !           755:   %
        !           756:   \setbox\groupbox = \vtop\bgroup
        !           757:     % Do @comment since we are called inside an environment such as
        !           758:     % @example, where each end-of-line in the input causes an
        !           759:     % end-of-line in the output.  We don't want the end-of-line after
        !           760:     % the `@group' to put extra space in the output.  Since @group
        !           761:     % should appear on a line by itself (according to the Texinfo
        !           762:     % manual), we don't worry about eating any user text.
        !           763:     \comment
        !           764: }
        !           765: %
        !           766: % The \vtop produces a box with normal height and large depth; thus, TeX puts
        !           767: % \baselineskip glue before it, and (when the next line of text is done)
        !           768: % \lineskip glue after it.  Thus, space below is not quite equal to space
        !           769: % above.  But it's pretty close.
        !           770: \def\Egroup{%
        !           771:     % To get correct interline space between the last line of the group
        !           772:     % and the first line afterwards, we have to propagate \prevdepth.
        !           773:     \endgraf % Not \par, as it may have been set to \lisppar.
        !           774:     \global\dimen1 = \prevdepth
        !           775:   \egroup           % End the \vtop.
        !           776:   % \dimen0 is the vertical size of the group's box.
        !           777:   \dimen0 = \ht\groupbox  \advance\dimen0 by \dp\groupbox
        !           778:   % \dimen2 is how much space is left on the page (more or less).
        !           779:   \dimen2 = \pageheight   \advance\dimen2 by -\pagetotal
        !           780:   % if the group doesn't fit on the current page, and it's a big big
        !           781:   % group, force a page break.
        !           782:   \ifdim \dimen0 > \dimen2
        !           783:     \ifdim \pagetotal < \vfilllimit\pageheight
        !           784:       \page
        !           785:     \fi
        !           786:   \fi
        !           787:   \box\groupbox
        !           788:   \prevdepth = \dimen1
        !           789:   \checkinserts
        !           790: }
        !           791: %
        !           792: % TeX puts in an \escapechar (i.e., `@') at the beginning of the help
        !           793: % message, so this ends up printing `@group can only ...'.
        !           794: %
        !           795: \newhelp\groupinvalidhelp{%
        !           796: group can only be used in environments such as @example,^^J%
        !           797: where each line of input produces a line of output.}
        !           798: 
        !           799: % @need space-in-mils
        !           800: % forces a page break if there is not space-in-mils remaining.
        !           801: 
        !           802: \newdimen\mil  \mil=0.001in
        !           803: 
        !           804: % Old definition--didn't work.
        !           805: %\parseargdef\need{\par %
        !           806: %% This method tries to make TeX break the page naturally
        !           807: %% if the depth of the box does not fit.
        !           808: %{\baselineskip=0pt%
        !           809: %\vtop to #1\mil{\vfil}\kern -#1\mil\nobreak
        !           810: %\prevdepth=-1000pt
        !           811: %}}
        !           812: 
        !           813: \parseargdef\need{%
        !           814:   % Ensure vertical mode, so we don't make a big box in the middle of a
        !           815:   % paragraph.
        !           816:   \par
        !           817:   %
        !           818:   % If the @need value is less than one line space, it's useless.
        !           819:   \dimen0 = #1\mil
        !           820:   \dimen2 = \ht\strutbox
        !           821:   \advance\dimen2 by \dp\strutbox
        !           822:   \ifdim\dimen0 > \dimen2
        !           823:     %
        !           824:     % Do a \strut just to make the height of this box be normal, so the
        !           825:     % normal leading is inserted relative to the preceding line.
        !           826:     % And a page break here is fine.
        !           827:     \vtop to #1\mil{\strut\vfil}%
        !           828:     %
        !           829:     % TeX does not even consider page breaks if a penalty added to the
        !           830:     % main vertical list is 10000 or more.  But in order to see if the
        !           831:     % empty box we just added fits on the page, we must make it consider
        !           832:     % page breaks.  On the other hand, we don't want to actually break the
        !           833:     % page after the empty box.  So we use a penalty of 9999.
        !           834:     %
        !           835:     % There is an extremely small chance that TeX will actually break the
        !           836:     % page at this \penalty, if there are no other feasible breakpoints in
        !           837:     % sight.  (If the user is using lots of big @group commands, which
        !           838:     % almost-but-not-quite fill up a page, TeX will have a hard time doing
        !           839:     % good page breaking, for example.)  However, I could not construct an
        !           840:     % example where a page broke at this \penalty; if it happens in a real
        !           841:     % document, then we can reconsider our strategy.
        !           842:     \penalty9999
        !           843:     %
        !           844:     % Back up by the size of the box, whether we did a page break or not.
        !           845:     \kern -#1\mil
        !           846:     %
        !           847:     % Do not allow a page break right after this kern.
        !           848:     \nobreak
        !           849:   \fi
        !           850: }
        !           851: 
        !           852: % @br   forces paragraph break (and is undocumented).
        !           853: 
        !           854: \let\br = \par
        !           855: 
        !           856: % @page forces the start of a new page.
        !           857: %
        !           858: \def\page{\par\vfill\supereject}
        !           859: 
        !           860: % @exdent text....
        !           861: % outputs text on separate line in roman font, starting at standard page margin
        !           862: 
        !           863: % This records the amount of indent in the innermost environment.
        !           864: % That's how much \exdent should take out.
        !           865: \newskip\exdentamount
        !           866: 
        !           867: % This defn is used inside fill environments such as @defun.
        !           868: \parseargdef\exdent{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}
        !           869: 
        !           870: % This defn is used inside nofill environments such as @example.
        !           871: \parseargdef\nofillexdent{{\advance \leftskip by -\exdentamount
        !           872:   \leftline{\hskip\leftskip{\rm#1}}}}
        !           873: 
        !           874: % @inmargin{WHICH}{TEXT} puts TEXT in the WHICH margin next to the current
        !           875: % paragraph.  For more general purposes, use the \margin insertion
        !           876: % class.  WHICH is `l' or `r'.
        !           877: %
        !           878: \newskip\inmarginspacing \inmarginspacing=1cm
        !           879: \def\strutdepth{\dp\strutbox}
        !           880: %
        !           881: \def\doinmargin#1#2{\strut\vadjust{%
        !           882:   \nobreak
        !           883:   \kern-\strutdepth
        !           884:   \vtop to \strutdepth{%
        !           885:     \baselineskip=\strutdepth
        !           886:     \vss
        !           887:     % if you have multiple lines of stuff to put here, you'll need to
        !           888:     % make the vbox yourself of the appropriate size.
        !           889:     \ifx#1l%
        !           890:       \llap{\ignorespaces #2\hskip\inmarginspacing}%
        !           891:     \else
        !           892:       \rlap{\hskip\hsize \hskip\inmarginspacing \ignorespaces #2}%
        !           893:     \fi
        !           894:     \null
        !           895:   }%
        !           896: }}
        !           897: \def\inleftmargin{\doinmargin l}
        !           898: \def\inrightmargin{\doinmargin r}
        !           899: %
        !           900: % @inmargin{TEXT [, RIGHT-TEXT]}
        !           901: % (if RIGHT-TEXT is given, use TEXT for left page, RIGHT-TEXT for right;
        !           902: % else use TEXT for both).
        !           903: %
        !           904: \def\inmargin#1{\parseinmargin #1,,\finish}
        !           905: \def\parseinmargin#1,#2,#3\finish{% not perfect, but better than nothing.
        !           906:   \setbox0 = \hbox{\ignorespaces #2}%
        !           907:   \ifdim\wd0 > 0pt
        !           908:     \def\lefttext{#1}%  have both texts
        !           909:     \def\righttext{#2}%
        !           910:   \else
        !           911:     \def\lefttext{#1}%  have only one text
        !           912:     \def\righttext{#1}%
        !           913:   \fi
        !           914:   %
        !           915:   \ifodd\pageno
        !           916:     \def\temp{\inrightmargin\righttext}% odd page -> outside is right margin
        !           917:   \else
        !           918:     \def\temp{\inleftmargin\lefttext}%
        !           919:   \fi
        !           920:   \temp
        !           921: }
        !           922: 
        !           923: % @include FILE -- \input text of FILE.
        !           924: %
        !           925: \def\include{\parseargusing\filenamecatcodes\includezzz}
        !           926: \def\includezzz#1{%
        !           927:   \pushthisfilestack
        !           928:   \def\thisfile{#1}%
        !           929:   {%
        !           930:     \makevalueexpandable  % we want to expand any @value in FILE.
        !           931:     \turnoffactive        % and allow special characters in the expansion
        !           932:     \indexnofonts         % Allow `@@' and other weird things in file names.
        !           933:     \edef\temp{\noexpand\input #1 }%
        !           934:     %
        !           935:     % This trickery is to read FILE outside of a group, in case it makes
        !           936:     % definitions, etc.
        !           937:     \expandafter
        !           938:   }\temp
        !           939:   \popthisfilestack
        !           940: }
        !           941: \def\filenamecatcodes{%
        !           942:   \catcode`\\=\other
        !           943:   \catcode`~=\other
        !           944:   \catcode`^=\other
        !           945:   \catcode`_=\other
        !           946:   \catcode`|=\other
        !           947:   \catcode`<=\other
        !           948:   \catcode`>=\other
        !           949:   \catcode`+=\other
        !           950:   \catcode`-=\other
        !           951:   \catcode`\`=\other
        !           952:   \catcode`\'=\other
        !           953: }
        !           954: 
        !           955: \def\pushthisfilestack{%
        !           956:   \expandafter\pushthisfilestackX\popthisfilestack\StackTerm
        !           957: }
        !           958: \def\pushthisfilestackX{%
        !           959:   \expandafter\pushthisfilestackY\thisfile\StackTerm
        !           960: }
        !           961: \def\pushthisfilestackY #1\StackTerm #2\StackTerm {%
        !           962:   \gdef\popthisfilestack{\gdef\thisfile{#1}\gdef\popthisfilestack{#2}}%
        !           963: }
        !           964: 
        !           965: \def\popthisfilestack{\errthisfilestackempty}
        !           966: \def\errthisfilestackempty{\errmessage{Internal error:
        !           967:   the stack of filenames is empty.}}
        !           968: 
        !           969: \def\thisfile{}
        !           970: 
        !           971: % @center line
        !           972: % outputs that line, centered.
        !           973: %
        !           974: \parseargdef\center{%
        !           975:   \ifhmode
        !           976:     \let\next\centerH
        !           977:   \else
        !           978:     \let\next\centerV
        !           979:   \fi
        !           980:   \next{\hfil \ignorespaces#1\unskip \hfil}%
        !           981: }
        !           982: \def\centerH#1{%
        !           983:   {%
        !           984:     \hfil\break
        !           985:     \advance\hsize by -\leftskip
        !           986:     \advance\hsize by -\rightskip
        !           987:     \line{#1}%
        !           988:     \break
        !           989:   }%
        !           990: }
        !           991: \def\centerV#1{\line{\kern\leftskip #1\kern\rightskip}}
        !           992: 
        !           993: % @sp n   outputs n lines of vertical space
        !           994: 
        !           995: \parseargdef\sp{\vskip #1\baselineskip}
        !           996: 
        !           997: % @comment ...line which is ignored...
        !           998: % @c is the same as @comment
        !           999: % @ignore ... @end ignore  is another way to write a comment
        !          1000: 
        !          1001: \def\comment{\begingroup \catcode`\^^M=\other%
        !          1002: \catcode`\@=\other \catcode`\{=\other \catcode`\}=\other%
        !          1003: \commentxxx}
        !          1004: {\catcode`\^^M=\other \gdef\commentxxx#1^^M{\endgroup}}
        !          1005: 
        !          1006: \let\c=\comment
        !          1007: 
        !          1008: % @paragraphindent NCHARS
        !          1009: % We'll use ems for NCHARS, close enough.
        !          1010: % NCHARS can also be the word `asis' or `none'.
        !          1011: % We cannot feasibly implement @paragraphindent asis, though.
        !          1012: %
        !          1013: \def\asisword{asis} % no translation, these are keywords
        !          1014: \def\noneword{none}
        !          1015: %
        !          1016: \parseargdef\paragraphindent{%
        !          1017:   \def\temp{#1}%
        !          1018:   \ifx\temp\asisword
        !          1019:   \else
        !          1020:     \ifx\temp\noneword
        !          1021:       \defaultparindent = 0pt
        !          1022:     \else
        !          1023:       \defaultparindent = #1em
        !          1024:     \fi
        !          1025:   \fi
        !          1026:   \parindent = \defaultparindent
        !          1027: }
        !          1028: 
        !          1029: % @exampleindent NCHARS
        !          1030: % We'll use ems for NCHARS like @paragraphindent.
        !          1031: % It seems @exampleindent asis isn't necessary, but
        !          1032: % I preserve it to make it similar to @paragraphindent.
        !          1033: \parseargdef\exampleindent{%
        !          1034:   \def\temp{#1}%
        !          1035:   \ifx\temp\asisword
        !          1036:   \else
        !          1037:     \ifx\temp\noneword
        !          1038:       \lispnarrowing = 0pt
        !          1039:     \else
        !          1040:       \lispnarrowing = #1em
        !          1041:     \fi
        !          1042:   \fi
        !          1043: }
        !          1044: 
        !          1045: % @firstparagraphindent WORD
        !          1046: % If WORD is `none', then suppress indentation of the first paragraph
        !          1047: % after a section heading.  If WORD is `insert', then do indent at such
        !          1048: % paragraphs.
        !          1049: %
        !          1050: % The paragraph indentation is suppressed or not by calling
        !          1051: % \suppressfirstparagraphindent, which the sectioning commands do.
        !          1052: % We switch the definition of this back and forth according to WORD.
        !          1053: % By default, we suppress indentation.
        !          1054: %
        !          1055: \def\suppressfirstparagraphindent{\dosuppressfirstparagraphindent}
        !          1056: \def\insertword{insert}
        !          1057: %
        !          1058: \parseargdef\firstparagraphindent{%
        !          1059:   \def\temp{#1}%
        !          1060:   \ifx\temp\noneword
        !          1061:     \let\suppressfirstparagraphindent = \dosuppressfirstparagraphindent
        !          1062:   \else\ifx\temp\insertword
        !          1063:     \let\suppressfirstparagraphindent = \relax
        !          1064:   \else
        !          1065:     \errhelp = \EMsimple
        !          1066:     \errmessage{Unknown @firstparagraphindent option `\temp'}%
        !          1067:   \fi\fi
        !          1068: }
        !          1069: 
        !          1070: % Here is how we actually suppress indentation.  Redefine \everypar to
        !          1071: % \kern backwards by \parindent, and then reset itself to empty.
        !          1072: %
        !          1073: % We also make \indent itself not actually do anything until the next
        !          1074: % paragraph.
        !          1075: %
        !          1076: \gdef\dosuppressfirstparagraphindent{%
        !          1077:   \gdef\indent{%
        !          1078:     \restorefirstparagraphindent
        !          1079:     \indent
        !          1080:   }%
        !          1081:   \gdef\noindent{%
        !          1082:     \restorefirstparagraphindent
        !          1083:     \noindent
        !          1084:   }%
        !          1085:   \global\everypar = {%
        !          1086:     \kern -\parindent
        !          1087:     \restorefirstparagraphindent
        !          1088:   }%
        !          1089: }
        !          1090: 
        !          1091: \gdef\restorefirstparagraphindent{%
        !          1092:   \global \let \indent = \ptexindent
        !          1093:   \global \let \noindent = \ptexnoindent
        !          1094:   \global \everypar = {}%
        !          1095: }
        !          1096: 
        !          1097: 
        !          1098: % @asis just yields its argument.  Used with @table, for example.
        !          1099: %
        !          1100: \def\asis#1{#1}
        !          1101: 
        !          1102: % @math outputs its argument in math mode.
        !          1103: %
        !          1104: % One complication: _ usually means subscripts, but it could also mean
        !          1105: % an actual _ character, as in @math{@var{some_variable} + 1}.  So make
        !          1106: % _ active, and distinguish by seeing if the current family is \slfam,
        !          1107: % which is what @var uses.
        !          1108: {
        !          1109:   \catcode`\_ = \active
        !          1110:   \gdef\mathunderscore{%
        !          1111:     \catcode`\_=\active
        !          1112:     \def_{\ifnum\fam=\slfam \_\else\sb\fi}%
        !          1113:   }
        !          1114: }
        !          1115: % Another complication: we want \\ (and @\) to output a \ character.
        !          1116: % FYI, plain.tex uses \\ as a temporary control sequence (why?), but
        !          1117: % this is not advertised and we don't care.  Texinfo does not
        !          1118: % otherwise define @\.
        !          1119: %
        !          1120: % The \mathchar is class=0=ordinary, family=7=ttfam, position=5C=\.
        !          1121: \def\mathbackslash{\ifnum\fam=\ttfam \mathchar"075C \else\backslash \fi}
        !          1122: %
        !          1123: \def\math{%
        !          1124:   \tex
        !          1125:   \mathunderscore
        !          1126:   \let\\ = \mathbackslash
        !          1127:   \mathactive
        !          1128:   % make the texinfo accent commands work in math mode
        !          1129:   \let\"=\ddot
        !          1130:   \let\'=\acute
        !          1131:   \let\==\bar
        !          1132:   \let\^=\hat
        !          1133:   \let\`=\grave
        !          1134:   \let\u=\breve
        !          1135:   \let\v=\check
        !          1136:   \let\~=\tilde
        !          1137:   \let\dotaccent=\dot
        !          1138:   $\finishmath
        !          1139: }
        !          1140: \def\finishmath#1{#1$\endgroup}  % Close the group opened by \tex.
        !          1141: 
        !          1142: % Some active characters (such as <) are spaced differently in math.
        !          1143: % We have to reset their definitions in case the @math was an argument
        !          1144: % to a command which sets the catcodes (such as @item or @section).
        !          1145: %
        !          1146: {
        !          1147:   \catcode`^ = \active
        !          1148:   \catcode`< = \active
        !          1149:   \catcode`> = \active
        !          1150:   \catcode`+ = \active
        !          1151:   \catcode`' = \active
        !          1152:   \gdef\mathactive{%
        !          1153:     \let^ = \ptexhat
        !          1154:     \let< = \ptexless
        !          1155:     \let> = \ptexgtr
        !          1156:     \let+ = \ptexplus
        !          1157:     \let' = \ptexquoteright
        !          1158:   }
        !          1159: }
        !          1160: 
        !          1161: % Some math mode symbols.
        !          1162: \def\bullet{$\ptexbullet$}
        !          1163: \def\geq{\ifmmode \ge\else $\ge$\fi}
        !          1164: \def\leq{\ifmmode \le\else $\le$\fi}
        !          1165: \def\minus{\ifmmode -\else $-$\fi}
        !          1166: 
        !          1167: % @dots{} outputs an ellipsis using the current font.
        !          1168: % We do .5em per period so that it has the same spacing in the cm
        !          1169: % typewriter fonts as three actual period characters; on the other hand,
        !          1170: % in other typewriter fonts three periods are wider than 1.5em.  So do
        !          1171: % whichever is larger.
        !          1172: %
        !          1173: \def\dots{%
        !          1174:   \leavevmode
        !          1175:   \setbox0=\hbox{...}% get width of three periods
        !          1176:   \ifdim\wd0 > 1.5em
        !          1177:     \dimen0 = \wd0
        !          1178:   \else
        !          1179:     \dimen0 = 1.5em
        !          1180:   \fi
        !          1181:   \hbox to \dimen0{%
        !          1182:     \hskip 0pt plus.25fil
        !          1183:     .\hskip 0pt plus1fil
        !          1184:     .\hskip 0pt plus1fil
        !          1185:     .\hskip 0pt plus.5fil
        !          1186:   }%
        !          1187: }
        !          1188: 
        !          1189: % @enddots{} is an end-of-sentence ellipsis.
        !          1190: %
        !          1191: \def\enddots{%
        !          1192:   \dots
        !          1193:   \spacefactor=\endofsentencespacefactor
        !          1194: }
        !          1195: 
        !          1196: % @comma{} is so commas can be inserted into text without messing up
        !          1197: % Texinfo's parsing.
        !          1198: %
        !          1199: \let\comma = ,
        !          1200: 
        !          1201: % @refill is a no-op.
        !          1202: \let\refill=\relax
        !          1203: 
        !          1204: % If working on a large document in chapters, it is convenient to
        !          1205: % be able to disable indexing, cross-referencing, and contents, for test runs.
        !          1206: % This is done with @novalidate (before @setfilename).
        !          1207: %
        !          1208: \newif\iflinks \linkstrue % by default we want the aux files.
        !          1209: \let\novalidate = \linksfalse
        !          1210: 
        !          1211: % @setfilename is done at the beginning of every texinfo file.
        !          1212: % So open here the files we need to have open while reading the input.
        !          1213: % This makes it possible to make a .fmt file for texinfo.
        !          1214: \def\setfilename{%
        !          1215:    \fixbackslash  % Turn off hack to swallow `\input texinfo'.
        !          1216:    \iflinks
        !          1217:      \tryauxfile
        !          1218:      % Open the new aux file.  TeX will close it automatically at exit.
        !          1219:      \immediate\openout\auxfile=\jobname.aux
        !          1220:    \fi % \openindices needs to do some work in any case.
        !          1221:    \openindices
        !          1222:    \let\setfilename=\comment % Ignore extra @setfilename cmds.
        !          1223:    %
        !          1224:    % If texinfo.cnf is present on the system, read it.
        !          1225:    % Useful for site-wide @afourpaper, etc.
        !          1226:    \openin 1 texinfo.cnf
        !          1227:    \ifeof 1 \else \input texinfo.cnf \fi
        !          1228:    \closein 1
        !          1229:    %
        !          1230:    \comment % Ignore the actual filename.
        !          1231: }
        !          1232: 
        !          1233: % Called from \setfilename.
        !          1234: %
        !          1235: \def\openindices{%
        !          1236:   \newindex{cp}%
        !          1237:   \newcodeindex{fn}%
        !          1238:   \newcodeindex{vr}%
        !          1239:   \newcodeindex{tp}%
        !          1240:   \newcodeindex{ky}%
        !          1241:   \newcodeindex{pg}%
        !          1242: }
        !          1243: 
        !          1244: % @bye.
        !          1245: \outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
        !          1246: 
        !          1247: 
        !          1248: \message{pdf,}
        !          1249: % adobe `portable' document format
        !          1250: \newcount\tempnum
        !          1251: \newcount\lnkcount
        !          1252: \newtoks\filename
        !          1253: \newcount\filenamelength
        !          1254: \newcount\pgn
        !          1255: \newtoks\toksA
        !          1256: \newtoks\toksB
        !          1257: \newtoks\toksC
        !          1258: \newtoks\toksD
        !          1259: \newbox\boxA
        !          1260: \newcount\countA
        !          1261: \newif\ifpdf
        !          1262: \newif\ifpdfmakepagedest
        !          1263: 
        !          1264: % when pdftex is run in dvi mode, \pdfoutput is defined (so \pdfoutput=1
        !          1265: % can be set).  So we test for \relax and 0 as well as \undefined,
        !          1266: % borrowed from ifpdf.sty.
        !          1267: \ifx\pdfoutput\undefined
        !          1268: \else
        !          1269:   \ifx\pdfoutput\relax
        !          1270:   \else
        !          1271:     \ifcase\pdfoutput
        !          1272:     \else
        !          1273:       \pdftrue
        !          1274:     \fi
        !          1275:   \fi
        !          1276: \fi
        !          1277: 
        !          1278: % PDF uses PostScript string constants for the names of xref targets,
        !          1279: % for display in the outlines, and in other places.  Thus, we have to
        !          1280: % double any backslashes.  Otherwise, a name like "\node" will be
        !          1281: % interpreted as a newline (\n), followed by o, d, e.  Not good.
        !          1282: % http://www.ntg.nl/pipermail/ntg-pdftex/2004-July/000654.html
        !          1283: % (and related messages, the final outcome is that it is up to the TeX
        !          1284: % user to double the backslashes and otherwise make the string valid, so
        !          1285: % that's what we do).
        !          1286: 
        !          1287: % double active backslashes.
        !          1288: %
        !          1289: {\catcode`\@=0 \catcode`\\=\active
        !          1290:  @gdef@activebackslashdouble{%
        !          1291:    @catcode`@\=@active
        !          1292:    @let\=@doublebackslash}
        !          1293: }
        !          1294: 
        !          1295: % To handle parens, we must adopt a different approach, since parens are
        !          1296: % not active characters.  hyperref.dtx (which has the same problem as
        !          1297: % us) handles it with this amazing macro to replace tokens, with minor
        !          1298: % changes for Texinfo.  It is included here under the GPL by permission
        !          1299: % from the author, Heiko Oberdiek.
        !          1300: %
        !          1301: % #1 is the tokens to replace.
        !          1302: % #2 is the replacement.
        !          1303: % #3 is the control sequence with the string.
        !          1304: %
        !          1305: \def\HyPsdSubst#1#2#3{%
        !          1306:   \def\HyPsdReplace##1#1##2\END{%
        !          1307:     ##1%
        !          1308:     \ifx\\##2\\%
        !          1309:     \else
        !          1310:       #2%
        !          1311:       \HyReturnAfterFi{%
        !          1312:         \HyPsdReplace##2\END
        !          1313:       }%
        !          1314:     \fi
        !          1315:   }%
        !          1316:   \xdef#3{\expandafter\HyPsdReplace#3#1\END}%
        !          1317: }
        !          1318: \long\def\HyReturnAfterFi#1\fi{\fi#1}
        !          1319: 
        !          1320: % #1 is a control sequence in which to do the replacements.
        !          1321: \def\backslashparens#1{%
        !          1322:   \xdef#1{#1}% redefine it as its expansion; the definition is simply
        !          1323:              % \lastnode when called from \setref -> \pdfmkdest.
        !          1324:   \HyPsdSubst{(}{\realbackslash(}{#1}%
        !          1325:   \HyPsdSubst{)}{\realbackslash)}{#1}%
        !          1326: }
        !          1327: 
        !          1328: \newhelp\nopdfimagehelp{Texinfo supports .png, .jpg, .jpeg, and .pdf images
        !          1329: with PDF output, and none of those formats could be found.  (.eps cannot
        !          1330: be supported due to the design of the PDF format; use regular TeX (DVI
        !          1331: output) for that.)}
        !          1332: 
        !          1333: \ifpdf
        !          1334:   %
        !          1335:   % Color manipulation macros based on pdfcolor.tex,
        !          1336:   % except using rgb instead of cmyk; the latter is said to render as a
        !          1337:   % very dark gray on-screen and a very dark halftone in print, instead
        !          1338:   % of actual black.
        !          1339:   \def\rgbDarkRed{0.50 0.09 0.12}
        !          1340:   \def\rgbBlack{0 0 0}
        !          1341:   %
        !          1342:   % k sets the color for filling (usual text, etc.);
        !          1343:   % K sets the color for stroking (thin rules, e.g., normal _'s).
        !          1344:   \def\pdfsetcolor#1{\pdfliteral{#1 rg  #1 RG}}
        !          1345:   %
        !          1346:   % Set color, and create a mark which defines \thiscolor accordingly,
        !          1347:   % so that \makeheadline knows which color to restore.
        !          1348:   \def\setcolor#1{%
        !          1349:     \xdef\lastcolordefs{\gdef\noexpand\thiscolor{#1}}%
        !          1350:     \domark
        !          1351:     \pdfsetcolor{#1}%
        !          1352:   }
        !          1353:   %
        !          1354:   \def\maincolor{\rgbBlack}
        !          1355:   \pdfsetcolor{\maincolor}
        !          1356:   \edef\thiscolor{\maincolor}
        !          1357:   \def\lastcolordefs{}
        !          1358:   %
        !          1359:   \def\makefootline{%
        !          1360:     \baselineskip24pt
        !          1361:     \line{\pdfsetcolor{\maincolor}\the\footline}%
        !          1362:   }
        !          1363:   %
        !          1364:   \def\makeheadline{%
        !          1365:     \vbox to 0pt{%
        !          1366:       \vskip-22.5pt
        !          1367:       \line{%
        !          1368:         \vbox to8.5pt{}%
        !          1369:         % Extract \thiscolor definition from the marks.
        !          1370:         \getcolormarks
        !          1371:         % Typeset the headline with \maincolor, then restore the color.
        !          1372:         \pdfsetcolor{\maincolor}\the\headline\pdfsetcolor{\thiscolor}%
        !          1373:       }%
        !          1374:       \vss
        !          1375:     }%
        !          1376:     \nointerlineskip
        !          1377:   }
        !          1378:   %
        !          1379:   %
        !          1380:   \pdfcatalog{/PageMode /UseOutlines}
        !          1381:   %
        !          1382:   % #1 is image name, #2 width (might be empty/whitespace), #3 height (ditto).
        !          1383:   \def\dopdfimage#1#2#3{%
        !          1384:     \def\imagewidth{#2}\setbox0 = \hbox{\ignorespaces #2}%
        !          1385:     \def\imageheight{#3}\setbox2 = \hbox{\ignorespaces #3}%
        !          1386:     %
        !          1387:     % pdftex (and the PDF format) support .png, .jpg, .pdf (among
        !          1388:     % others).  Let's try in that order.
        !          1389:     \let\pdfimgext=\empty
        !          1390:     \begingroup
        !          1391:       \openin 1 #1.png \ifeof 1
        !          1392:         \openin 1 #1.jpg \ifeof 1
        !          1393:           \openin 1 #1.jpeg \ifeof 1
        !          1394:             \openin 1 #1.JPG \ifeof 1
        !          1395:               \openin 1 #1.pdf \ifeof 1
        !          1396:                 \openin 1 #1.PDF \ifeof 1
        !          1397:                   \errhelp = \nopdfimagehelp
        !          1398:                   \errmessage{Could not find image file #1 for pdf}%
        !          1399:                 \else \gdef\pdfimgext{PDF}%
        !          1400:                 \fi
        !          1401:               \else \gdef\pdfimgext{pdf}%
        !          1402:               \fi
        !          1403:             \else \gdef\pdfimgext{JPG}%
        !          1404:             \fi
        !          1405:           \else \gdef\pdfimgext{jpeg}%
        !          1406:           \fi
        !          1407:         \else \gdef\pdfimgext{jpg}%
        !          1408:         \fi
        !          1409:       \else \gdef\pdfimgext{png}%
        !          1410:       \fi
        !          1411:       \closein 1
        !          1412:     \endgroup
        !          1413:     %
        !          1414:     % without \immediate, ancient pdftex seg faults when the same image is
        !          1415:     % included twice.  (Version 3.14159-pre-1.0-unofficial-20010704.)
        !          1416:     \ifnum\pdftexversion < 14
        !          1417:       \immediate\pdfimage
        !          1418:     \else
        !          1419:       \immediate\pdfximage
        !          1420:     \fi
        !          1421:       \ifdim \wd0 >0pt width \imagewidth \fi
        !          1422:       \ifdim \wd2 >0pt height \imageheight \fi
        !          1423:       \ifnum\pdftexversion<13
        !          1424:          #1.\pdfimgext
        !          1425:        \else
        !          1426:          {#1.\pdfimgext}%
        !          1427:        \fi
        !          1428:     \ifnum\pdftexversion < 14 \else
        !          1429:       \pdfrefximage \pdflastximage
        !          1430:     \fi}
        !          1431:   %
        !          1432:   \def\pdfmkdest#1{{%
        !          1433:     % We have to set dummies so commands such as @code, and characters
        !          1434:     % such as \, aren't expanded when present in a section title.
        !          1435:     \indexnofonts
        !          1436:     \turnoffactive
        !          1437:     \activebackslashdouble
        !          1438:     \makevalueexpandable
        !          1439:     \def\pdfdestname{#1}%
        !          1440:     \backslashparens\pdfdestname
        !          1441:     \safewhatsit{\pdfdest name{\pdfdestname} xyz}%
        !          1442:   }}
        !          1443:   %
        !          1444:   % used to mark target names; must be expandable.
        !          1445:   \def\pdfmkpgn#1{#1}
        !          1446:   %
        !          1447:   % by default, use a color that is dark enough to print on paper as
        !          1448:   % nearly black, but still distinguishable for online viewing.
        !          1449:   \def\urlcolor{\rgbDarkRed}
        !          1450:   \def\linkcolor{\rgbDarkRed}
        !          1451:   \def\endlink{\setcolor{\maincolor}\pdfendlink}
        !          1452:   %
        !          1453:   % Adding outlines to PDF; macros for calculating structure of outlines
        !          1454:   % come from Petr Olsak
        !          1455:   \def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0%
        !          1456:     \else \csname#1\endcsname \fi}
        !          1457:   \def\advancenumber#1{\tempnum=\expnumber{#1}\relax
        !          1458:     \advance\tempnum by 1
        !          1459:     \expandafter\xdef\csname#1\endcsname{\the\tempnum}}
        !          1460:   %
        !          1461:   % #1 is the section text, which is what will be displayed in the
        !          1462:   % outline by the pdf viewer.  #2 is the pdf expression for the number
        !          1463:   % of subentries (or empty, for subsubsections).  #3 is the node text,
        !          1464:   % which might be empty if this toc entry had no corresponding node.
        !          1465:   % #4 is the page number
        !          1466:   %
        !          1467:   \def\dopdfoutline#1#2#3#4{%
        !          1468:     % Generate a link to the node text if that exists; else, use the
        !          1469:     % page number.  We could generate a destination for the section
        !          1470:     % text in the case where a section has no node, but it doesn't
        !          1471:     % seem worth the trouble, since most documents are normally structured.
        !          1472:     \def\pdfoutlinedest{#3}%
        !          1473:     \ifx\pdfoutlinedest\empty
        !          1474:       \def\pdfoutlinedest{#4}%
        !          1475:     \else
        !          1476:       % Doubled backslashes in the name.
        !          1477:       {\activebackslashdouble \xdef\pdfoutlinedest{#3}%
        !          1478:        \backslashparens\pdfoutlinedest}%
        !          1479:     \fi
        !          1480:     %
        !          1481:     % Also double the backslashes in the display string.
        !          1482:     {\activebackslashdouble \xdef\pdfoutlinetext{#1}%
        !          1483:      \backslashparens\pdfoutlinetext}%
        !          1484:     %
        !          1485:     \pdfoutline goto name{\pdfmkpgn{\pdfoutlinedest}}#2{\pdfoutlinetext}%
        !          1486:   }
        !          1487:   %
        !          1488:   \def\pdfmakeoutlines{%
        !          1489:     \begingroup
        !          1490:       % Thanh's hack / proper braces in bookmarks
        !          1491:       \edef\mylbrace{\iftrue \string{\else}\fi}\let\{=\mylbrace
        !          1492:       \edef\myrbrace{\iffalse{\else\string}\fi}\let\}=\myrbrace
        !          1493:       %
        !          1494:       % Read toc silently, to get counts of subentries for \pdfoutline.
        !          1495:       \def\numchapentry##1##2##3##4{%
        !          1496:        \def\thischapnum{##2}%
        !          1497:        \def\thissecnum{0}%
        !          1498:        \def\thissubsecnum{0}%
        !          1499:       }%
        !          1500:       \def\numsecentry##1##2##3##4{%
        !          1501:        \advancenumber{chap\thischapnum}%
        !          1502:        \def\thissecnum{##2}%
        !          1503:        \def\thissubsecnum{0}%
        !          1504:       }%
        !          1505:       \def\numsubsecentry##1##2##3##4{%
        !          1506:        \advancenumber{sec\thissecnum}%
        !          1507:        \def\thissubsecnum{##2}%
        !          1508:       }%
        !          1509:       \def\numsubsubsecentry##1##2##3##4{%
        !          1510:        \advancenumber{subsec\thissubsecnum}%
        !          1511:       }%
        !          1512:       \def\thischapnum{0}%
        !          1513:       \def\thissecnum{0}%
        !          1514:       \def\thissubsecnum{0}%
        !          1515:       %
        !          1516:       % use \def rather than \let here because we redefine \chapentry et
        !          1517:       % al. a second time, below.
        !          1518:       \def\appentry{\numchapentry}%
        !          1519:       \def\appsecentry{\numsecentry}%
        !          1520:       \def\appsubsecentry{\numsubsecentry}%
        !          1521:       \def\appsubsubsecentry{\numsubsubsecentry}%
        !          1522:       \def\unnchapentry{\numchapentry}%
        !          1523:       \def\unnsecentry{\numsecentry}%
        !          1524:       \def\unnsubsecentry{\numsubsecentry}%
        !          1525:       \def\unnsubsubsecentry{\numsubsubsecentry}%
        !          1526:       \readdatafile{toc}%
        !          1527:       %
        !          1528:       % Read toc second time, this time actually producing the outlines.
        !          1529:       % The `-' means take the \expnumber as the absolute number of
        !          1530:       % subentries, which we calculated on our first read of the .toc above.
        !          1531:       %
        !          1532:       % We use the node names as the destinations.
        !          1533:       \def\numchapentry##1##2##3##4{%
        !          1534:         \dopdfoutline{##1}{count-\expnumber{chap##2}}{##3}{##4}}%
        !          1535:       \def\numsecentry##1##2##3##4{%
        !          1536:         \dopdfoutline{##1}{count-\expnumber{sec##2}}{##3}{##4}}%
        !          1537:       \def\numsubsecentry##1##2##3##4{%
        !          1538:         \dopdfoutline{##1}{count-\expnumber{subsec##2}}{##3}{##4}}%
        !          1539:       \def\numsubsubsecentry##1##2##3##4{% count is always zero
        !          1540:         \dopdfoutline{##1}{}{##3}{##4}}%
        !          1541:       %
        !          1542:       % PDF outlines are displayed using system fonts, instead of
        !          1543:       % document fonts.  Therefore we cannot use special characters,
        !          1544:       % since the encoding is unknown.  For example, the eogonek from
        !          1545:       % Latin 2 (0xea) gets translated to a | character.  Info from
        !          1546:       % Staszek Wawrykiewicz, 19 Jan 2004 04:09:24 +0100.
        !          1547:       %
        !          1548:       % xx to do this right, we have to translate 8-bit characters to
        !          1549:       % their "best" equivalent, based on the @documentencoding.  Right
        !          1550:       % now, I guess we'll just let the pdf reader have its way.
        !          1551:       \indexnofonts
        !          1552:       \setupdatafile
        !          1553:       \catcode`\\=\active \otherbackslash
        !          1554:       \input \tocreadfilename
        !          1555:     \endgroup
        !          1556:   }
        !          1557:   %
        !          1558:   \def\skipspaces#1{\def\PP{#1}\def\D{|}%
        !          1559:     \ifx\PP\D\let\nextsp\relax
        !          1560:     \else\let\nextsp\skipspaces
        !          1561:       \ifx\p\space\else\addtokens{\filename}{\PP}%
        !          1562:         \advance\filenamelength by 1
        !          1563:       \fi
        !          1564:     \fi
        !          1565:     \nextsp}
        !          1566:   \def\getfilename#1{\filenamelength=0\expandafter\skipspaces#1|\relax}
        !          1567:   \ifnum\pdftexversion < 14
        !          1568:     \let \startlink \pdfannotlink
        !          1569:   \else
        !          1570:     \let \startlink \pdfstartlink
        !          1571:   \fi
        !          1572:   % make a live url in pdf output.
        !          1573:   \def\pdfurl#1{%
        !          1574:     \begingroup
        !          1575:       % it seems we really need yet another set of dummies; have not
        !          1576:       % tried to figure out what each command should do in the context
        !          1577:       % of @url.  for now, just make @/ a no-op, that's the only one
        !          1578:       % people have actually reported a problem with.
        !          1579:       %
        !          1580:       \normalturnoffactive
        !          1581:       \def\@{@}%
        !          1582:       \let\/=\empty
        !          1583:       \makevalueexpandable
        !          1584:       % do we want to go so far as to use \indexnofonts instead of just
        !          1585:       % special-casing \var here?
        !          1586:       \def\var##1{##1}%
        !          1587:       %
        !          1588:       \leavevmode\setcolor{\urlcolor}%
        !          1589:       \startlink attr{/Border [0 0 0]}%
        !          1590:         user{/Subtype /Link /A << /S /URI /URI (#1) >>}%
        !          1591:     \endgroup}
        !          1592:   \def\pdfgettoks#1.{\setbox\boxA=\hbox{\toksA={#1.}\toksB={}\maketoks}}
        !          1593:   \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks}
        !          1594:   \def\adn#1{\addtokens{\toksC}{#1}\global\countA=1\let\next=\maketoks}
        !          1595:   \def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}\toksA={#2}}
        !          1596:   \def\maketoks{%
        !          1597:     \expandafter\poptoks\the\toksA|ENDTOKS|\relax
        !          1598:     \ifx\first0\adn0
        !          1599:     \else\ifx\first1\adn1 \else\ifx\first2\adn2 \else\ifx\first3\adn3
        !          1600:     \else\ifx\first4\adn4 \else\ifx\first5\adn5 \else\ifx\first6\adn6
        !          1601:     \else\ifx\first7\adn7 \else\ifx\first8\adn8 \else\ifx\first9\adn9
        !          1602:     \else
        !          1603:       \ifnum0=\countA\else\makelink\fi
        !          1604:       \ifx\first.\let\next=\done\else
        !          1605:         \let\next=\maketoks
        !          1606:         \addtokens{\toksB}{\the\toksD}
        !          1607:         \ifx\first,\addtokens{\toksB}{\space}\fi
        !          1608:       \fi
        !          1609:     \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
        !          1610:     \next}
        !          1611:   \def\makelink{\addtokens{\toksB}%
        !          1612:     {\noexpand\pdflink{\the\toksC}}\toksC={}\global\countA=0}
        !          1613:   \def\pdflink#1{%
        !          1614:     \startlink attr{/Border [0 0 0]} goto name{\pdfmkpgn{#1}}
        !          1615:     \setcolor{\linkcolor}#1\endlink}
        !          1616:   \def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st}
        !          1617: \else
        !          1618:   % non-pdf mode
        !          1619:   \let\pdfmkdest = \gobble
        !          1620:   \let\pdfurl = \gobble
        !          1621:   \let\endlink = \relax
        !          1622:   \let\setcolor = \gobble
        !          1623:   \let\pdfsetcolor = \gobble
        !          1624:   \let\pdfmakeoutlines = \relax
        !          1625: \fi  % \ifx\pdfoutput
        !          1626: 
        !          1627: 
        !          1628: \message{fonts,}
        !          1629: 
        !          1630: % Change the current font style to #1, remembering it in \curfontstyle.
        !          1631: % For now, we do not accumulate font styles: @b{@i{foo}} prints foo in
        !          1632: % italics, not bold italics.
        !          1633: %
        !          1634: \def\setfontstyle#1{%
        !          1635:   \def\curfontstyle{#1}% not as a control sequence, because we are \edef'd.
        !          1636:   \csname ten#1\endcsname  % change the current font
        !          1637: }
        !          1638: 
        !          1639: % Select #1 fonts with the current style.
        !          1640: %
        !          1641: \def\selectfonts#1{\csname #1fonts\endcsname \csname\curfontstyle\endcsname}
        !          1642: 
        !          1643: \def\rm{\fam=0 \setfontstyle{rm}}
        !          1644: \def\it{\fam=\itfam \setfontstyle{it}}
        !          1645: \def\sl{\fam=\slfam \setfontstyle{sl}}
        !          1646: \def\bf{\fam=\bffam \setfontstyle{bf}}\def\bfstylename{bf}
        !          1647: \def\tt{\fam=\ttfam \setfontstyle{tt}}
        !          1648: 
        !          1649: % Unfortunately, we have to override this for titles and the like, since
        !          1650: % in those cases "rm" is bold.  Sigh.
        !          1651: \def\rmisbold{\rm\def\curfontstyle{bf}}
        !          1652: 
        !          1653: % Texinfo sort of supports the sans serif font style, which plain TeX does not.
        !          1654: % So we set up a \sf.
        !          1655: \newfam\sffam
        !          1656: \def\sf{\fam=\sffam \setfontstyle{sf}}
        !          1657: \let\li = \sf % Sometimes we call it \li, not \sf.
        !          1658: 
        !          1659: % We don't need math for this font style.
        !          1660: \def\ttsl{\setfontstyle{ttsl}}
        !          1661: 
        !          1662: 
        !          1663: % Default leading.
        !          1664: \newdimen\textleading  \textleading = 13.2pt
        !          1665: 
        !          1666: % Set the baselineskip to #1, and the lineskip and strut size
        !          1667: % correspondingly.  There is no deep meaning behind these magic numbers
        !          1668: % used as factors; they just match (closely enough) what Knuth defined.
        !          1669: %
        !          1670: \def\lineskipfactor{.08333}
        !          1671: \def\strutheightpercent{.70833}
        !          1672: \def\strutdepthpercent {.29167}
        !          1673: %
        !          1674: % can get a sort of poor man's double spacing by redefining this.
        !          1675: \def\baselinefactor{1}
        !          1676: %
        !          1677: \def\setleading#1{%
        !          1678:   \dimen0 = #1\relax
        !          1679:   \normalbaselineskip = \baselinefactor\dimen0
        !          1680:   \normallineskip = \lineskipfactor\normalbaselineskip
        !          1681:   \normalbaselines
        !          1682:   \setbox\strutbox =\hbox{%
        !          1683:     \vrule width0pt height\strutheightpercent\baselineskip
        !          1684:                     depth \strutdepthpercent \baselineskip
        !          1685:   }%
        !          1686: }
        !          1687: 
        !          1688: % PDF CMaps.  See also LaTeX's t1.cmap.
        !          1689: %
        !          1690: % do nothing with this by default.
        !          1691: \expandafter\let\csname cmapOT1\endcsname\gobble
        !          1692: \expandafter\let\csname cmapOT1IT\endcsname\gobble
        !          1693: \expandafter\let\csname cmapOT1TT\endcsname\gobble
        !          1694: 
        !          1695: % if we are producing pdf, and we have \pdffontattr, then define cmaps.
        !          1696: % (\pdffontattr was introduced many years ago, but people still run
        !          1697: % older pdftex's; it's easy to conditionalize, so we do.)
        !          1698: \ifpdf \ifx\pdffontattr\undefined \else
        !          1699:   \begingroup
        !          1700:     \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
        !          1701:     \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
        !          1702: %%DocumentNeededResources: ProcSet (CIDInit)
        !          1703: %%IncludeResource: ProcSet (CIDInit)
        !          1704: %%BeginResource: CMap (TeX-OT1-0)
        !          1705: %%Title: (TeX-OT1-0 TeX OT1 0)
        !          1706: %%Version: 1.000
        !          1707: %%EndComments
        !          1708: /CIDInit /ProcSet findresource begin
        !          1709: 12 dict begin
        !          1710: begincmap
        !          1711: /CIDSystemInfo
        !          1712: << /Registry (TeX)
        !          1713: /Ordering (OT1)
        !          1714: /Supplement 0
        !          1715: >> def
        !          1716: /CMapName /TeX-OT1-0 def
        !          1717: /CMapType 2 def
        !          1718: 1 begincodespacerange
        !          1719: <00> <7F>
        !          1720: endcodespacerange
        !          1721: 8 beginbfrange
        !          1722: <00> <01> <0393>
        !          1723: <09> <0A> <03A8>
        !          1724: <23> <26> <0023>
        !          1725: <28> <3B> <0028>
        !          1726: <3F> <5B> <003F>
        !          1727: <5D> <5E> <005D>
        !          1728: <61> <7A> <0061>
        !          1729: <7B> <7C> <2013>
        !          1730: endbfrange
        !          1731: 40 beginbfchar
        !          1732: <02> <0398>
        !          1733: <03> <039B>
        !          1734: <04> <039E>
        !          1735: <05> <03A0>
        !          1736: <06> <03A3>
        !          1737: <07> <03D2>
        !          1738: <08> <03A6>
        !          1739: <0B> <00660066>
        !          1740: <0C> <00660069>
        !          1741: <0D> <0066006C>
        !          1742: <0E> <006600660069>
        !          1743: <0F> <00660066006C>
        !          1744: <10> <0131>
        !          1745: <11> <0237>
        !          1746: <12> <0060>
        !          1747: <13> <00B4>
        !          1748: <14> <02C7>
        !          1749: <15> <02D8>
        !          1750: <16> <00AF>
        !          1751: <17> <02DA>
        !          1752: <18> <00B8>
        !          1753: <19> <00DF>
        !          1754: <1A> <00E6>
        !          1755: <1B> <0153>
        !          1756: <1C> <00F8>
        !          1757: <1D> <00C6>
        !          1758: <1E> <0152>
        !          1759: <1F> <00D8>
        !          1760: <21> <0021>
        !          1761: <22> <201D>
        !          1762: <27> <2019>
        !          1763: <3C> <00A1>
        !          1764: <3D> <003D>
        !          1765: <3E> <00BF>
        !          1766: <5C> <201C>
        !          1767: <5F> <02D9>
        !          1768: <60> <2018>
        !          1769: <7D> <02DD>
        !          1770: <7E> <007E>
        !          1771: <7F> <00A8>
        !          1772: endbfchar
        !          1773: endcmap
        !          1774: CMapName currentdict /CMap defineresource pop
        !          1775: end
        !          1776: end
        !          1777: %%EndResource
        !          1778: %%EOF
        !          1779:     }\endgroup
        !          1780:   \expandafter\edef\csname cmapOT1\endcsname#1{%
        !          1781:     \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
        !          1782:   }%
        !          1783: %
        !          1784: % \cmapOT1IT
        !          1785:   \begingroup
        !          1786:     \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
        !          1787:     \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
        !          1788: %%DocumentNeededResources: ProcSet (CIDInit)
        !          1789: %%IncludeResource: ProcSet (CIDInit)
        !          1790: %%BeginResource: CMap (TeX-OT1IT-0)
        !          1791: %%Title: (TeX-OT1IT-0 TeX OT1IT 0)
        !          1792: %%Version: 1.000
        !          1793: %%EndComments
        !          1794: /CIDInit /ProcSet findresource begin
        !          1795: 12 dict begin
        !          1796: begincmap
        !          1797: /CIDSystemInfo
        !          1798: << /Registry (TeX)
        !          1799: /Ordering (OT1IT)
        !          1800: /Supplement 0
        !          1801: >> def
        !          1802: /CMapName /TeX-OT1IT-0 def
        !          1803: /CMapType 2 def
        !          1804: 1 begincodespacerange
        !          1805: <00> <7F>
        !          1806: endcodespacerange
        !          1807: 8 beginbfrange
        !          1808: <00> <01> <0393>
        !          1809: <09> <0A> <03A8>
        !          1810: <25> <26> <0025>
        !          1811: <28> <3B> <0028>
        !          1812: <3F> <5B> <003F>
        !          1813: <5D> <5E> <005D>
        !          1814: <61> <7A> <0061>
        !          1815: <7B> <7C> <2013>
        !          1816: endbfrange
        !          1817: 42 beginbfchar
        !          1818: <02> <0398>
        !          1819: <03> <039B>
        !          1820: <04> <039E>
        !          1821: <05> <03A0>
        !          1822: <06> <03A3>
        !          1823: <07> <03D2>
        !          1824: <08> <03A6>
        !          1825: <0B> <00660066>
        !          1826: <0C> <00660069>
        !          1827: <0D> <0066006C>
        !          1828: <0E> <006600660069>
        !          1829: <0F> <00660066006C>
        !          1830: <10> <0131>
        !          1831: <11> <0237>
        !          1832: <12> <0060>
        !          1833: <13> <00B4>
        !          1834: <14> <02C7>
        !          1835: <15> <02D8>
        !          1836: <16> <00AF>
        !          1837: <17> <02DA>
        !          1838: <18> <00B8>
        !          1839: <19> <00DF>
        !          1840: <1A> <00E6>
        !          1841: <1B> <0153>
        !          1842: <1C> <00F8>
        !          1843: <1D> <00C6>
        !          1844: <1E> <0152>
        !          1845: <1F> <00D8>
        !          1846: <21> <0021>
        !          1847: <22> <201D>
        !          1848: <23> <0023>
        !          1849: <24> <00A3>
        !          1850: <27> <2019>
        !          1851: <3C> <00A1>
        !          1852: <3D> <003D>
        !          1853: <3E> <00BF>
        !          1854: <5C> <201C>
        !          1855: <5F> <02D9>
        !          1856: <60> <2018>
        !          1857: <7D> <02DD>
        !          1858: <7E> <007E>
        !          1859: <7F> <00A8>
        !          1860: endbfchar
        !          1861: endcmap
        !          1862: CMapName currentdict /CMap defineresource pop
        !          1863: end
        !          1864: end
        !          1865: %%EndResource
        !          1866: %%EOF
        !          1867:     }\endgroup
        !          1868:   \expandafter\edef\csname cmapOT1IT\endcsname#1{%
        !          1869:     \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
        !          1870:   }%
        !          1871: %
        !          1872: % \cmapOT1TT
        !          1873:   \begingroup
        !          1874:     \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
        !          1875:     \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
        !          1876: %%DocumentNeededResources: ProcSet (CIDInit)
        !          1877: %%IncludeResource: ProcSet (CIDInit)
        !          1878: %%BeginResource: CMap (TeX-OT1TT-0)
        !          1879: %%Title: (TeX-OT1TT-0 TeX OT1TT 0)
        !          1880: %%Version: 1.000
        !          1881: %%EndComments
        !          1882: /CIDInit /ProcSet findresource begin
        !          1883: 12 dict begin
        !          1884: begincmap
        !          1885: /CIDSystemInfo
        !          1886: << /Registry (TeX)
        !          1887: /Ordering (OT1TT)
        !          1888: /Supplement 0
        !          1889: >> def
        !          1890: /CMapName /TeX-OT1TT-0 def
        !          1891: /CMapType 2 def
        !          1892: 1 begincodespacerange
        !          1893: <00> <7F>
        !          1894: endcodespacerange
        !          1895: 5 beginbfrange
        !          1896: <00> <01> <0393>
        !          1897: <09> <0A> <03A8>
        !          1898: <21> <26> <0021>
        !          1899: <28> <5F> <0028>
        !          1900: <61> <7E> <0061>
        !          1901: endbfrange
        !          1902: 32 beginbfchar
        !          1903: <02> <0398>
        !          1904: <03> <039B>
        !          1905: <04> <039E>
        !          1906: <05> <03A0>
        !          1907: <06> <03A3>
        !          1908: <07> <03D2>
        !          1909: <08> <03A6>
        !          1910: <0B> <2191>
        !          1911: <0C> <2193>
        !          1912: <0D> <0027>
        !          1913: <0E> <00A1>
        !          1914: <0F> <00BF>
        !          1915: <10> <0131>
        !          1916: <11> <0237>
        !          1917: <12> <0060>
        !          1918: <13> <00B4>
        !          1919: <14> <02C7>
        !          1920: <15> <02D8>
        !          1921: <16> <00AF>
        !          1922: <17> <02DA>
        !          1923: <18> <00B8>
        !          1924: <19> <00DF>
        !          1925: <1A> <00E6>
        !          1926: <1B> <0153>
        !          1927: <1C> <00F8>
        !          1928: <1D> <00C6>
        !          1929: <1E> <0152>
        !          1930: <1F> <00D8>
        !          1931: <20> <2423>
        !          1932: <27> <2019>
        !          1933: <60> <2018>
        !          1934: <7F> <00A8>
        !          1935: endbfchar
        !          1936: endcmap
        !          1937: CMapName currentdict /CMap defineresource pop
        !          1938: end
        !          1939: end
        !          1940: %%EndResource
        !          1941: %%EOF
        !          1942:     }\endgroup
        !          1943:   \expandafter\edef\csname cmapOT1TT\endcsname#1{%
        !          1944:     \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
        !          1945:   }%
        !          1946: \fi\fi
        !          1947: 
        !          1948: 
        !          1949: % Set the font macro #1 to the font named #2, adding on the
        !          1950: % specified font prefix (normally `cm').
        !          1951: % #3 is the font's design size, #4 is a scale factor, #5 is the CMap
        !          1952: % encoding (currently only OT1, OT1IT and OT1TT are allowed, pass
        !          1953: % empty to omit).
        !          1954: \def\setfont#1#2#3#4#5{%
        !          1955:   \font#1=\fontprefix#2#3 scaled #4
        !          1956:   \csname cmap#5\endcsname#1%
        !          1957: }
        !          1958: % This is what gets called when #5 of \setfont is empty.
        !          1959: \let\cmap\gobble
        !          1960: % emacs-page end of cmaps
        !          1961: 
        !          1962: % Use cm as the default font prefix.
        !          1963: % To specify the font prefix, you must define \fontprefix
        !          1964: % before you read in texinfo.tex.
        !          1965: \ifx\fontprefix\undefined
        !          1966: \def\fontprefix{cm}
        !          1967: \fi
        !          1968: % Support font families that don't use the same naming scheme as CM.
        !          1969: \def\rmshape{r}
        !          1970: \def\rmbshape{bx}               %where the normal face is bold
        !          1971: \def\bfshape{b}
        !          1972: \def\bxshape{bx}
        !          1973: \def\ttshape{tt}
        !          1974: \def\ttbshape{tt}
        !          1975: \def\ttslshape{sltt}
        !          1976: \def\itshape{ti}
        !          1977: \def\itbshape{bxti}
        !          1978: \def\slshape{sl}
        !          1979: \def\slbshape{bxsl}
        !          1980: \def\sfshape{ss}
        !          1981: \def\sfbshape{ss}
        !          1982: \def\scshape{csc}
        !          1983: \def\scbshape{csc}
        !          1984: 
        !          1985: % Definitions for a main text size of 11pt.  This is the default in
        !          1986: % Texinfo.
        !          1987: %
        !          1988: \def\definetextfontsizexi{%
        !          1989: % Text fonts (11.2pt, magstep1).
        !          1990: \def\textnominalsize{11pt}
        !          1991: \edef\mainmagstep{\magstephalf}
        !          1992: \setfont\textrm\rmshape{10}{\mainmagstep}{OT1}
        !          1993: \setfont\texttt\ttshape{10}{\mainmagstep}{OT1TT}
        !          1994: \setfont\textbf\bfshape{10}{\mainmagstep}{OT1}
        !          1995: \setfont\textit\itshape{10}{\mainmagstep}{OT1IT}
        !          1996: \setfont\textsl\slshape{10}{\mainmagstep}{OT1}
        !          1997: \setfont\textsf\sfshape{10}{\mainmagstep}{OT1}
        !          1998: \setfont\textsc\scshape{10}{\mainmagstep}{OT1}
        !          1999: \setfont\textttsl\ttslshape{10}{\mainmagstep}{OT1TT}
        !          2000: \font\texti=cmmi10 scaled \mainmagstep
        !          2001: \font\textsy=cmsy10 scaled \mainmagstep
        !          2002: \def\textecsize{1095}
        !          2003: 
        !          2004: % A few fonts for @defun names and args.
        !          2005: \setfont\defbf\bfshape{10}{\magstep1}{OT1}
        !          2006: \setfont\deftt\ttshape{10}{\magstep1}{OT1TT}
        !          2007: \setfont\defttsl\ttslshape{10}{\magstep1}{OT1TT}
        !          2008: \def\df{\let\tentt=\deftt \let\tenbf = \defbf \let\tenttsl=\defttsl \bf}
        !          2009: 
        !          2010: % Fonts for indices, footnotes, small examples (9pt).
        !          2011: \def\smallnominalsize{9pt}
        !          2012: \setfont\smallrm\rmshape{9}{1000}{OT1}
        !          2013: \setfont\smalltt\ttshape{9}{1000}{OT1TT}
        !          2014: \setfont\smallbf\bfshape{10}{900}{OT1}
        !          2015: \setfont\smallit\itshape{9}{1000}{OT1IT}
        !          2016: \setfont\smallsl\slshape{9}{1000}{OT1}
        !          2017: \setfont\smallsf\sfshape{9}{1000}{OT1}
        !          2018: \setfont\smallsc\scshape{10}{900}{OT1}
        !          2019: \setfont\smallttsl\ttslshape{10}{900}{OT1TT}
        !          2020: \font\smalli=cmmi9
        !          2021: \font\smallsy=cmsy9
        !          2022: \def\smallecsize{0900}
        !          2023: 
        !          2024: % Fonts for small examples (8pt).
        !          2025: \def\smallernominalsize{8pt}
        !          2026: \setfont\smallerrm\rmshape{8}{1000}{OT1}
        !          2027: \setfont\smallertt\ttshape{8}{1000}{OT1TT}
        !          2028: \setfont\smallerbf\bfshape{10}{800}{OT1}
        !          2029: \setfont\smallerit\itshape{8}{1000}{OT1IT}
        !          2030: \setfont\smallersl\slshape{8}{1000}{OT1}
        !          2031: \setfont\smallersf\sfshape{8}{1000}{OT1}
        !          2032: \setfont\smallersc\scshape{10}{800}{OT1}
        !          2033: \setfont\smallerttsl\ttslshape{10}{800}{OT1TT}
        !          2034: \font\smalleri=cmmi8
        !          2035: \font\smallersy=cmsy8
        !          2036: \def\smallerecsize{0800}
        !          2037: 
        !          2038: % Fonts for title page (20.4pt):
        !          2039: \def\titlenominalsize{20pt}
        !          2040: \setfont\titlerm\rmbshape{12}{\magstep3}{OT1}
        !          2041: \setfont\titleit\itbshape{10}{\magstep4}{OT1IT}
        !          2042: \setfont\titlesl\slbshape{10}{\magstep4}{OT1}
        !          2043: \setfont\titlett\ttbshape{12}{\magstep3}{OT1TT}
        !          2044: \setfont\titlettsl\ttslshape{10}{\magstep4}{OT1TT}
        !          2045: \setfont\titlesf\sfbshape{17}{\magstep1}{OT1}
        !          2046: \let\titlebf=\titlerm
        !          2047: \setfont\titlesc\scbshape{10}{\magstep4}{OT1}
        !          2048: \font\titlei=cmmi12 scaled \magstep3
        !          2049: \font\titlesy=cmsy10 scaled \magstep4
        !          2050: \def\titleecsize{2074}
        !          2051: 
        !          2052: % Chapter (and unnumbered) fonts (17.28pt).
        !          2053: \def\chapnominalsize{17pt}
        !          2054: \setfont\chaprm\rmbshape{12}{\magstep2}{OT1}
        !          2055: \setfont\chapit\itbshape{10}{\magstep3}{OT1IT}
        !          2056: \setfont\chapsl\slbshape{10}{\magstep3}{OT1}
        !          2057: \setfont\chaptt\ttbshape{12}{\magstep2}{OT1TT}
        !          2058: \setfont\chapttsl\ttslshape{10}{\magstep3}{OT1TT}
        !          2059: \setfont\chapsf\sfbshape{17}{1000}{OT1}
        !          2060: \let\chapbf=\chaprm
        !          2061: \setfont\chapsc\scbshape{10}{\magstep3}{OT1}
        !          2062: \font\chapi=cmmi12 scaled \magstep2
        !          2063: \font\chapsy=cmsy10 scaled \magstep3
        !          2064: \def\chapecsize{1728}
        !          2065: 
        !          2066: % Section fonts (14.4pt).
        !          2067: \def\secnominalsize{14pt}
        !          2068: \setfont\secrm\rmbshape{12}{\magstep1}{OT1}
        !          2069: \setfont\secit\itbshape{10}{\magstep2}{OT1IT}
        !          2070: \setfont\secsl\slbshape{10}{\magstep2}{OT1}
        !          2071: \setfont\sectt\ttbshape{12}{\magstep1}{OT1TT}
        !          2072: \setfont\secttsl\ttslshape{10}{\magstep2}{OT1TT}
        !          2073: \setfont\secsf\sfbshape{12}{\magstep1}{OT1}
        !          2074: \let\secbf\secrm
        !          2075: \setfont\secsc\scbshape{10}{\magstep2}{OT1}
        !          2076: \font\seci=cmmi12 scaled \magstep1
        !          2077: \font\secsy=cmsy10 scaled \magstep2
        !          2078: \def\sececsize{1440}
        !          2079: 
        !          2080: % Subsection fonts (13.15pt).
        !          2081: \def\ssecnominalsize{13pt}
        !          2082: \setfont\ssecrm\rmbshape{12}{\magstephalf}{OT1}
        !          2083: \setfont\ssecit\itbshape{10}{1315}{OT1IT}
        !          2084: \setfont\ssecsl\slbshape{10}{1315}{OT1}
        !          2085: \setfont\ssectt\ttbshape{12}{\magstephalf}{OT1TT}
        !          2086: \setfont\ssecttsl\ttslshape{10}{1315}{OT1TT}
        !          2087: \setfont\ssecsf\sfbshape{12}{\magstephalf}{OT1}
        !          2088: \let\ssecbf\ssecrm
        !          2089: \setfont\ssecsc\scbshape{10}{1315}{OT1}
        !          2090: \font\sseci=cmmi12 scaled \magstephalf
        !          2091: \font\ssecsy=cmsy10 scaled 1315
        !          2092: \def\ssececsize{1200}
        !          2093: 
        !          2094: % Reduced fonts for @acro in text (10pt).
        !          2095: \def\reducednominalsize{10pt}
        !          2096: \setfont\reducedrm\rmshape{10}{1000}{OT1}
        !          2097: \setfont\reducedtt\ttshape{10}{1000}{OT1TT}
        !          2098: \setfont\reducedbf\bfshape{10}{1000}{OT1}
        !          2099: \setfont\reducedit\itshape{10}{1000}{OT1IT}
        !          2100: \setfont\reducedsl\slshape{10}{1000}{OT1}
        !          2101: \setfont\reducedsf\sfshape{10}{1000}{OT1}
        !          2102: \setfont\reducedsc\scshape{10}{1000}{OT1}
        !          2103: \setfont\reducedttsl\ttslshape{10}{1000}{OT1TT}
        !          2104: \font\reducedi=cmmi10
        !          2105: \font\reducedsy=cmsy10
        !          2106: \def\reducedecsize{1000}
        !          2107: 
        !          2108: % reset the current fonts
        !          2109: \textfonts
        !          2110: \rm
        !          2111: } % end of 11pt text font size definitions
        !          2112: 
        !          2113: 
        !          2114: % Definitions to make the main text be 10pt Computer Modern, with
        !          2115: % section, chapter, etc., sizes following suit.  This is for the GNU
        !          2116: % Press printing of the Emacs 22 manual.  Maybe other manuals in the
        !          2117: % future.  Used with @smallbook, which sets the leading to 12pt.
        !          2118: %
        !          2119: \def\definetextfontsizex{%
        !          2120: % Text fonts (10pt).
        !          2121: \def\textnominalsize{10pt}
        !          2122: \edef\mainmagstep{1000}
        !          2123: \setfont\textrm\rmshape{10}{\mainmagstep}{OT1}
        !          2124: \setfont\texttt\ttshape{10}{\mainmagstep}{OT1TT}
        !          2125: \setfont\textbf\bfshape{10}{\mainmagstep}{OT1}
        !          2126: \setfont\textit\itshape{10}{\mainmagstep}{OT1IT}
        !          2127: \setfont\textsl\slshape{10}{\mainmagstep}{OT1}
        !          2128: \setfont\textsf\sfshape{10}{\mainmagstep}{OT1}
        !          2129: \setfont\textsc\scshape{10}{\mainmagstep}{OT1}
        !          2130: \setfont\textttsl\ttslshape{10}{\mainmagstep}{OT1TT}
        !          2131: \font\texti=cmmi10 scaled \mainmagstep
        !          2132: \font\textsy=cmsy10 scaled \mainmagstep
        !          2133: \def\textecsize{1000}
        !          2134: 
        !          2135: % A few fonts for @defun names and args.
        !          2136: \setfont\defbf\bfshape{10}{\magstephalf}{OT1}
        !          2137: \setfont\deftt\ttshape{10}{\magstephalf}{OT1TT}
        !          2138: \setfont\defttsl\ttslshape{10}{\magstephalf}{OT1TT}
        !          2139: \def\df{\let\tentt=\deftt \let\tenbf = \defbf \let\tenttsl=\defttsl \bf}
        !          2140: 
        !          2141: % Fonts for indices, footnotes, small examples (9pt).
        !          2142: \def\smallnominalsize{9pt}
        !          2143: \setfont\smallrm\rmshape{9}{1000}{OT1}
        !          2144: \setfont\smalltt\ttshape{9}{1000}{OT1TT}
        !          2145: \setfont\smallbf\bfshape{10}{900}{OT1}
        !          2146: \setfont\smallit\itshape{9}{1000}{OT1IT}
        !          2147: \setfont\smallsl\slshape{9}{1000}{OT1}
        !          2148: \setfont\smallsf\sfshape{9}{1000}{OT1}
        !          2149: \setfont\smallsc\scshape{10}{900}{OT1}
        !          2150: \setfont\smallttsl\ttslshape{10}{900}{OT1TT}
        !          2151: \font\smalli=cmmi9
        !          2152: \font\smallsy=cmsy9
        !          2153: \def\smallecsize{0900}
        !          2154: 
        !          2155: % Fonts for small examples (8pt).
        !          2156: \def\smallernominalsize{8pt}
        !          2157: \setfont\smallerrm\rmshape{8}{1000}{OT1}
        !          2158: \setfont\smallertt\ttshape{8}{1000}{OT1TT}
        !          2159: \setfont\smallerbf\bfshape{10}{800}{OT1}
        !          2160: \setfont\smallerit\itshape{8}{1000}{OT1IT}
        !          2161: \setfont\smallersl\slshape{8}{1000}{OT1}
        !          2162: \setfont\smallersf\sfshape{8}{1000}{OT1}
        !          2163: \setfont\smallersc\scshape{10}{800}{OT1}
        !          2164: \setfont\smallerttsl\ttslshape{10}{800}{OT1TT}
        !          2165: \font\smalleri=cmmi8
        !          2166: \font\smallersy=cmsy8
        !          2167: \def\smallerecsize{0800}
        !          2168: 
        !          2169: % Fonts for title page (20.4pt):
        !          2170: \def\titlenominalsize{20pt}
        !          2171: \setfont\titlerm\rmbshape{12}{\magstep3}{OT1}
        !          2172: \setfont\titleit\itbshape{10}{\magstep4}{OT1IT}
        !          2173: \setfont\titlesl\slbshape{10}{\magstep4}{OT1}
        !          2174: \setfont\titlett\ttbshape{12}{\magstep3}{OT1TT}
        !          2175: \setfont\titlettsl\ttslshape{10}{\magstep4}{OT1TT}
        !          2176: \setfont\titlesf\sfbshape{17}{\magstep1}{OT1}
        !          2177: \let\titlebf=\titlerm
        !          2178: \setfont\titlesc\scbshape{10}{\magstep4}{OT1}
        !          2179: \font\titlei=cmmi12 scaled \magstep3
        !          2180: \font\titlesy=cmsy10 scaled \magstep4
        !          2181: \def\titleecsize{2074}
        !          2182: 
        !          2183: % Chapter fonts (14.4pt).
        !          2184: \def\chapnominalsize{14pt}
        !          2185: \setfont\chaprm\rmbshape{12}{\magstep1}{OT1}
        !          2186: \setfont\chapit\itbshape{10}{\magstep2}{OT1IT}
        !          2187: \setfont\chapsl\slbshape{10}{\magstep2}{OT1}
        !          2188: \setfont\chaptt\ttbshape{12}{\magstep1}{OT1TT}
        !          2189: \setfont\chapttsl\ttslshape{10}{\magstep2}{OT1TT}
        !          2190: \setfont\chapsf\sfbshape{12}{\magstep1}{OT1}
        !          2191: \let\chapbf\chaprm
        !          2192: \setfont\chapsc\scbshape{10}{\magstep2}{OT1}
        !          2193: \font\chapi=cmmi12 scaled \magstep1
        !          2194: \font\chapsy=cmsy10 scaled \magstep2
        !          2195: \def\chapecsize{1440}
        !          2196: 
        !          2197: % Section fonts (12pt).
        !          2198: \def\secnominalsize{12pt}
        !          2199: \setfont\secrm\rmbshape{12}{1000}{OT1}
        !          2200: \setfont\secit\itbshape{10}{\magstep1}{OT1IT}
        !          2201: \setfont\secsl\slbshape{10}{\magstep1}{OT1}
        !          2202: \setfont\sectt\ttbshape{12}{1000}{OT1TT}
        !          2203: \setfont\secttsl\ttslshape{10}{\magstep1}{OT1TT}
        !          2204: \setfont\secsf\sfbshape{12}{1000}{OT1}
        !          2205: \let\secbf\secrm
        !          2206: \setfont\secsc\scbshape{10}{\magstep1}{OT1}
        !          2207: \font\seci=cmmi12
        !          2208: \font\secsy=cmsy10 scaled \magstep1
        !          2209: \def\sececsize{1200}
        !          2210: 
        !          2211: % Subsection fonts (10pt).
        !          2212: \def\ssecnominalsize{10pt}
        !          2213: \setfont\ssecrm\rmbshape{10}{1000}{OT1}
        !          2214: \setfont\ssecit\itbshape{10}{1000}{OT1IT}
        !          2215: \setfont\ssecsl\slbshape{10}{1000}{OT1}
        !          2216: \setfont\ssectt\ttbshape{10}{1000}{OT1TT}
        !          2217: \setfont\ssecttsl\ttslshape{10}{1000}{OT1TT}
        !          2218: \setfont\ssecsf\sfbshape{10}{1000}{OT1}
        !          2219: \let\ssecbf\ssecrm
        !          2220: \setfont\ssecsc\scbshape{10}{1000}{OT1}
        !          2221: \font\sseci=cmmi10
        !          2222: \font\ssecsy=cmsy10
        !          2223: \def\ssececsize{1000}
        !          2224: 
        !          2225: % Reduced fonts for @acro in text (9pt).
        !          2226: \def\reducednominalsize{9pt}
        !          2227: \setfont\reducedrm\rmshape{9}{1000}{OT1}
        !          2228: \setfont\reducedtt\ttshape{9}{1000}{OT1TT}
        !          2229: \setfont\reducedbf\bfshape{10}{900}{OT1}
        !          2230: \setfont\reducedit\itshape{9}{1000}{OT1IT}
        !          2231: \setfont\reducedsl\slshape{9}{1000}{OT1}
        !          2232: \setfont\reducedsf\sfshape{9}{1000}{OT1}
        !          2233: \setfont\reducedsc\scshape{10}{900}{OT1}
        !          2234: \setfont\reducedttsl\ttslshape{10}{900}{OT1TT}
        !          2235: \font\reducedi=cmmi9
        !          2236: \font\reducedsy=cmsy9
        !          2237: \def\reducedecsize{0900}
        !          2238: 
        !          2239: % reduce space between paragraphs
        !          2240: \divide\parskip by 2
        !          2241: 
        !          2242: % reset the current fonts
        !          2243: \textfonts
        !          2244: \rm
        !          2245: } % end of 10pt text font size definitions
        !          2246: 
        !          2247: 
        !          2248: % We provide the user-level command
        !          2249: %   @fonttextsize 10
        !          2250: % (or 11) to redefine the text font size.  pt is assumed.
        !          2251: %
        !          2252: \def\xword{10}
        !          2253: \def\xiword{11}
        !          2254: %
        !          2255: \parseargdef\fonttextsize{%
        !          2256:   \def\textsizearg{#1}%
        !          2257:   \wlog{doing @fonttextsize \textsizearg}%
        !          2258:   %
        !          2259:   % Set \globaldefs so that documents can use this inside @tex, since
        !          2260:   % makeinfo 4.8 does not support it, but we need it nonetheless.
        !          2261:   %
        !          2262:  \begingroup \globaldefs=1
        !          2263:   \ifx\textsizearg\xword \definetextfontsizex
        !          2264:   \else \ifx\textsizearg\xiword \definetextfontsizexi
        !          2265:   \else
        !          2266:     \errhelp=\EMsimple
        !          2267:     \errmessage{@fonttextsize only supports `10' or `11', not `\textsizearg'}
        !          2268:   \fi\fi
        !          2269:  \endgroup
        !          2270: }
        !          2271: 
        !          2272: 
        !          2273: % In order for the font changes to affect most math symbols and letters,
        !          2274: % we have to define the \textfont of the standard families.  Since
        !          2275: % texinfo doesn't allow for producing subscripts and superscripts except
        !          2276: % in the main text, we don't bother to reset \scriptfont and
        !          2277: % \scriptscriptfont (which would also require loading a lot more fonts).
        !          2278: %
        !          2279: \def\resetmathfonts{%
        !          2280:   \textfont0=\tenrm \textfont1=\teni \textfont2=\tensy
        !          2281:   \textfont\itfam=\tenit \textfont\slfam=\tensl \textfont\bffam=\tenbf
        !          2282:   \textfont\ttfam=\tentt \textfont\sffam=\tensf
        !          2283: }
        !          2284: 
        !          2285: % The font-changing commands redefine the meanings of \tenSTYLE, instead
        !          2286: % of just \STYLE.  We do this because \STYLE needs to also set the
        !          2287: % current \fam for math mode.  Our \STYLE (e.g., \rm) commands hardwire
        !          2288: % \tenSTYLE to set the current font.
        !          2289: %
        !          2290: % Each font-changing command also sets the names \lsize (one size lower)
        !          2291: % and \lllsize (three sizes lower).  These relative commands are used in
        !          2292: % the LaTeX logo and acronyms.
        !          2293: %
        !          2294: % This all needs generalizing, badly.
        !          2295: %
        !          2296: \def\textfonts{%
        !          2297:   \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
        !          2298:   \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
        !          2299:   \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy
        !          2300:   \let\tenttsl=\textttsl
        !          2301:   \def\curfontsize{text}%
        !          2302:   \def\lsize{reduced}\def\lllsize{smaller}%
        !          2303:   \resetmathfonts \setleading{\textleading}}
        !          2304: \def\titlefonts{%
        !          2305:   \let\tenrm=\titlerm \let\tenit=\titleit \let\tensl=\titlesl
        !          2306:   \let\tenbf=\titlebf \let\tentt=\titlett \let\smallcaps=\titlesc
        !          2307:   \let\tensf=\titlesf \let\teni=\titlei \let\tensy=\titlesy
        !          2308:   \let\tenttsl=\titlettsl
        !          2309:   \def\curfontsize{title}%
        !          2310:   \def\lsize{chap}\def\lllsize{subsec}%
        !          2311:   \resetmathfonts \setleading{25pt}}
        !          2312: \def\titlefont#1{{\titlefonts\rmisbold #1}}
        !          2313: \def\chapfonts{%
        !          2314:   \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
        !          2315:   \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
        !          2316:   \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy
        !          2317:   \let\tenttsl=\chapttsl
        !          2318:   \def\curfontsize{chap}%
        !          2319:   \def\lsize{sec}\def\lllsize{text}%
        !          2320:   \resetmathfonts \setleading{19pt}}
        !          2321: \def\secfonts{%
        !          2322:   \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
        !          2323:   \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
        !          2324:   \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy
        !          2325:   \let\tenttsl=\secttsl
        !          2326:   \def\curfontsize{sec}%
        !          2327:   \def\lsize{subsec}\def\lllsize{reduced}%
        !          2328:   \resetmathfonts \setleading{16pt}}
        !          2329: \def\subsecfonts{%
        !          2330:   \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
        !          2331:   \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
        !          2332:   \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy
        !          2333:   \let\tenttsl=\ssecttsl
        !          2334:   \def\curfontsize{ssec}%
        !          2335:   \def\lsize{text}\def\lllsize{small}%
        !          2336:   \resetmathfonts \setleading{15pt}}
        !          2337: \let\subsubsecfonts = \subsecfonts
        !          2338: \def\reducedfonts{%
        !          2339:   \let\tenrm=\reducedrm \let\tenit=\reducedit \let\tensl=\reducedsl
        !          2340:   \let\tenbf=\reducedbf \let\tentt=\reducedtt \let\reducedcaps=\reducedsc
        !          2341:   \let\tensf=\reducedsf \let\teni=\reducedi \let\tensy=\reducedsy
        !          2342:   \let\tenttsl=\reducedttsl
        !          2343:   \def\curfontsize{reduced}%
        !          2344:   \def\lsize{small}\def\lllsize{smaller}%
        !          2345:   \resetmathfonts \setleading{10.5pt}}
        !          2346: \def\smallfonts{%
        !          2347:   \let\tenrm=\smallrm \let\tenit=\smallit \let\tensl=\smallsl
        !          2348:   \let\tenbf=\smallbf \let\tentt=\smalltt \let\smallcaps=\smallsc
        !          2349:   \let\tensf=\smallsf \let\teni=\smalli \let\tensy=\smallsy
        !          2350:   \let\tenttsl=\smallttsl
        !          2351:   \def\curfontsize{small}%
        !          2352:   \def\lsize{smaller}\def\lllsize{smaller}%
        !          2353:   \resetmathfonts \setleading{10.5pt}}
        !          2354: \def\smallerfonts{%
        !          2355:   \let\tenrm=\smallerrm \let\tenit=\smallerit \let\tensl=\smallersl
        !          2356:   \let\tenbf=\smallerbf \let\tentt=\smallertt \let\smallcaps=\smallersc
        !          2357:   \let\tensf=\smallersf \let\teni=\smalleri \let\tensy=\smallersy
        !          2358:   \let\tenttsl=\smallerttsl
        !          2359:   \def\curfontsize{smaller}%
        !          2360:   \def\lsize{smaller}\def\lllsize{smaller}%
        !          2361:   \resetmathfonts \setleading{9.5pt}}
        !          2362: 
        !          2363: % Fonts for short table of contents.
        !          2364: \setfont\shortcontrm\rmshape{12}{1000}{OT1}
        !          2365: \setfont\shortcontbf\bfshape{10}{\magstep1}{OT1}  % no cmb12
        !          2366: \setfont\shortcontsl\slshape{12}{1000}{OT1}
        !          2367: \setfont\shortconttt\ttshape{12}{1000}{OT1TT}
        !          2368: 
        !          2369: % Define these just so they can be easily changed for other fonts.
        !          2370: \def\angleleft{$\langle$}
        !          2371: \def\angleright{$\rangle$}
        !          2372: 
        !          2373: % Set the fonts to use with the @small... environments.
        !          2374: \let\smallexamplefonts = \smallfonts
        !          2375: 
        !          2376: % About \smallexamplefonts.  If we use \smallfonts (9pt), @smallexample
        !          2377: % can fit this many characters:
        !          2378: %   8.5x11=86   smallbook=72  a4=90  a5=69
        !          2379: % If we use \scriptfonts (8pt), then we can fit this many characters:
        !          2380: %   8.5x11=90+  smallbook=80  a4=90+  a5=77
        !          2381: % For me, subjectively, the few extra characters that fit aren't worth
        !          2382: % the additional smallness of 8pt.  So I'm making the default 9pt.
        !          2383: %
        !          2384: % By the way, for comparison, here's what fits with @example (10pt):
        !          2385: %   8.5x11=71  smallbook=60  a4=75  a5=58
        !          2386: % --karl, 24jan03.
        !          2387: 
        !          2388: % Set up the default fonts, so we can use them for creating boxes.
        !          2389: %
        !          2390: \definetextfontsizexi
        !          2391: 
        !          2392: 
        !          2393: \message{markup,}
        !          2394: 
        !          2395: % Check if we are currently using a typewriter font.  Since all the
        !          2396: % Computer Modern typewriter fonts have zero interword stretch (and
        !          2397: % shrink), and it is reasonable to expect all typewriter fonts to have
        !          2398: % this property, we can check that font parameter.
        !          2399: %
        !          2400: \def\ifmonospace{\ifdim\fontdimen3\font=0pt }
        !          2401: 
        !          2402: % Markup style infrastructure.  \defmarkupstylesetup\INITMACRO will
        !          2403: % define and register \INITMACRO to be called on markup style changes.
        !          2404: % \INITMACRO can check \currentmarkupstyle for the innermost
        !          2405: % style and the set of \ifmarkupSTYLE switches for all styles
        !          2406: % currently in effect.
        !          2407: \newif\ifmarkupvar
        !          2408: \newif\ifmarkupsamp
        !          2409: \newif\ifmarkupkey
        !          2410: %\newif\ifmarkupfile % @file == @samp.
        !          2411: %\newif\ifmarkupoption % @option == @samp.
        !          2412: \newif\ifmarkupcode
        !          2413: \newif\ifmarkupkbd
        !          2414: %\newif\ifmarkupenv % @env == @code.
        !          2415: %\newif\ifmarkupcommand % @command == @code.
        !          2416: \newif\ifmarkuptex % @tex (and part of @math, for now).
        !          2417: \newif\ifmarkupexample
        !          2418: \newif\ifmarkupverb
        !          2419: \newif\ifmarkupverbatim
        !          2420: 
        !          2421: \let\currentmarkupstyle\empty
        !          2422: 
        !          2423: \def\setupmarkupstyle#1{%
        !          2424:   \csname markup#1true\endcsname
        !          2425:   \def\currentmarkupstyle{#1}%
        !          2426:   \markupstylesetup
        !          2427: }
        !          2428: 
        !          2429: \let\markupstylesetup\empty
        !          2430: 
        !          2431: \def\defmarkupstylesetup#1{%
        !          2432:   \expandafter\def\expandafter\markupstylesetup
        !          2433:     \expandafter{\markupstylesetup #1}%
        !          2434:   \def#1%
        !          2435: }
        !          2436: 
        !          2437: % Markup style setup for left and right quotes.
        !          2438: \defmarkupstylesetup\markupsetuplq{%
        !          2439:   \expandafter\let\expandafter \temp \csname markupsetuplq\currentmarkupstyle\endcsname
        !          2440:   \ifx\temp\relax \markupsetuplqdefault \else \temp \fi
        !          2441: }
        !          2442: 
        !          2443: \defmarkupstylesetup\markupsetuprq{%
        !          2444:   \expandafter\let\expandafter \temp \csname markupsetuprq\currentmarkupstyle\endcsname
        !          2445:   \ifx\temp\relax \markupsetuprqdefault \else \temp \fi
        !          2446: }
        !          2447: 
        !          2448: {
        !          2449: \catcode`\'=\active
        !          2450: \catcode`\`=\active
        !          2451: 
        !          2452: \gdef\markupsetuplqdefault{\let`\lq}
        !          2453: \gdef\markupsetuprqdefault{\let'\rq}
        !          2454: 
        !          2455: \gdef\markupsetcodequoteleft{\let`\codequoteleft}
        !          2456: \gdef\markupsetcodequoteright{\let'\codequoteright}
        !          2457: 
        !          2458: \gdef\markupsetnoligaturesquoteleft{\let`\noligaturesquoteleft}
        !          2459: }
        !          2460: 
        !          2461: \let\markupsetuplqcode \markupsetcodequoteleft
        !          2462: \let\markupsetuprqcode \markupsetcodequoteright
        !          2463: \let\markupsetuplqexample \markupsetcodequoteleft
        !          2464: \let\markupsetuprqexample \markupsetcodequoteright
        !          2465: \let\markupsetuplqverb \markupsetcodequoteleft
        !          2466: \let\markupsetuprqverb \markupsetcodequoteright
        !          2467: \let\markupsetuplqverbatim \markupsetcodequoteleft
        !          2468: \let\markupsetuprqverbatim \markupsetcodequoteright
        !          2469: 
        !          2470: \let\markupsetuplqsamp \markupsetnoligaturesquoteleft
        !          2471: \let\markupsetuplqkbd \markupsetnoligaturesquoteleft
        !          2472: 
        !          2473: % Allow an option to not replace quotes with a regular directed right
        !          2474: % quote/apostrophe (char 0x27), but instead use the undirected quote
        !          2475: % from cmtt (char 0x0d).  The undirected quote is ugly, so don't make it
        !          2476: % the default, but it works for pasting with more pdf viewers (at least
        !          2477: % evince), the lilypond developers report.  xpdf does work with the
        !          2478: % regular 0x27.
        !          2479: %
        !          2480: \def\codequoteright{%
        !          2481:   \expandafter\ifx\csname SETtxicodequoteundirected\endcsname\relax
        !          2482:     \expandafter\ifx\csname SETcodequoteundirected\endcsname\relax
        !          2483:       '%
        !          2484:     \else \char'15 \fi
        !          2485:   \else \char'15 \fi
        !          2486: }
        !          2487: %
        !          2488: % and a similar option for the left quote char vs. a grave accent.
        !          2489: % Modern fonts display ASCII 0x60 as a grave accent, so some people like
        !          2490: % the code environments to do likewise.
        !          2491: %
        !          2492: \def\codequoteleft{%
        !          2493:   \expandafter\ifx\csname SETtxicodequotebacktick\endcsname\relax
        !          2494:     \expandafter\ifx\csname SETcodequotebacktick\endcsname\relax
        !          2495:       % [Knuth] pp. 380,381,391
        !          2496:       % \relax disables Spanish ligatures ?` and !` of \tt font.
        !          2497:       \relax`%
        !          2498:     \else \char'22 \fi
        !          2499:   \else \char'22 \fi
        !          2500: }
        !          2501: 
        !          2502: % [Knuth] pp. 380,381,391, disable Spanish ligatures ?` and !` of \tt font.
        !          2503: \def\noligaturesquoteleft{\relax\lq}
        !          2504: 
        !          2505: % Count depth in font-changes, for error checks
        !          2506: \newcount\fontdepth \fontdepth=0
        !          2507: 
        !          2508: %% Add scribe-like font environments, plus @l for inline lisp (usually sans
        !          2509: %% serif) and @ii for TeX italic
        !          2510: 
        !          2511: % \smartitalic{ARG} outputs arg in italics, followed by an italic correction
        !          2512: % unless the following character is such as not to need one.
        !          2513: \def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else
        !          2514:                     \ptexslash\fi\fi\fi}
        !          2515: \def\smartslanted#1{{\ifusingtt\ttsl\sl #1}\futurelet\next\smartitalicx}
        !          2516: \def\smartitalic#1{{\ifusingtt\ttsl\it #1}\futurelet\next\smartitalicx}
        !          2517: 
        !          2518: % like \smartslanted except unconditionally uses \ttsl.
        !          2519: % @var is set to this for defun arguments.
        !          2520: \def\ttslanted#1{{\ttsl #1}\futurelet\next\smartitalicx}
        !          2521: 
        !          2522: % @cite is like \smartslanted except unconditionally use \sl.  We never want
        !          2523: % ttsl for book titles, do we?
        !          2524: \def\cite#1{{\sl #1}\futurelet\next\smartitalicx}
        !          2525: 
        !          2526: \let\i=\smartitalic
        !          2527: \let\slanted=\smartslanted
        !          2528: \def\var#1{{\setupmarkupstyle{var}\smartslanted{#1}}}
        !          2529: \let\dfn=\smartslanted
        !          2530: \let\emph=\smartitalic
        !          2531: 
        !          2532: % Explicit font changes: @r, @sc, undocumented @ii.
        !          2533: \def\r#1{{\rm #1}}              % roman font
        !          2534: \def\sc#1{{\smallcaps#1}}       % smallcaps font
        !          2535: \def\ii#1{{\it #1}}             % italic font
        !          2536: 
        !          2537: % @b, explicit bold.  Also @strong.
        !          2538: \def\b#1{{\bf #1}}
        !          2539: \let\strong=\b
        !          2540: 
        !          2541: % @sansserif, explicit sans.
        !          2542: \def\sansserif#1{{\sf #1}}
        !          2543: 
        !          2544: % We can't just use \exhyphenpenalty, because that only has effect at
        !          2545: % the end of a paragraph.  Restore normal hyphenation at the end of the
        !          2546: % group within which \nohyphenation is presumably called.
        !          2547: %
        !          2548: \def\nohyphenation{\hyphenchar\font = -1  \aftergroup\restorehyphenation}
        !          2549: \def\restorehyphenation{\hyphenchar\font = `- }
        !          2550: 
        !          2551: % Set sfcode to normal for the chars that usually have another value.
        !          2552: % Can't use plain's \frenchspacing because it uses the `\x notation, and
        !          2553: % sometimes \x has an active definition that messes things up.
        !          2554: %
        !          2555: \catcode`@=11
        !          2556:   \def\plainfrenchspacing{%
        !          2557:     \sfcode\dotChar  =\@m \sfcode\questChar=\@m \sfcode\exclamChar=\@m
        !          2558:     \sfcode\colonChar=\@m \sfcode\semiChar =\@m \sfcode\commaChar =\@m
        !          2559:     \def\endofsentencespacefactor{1000}% for @. and friends
        !          2560:   }
        !          2561:   \def\plainnonfrenchspacing{%
        !          2562:     \sfcode`\.3000\sfcode`\?3000\sfcode`\!3000
        !          2563:     \sfcode`\:2000\sfcode`\;1500\sfcode`\,1250
        !          2564:     \def\endofsentencespacefactor{3000}% for @. and friends
        !          2565:   }
        !          2566: \catcode`@=\other
        !          2567: \def\endofsentencespacefactor{3000}% default
        !          2568: 
        !          2569: % @t, explicit typewriter.
        !          2570: \def\t#1{%
        !          2571:   {\tt \rawbackslash \plainfrenchspacing #1}%
        !          2572:   \null
        !          2573: }
        !          2574: 
        !          2575: % @samp.
        !          2576: \def\samp#1{{\setupmarkupstyle{samp}\lq\tclose{#1}\rq\null}}
        !          2577: 
        !          2578: % definition of @key that produces a lozenge.  Doesn't adjust to text size.
        !          2579: %\setfont\keyrm\rmshape{8}{1000}{OT1}
        !          2580: %\font\keysy=cmsy9
        !          2581: %\def\key#1{{\keyrm\textfont2=\keysy \leavevmode\hbox{%
        !          2582: %  \raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{%
        !          2583: %    \vbox{\hrule\kern-0.4pt
        !          2584: %     \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}%
        !          2585: %    \kern-0.4pt\hrule}%
        !          2586: %  \kern-.06em\raise0.4pt\hbox{\angleright}}}}
        !          2587: 
        !          2588: % definition of @key with no lozenge.  If the current font is already
        !          2589: % monospace, don't change it; that way, we respect @kbdinputstyle.  But
        !          2590: % if it isn't monospace, then use \tt.
        !          2591: %
        !          2592: \def\key#1{{\setupmarkupstyle{key}%
        !          2593:   \nohyphenation
        !          2594:   \ifmonospace\else\tt\fi
        !          2595:   #1}\null}
        !          2596: 
        !          2597: % ctrl is no longer a Texinfo command.
        !          2598: \def\ctrl #1{{\tt \rawbackslash \hat}#1}
        !          2599: 
        !          2600: % @file, @option are the same as @samp.
        !          2601: \let\file=\samp
        !          2602: \let\option=\samp
        !          2603: 
        !          2604: % @code is a modification of @t,
        !          2605: % which makes spaces the same size as normal in the surrounding text.
        !          2606: \def\tclose#1{%
        !          2607:   {%
        !          2608:     % Change normal interword space to be same as for the current font.
        !          2609:     \spaceskip = \fontdimen2\font
        !          2610:     %
        !          2611:     % Switch to typewriter.
        !          2612:     \tt
        !          2613:     %
        !          2614:     % But `\ ' produces the large typewriter interword space.
        !          2615:     \def\ {{\spaceskip = 0pt{} }}%
        !          2616:     %
        !          2617:     % Turn off hyphenation.
        !          2618:     \nohyphenation
        !          2619:     %
        !          2620:     \rawbackslash
        !          2621:     \plainfrenchspacing
        !          2622:     #1%
        !          2623:   }%
        !          2624:   \null
        !          2625: }
        !          2626: 
        !          2627: % We *must* turn on hyphenation at `-' and `_' in @code.
        !          2628: % Otherwise, it is too hard to avoid overfull hboxes
        !          2629: % in the Emacs manual, the Library manual, etc.
        !          2630: 
        !          2631: % Unfortunately, TeX uses one parameter (\hyphenchar) to control
        !          2632: % both hyphenation at - and hyphenation within words.
        !          2633: % We must therefore turn them both off (\tclose does that)
        !          2634: % and arrange explicitly to hyphenate at a dash.
        !          2635: %  -- rms.
        !          2636: {
        !          2637:   \catcode`\-=\active \catcode`\_=\active
        !          2638:   \catcode`\'=\active \catcode`\`=\active
        !          2639:   \global\let'=\rq \global\let`=\lq  % default definitions
        !          2640:   %
        !          2641:   \global\def\code{\begingroup
        !          2642:     \setupmarkupstyle{code}%
        !          2643:     % The following should really be moved into \setupmarkupstyle handlers.
        !          2644:     \catcode\dashChar=\active  \catcode\underChar=\active
        !          2645:     \ifallowcodebreaks
        !          2646:      \let-\codedash
        !          2647:      \let_\codeunder
        !          2648:     \else
        !          2649:      \let-\realdash
        !          2650:      \let_\realunder
        !          2651:     \fi
        !          2652:     \codex
        !          2653:   }
        !          2654: }
        !          2655: 
        !          2656: \def\realdash{-}
        !          2657: \def\codedash{-\discretionary{}{}{}}
        !          2658: \def\codeunder{%
        !          2659:   % this is all so @math{@code{var_name}+1} can work.  In math mode, _
        !          2660:   % is "active" (mathcode"8000) and \normalunderscore (or \char95, etc.)
        !          2661:   % will therefore expand the active definition of _, which is us
        !          2662:   % (inside @code that is), therefore an endless loop.
        !          2663:   \ifusingtt{\ifmmode
        !          2664:                \mathchar"075F % class 0=ordinary, family 7=ttfam, pos 0x5F=_.
        !          2665:              \else\normalunderscore \fi
        !          2666:              \discretionary{}{}{}}%
        !          2667:             {\_}%
        !          2668: }
        !          2669: \def\codex #1{\tclose{#1}\endgroup}
        !          2670: 
        !          2671: % An additional complication: the above will allow breaks after, e.g.,
        !          2672: % each of the four underscores in __typeof__.  This is undesirable in
        !          2673: % some manuals, especially if they don't have long identifiers in
        !          2674: % general.  @allowcodebreaks provides a way to control this.
        !          2675: %
        !          2676: \newif\ifallowcodebreaks  \allowcodebreakstrue
        !          2677: 
        !          2678: \def\keywordtrue{true}
        !          2679: \def\keywordfalse{false}
        !          2680: 
        !          2681: \parseargdef\allowcodebreaks{%
        !          2682:   \def\txiarg{#1}%
        !          2683:   \ifx\txiarg\keywordtrue
        !          2684:     \allowcodebreakstrue
        !          2685:   \else\ifx\txiarg\keywordfalse
        !          2686:     \allowcodebreaksfalse
        !          2687:   \else
        !          2688:     \errhelp = \EMsimple
        !          2689:     \errmessage{Unknown @allowcodebreaks option `\txiarg'}%
        !          2690:   \fi\fi
        !          2691: }
        !          2692: 
        !          2693: % @kbd is like @code, except that if the argument is just one @key command,
        !          2694: % then @kbd has no effect.
        !          2695: \def\kbd#1{{\setupmarkupstyle{kbd}\def\look{#1}\expandafter\kbdfoo\look??\par}}
        !          2696: 
        !          2697: % @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always),
        !          2698: %   `example' (@kbd uses ttsl only inside of @example and friends),
        !          2699: %   or `code' (@kbd uses normal tty font always).
        !          2700: \parseargdef\kbdinputstyle{%
        !          2701:   \def\txiarg{#1}%
        !          2702:   \ifx\txiarg\worddistinct
        !          2703:     \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}%
        !          2704:   \else\ifx\txiarg\wordexample
        !          2705:     \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}%
        !          2706:   \else\ifx\txiarg\wordcode
        !          2707:     \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}%
        !          2708:   \else
        !          2709:     \errhelp = \EMsimple
        !          2710:     \errmessage{Unknown @kbdinputstyle option `\txiarg'}%
        !          2711:   \fi\fi\fi
        !          2712: }
        !          2713: \def\worddistinct{distinct}
        !          2714: \def\wordexample{example}
        !          2715: \def\wordcode{code}
        !          2716: 
        !          2717: % Default is `distinct'.
        !          2718: \kbdinputstyle distinct
        !          2719: 
        !          2720: \def\xkey{\key}
        !          2721: \def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
        !          2722: \ifx\one\xkey\ifx\threex\three \key{#2}%
        !          2723: \else{\tclose{\kbdfont\setupmarkupstyle{kbd}\look}}\fi
        !          2724: \else{\tclose{\kbdfont\setupmarkupstyle{kbd}\look}}\fi}
        !          2725: 
        !          2726: % For @indicateurl, @env, @command quotes seem unnecessary, so use \code.
        !          2727: \let\indicateurl=\code
        !          2728: \let\env=\code
        !          2729: \let\command=\code
        !          2730: 
        !          2731: % @clicksequence{File @click{} Open ...}
        !          2732: \def\clicksequence#1{\begingroup #1\endgroup}
        !          2733: 
        !          2734: % @clickstyle @arrow   (by default)
        !          2735: \parseargdef\clickstyle{\def\click{#1}}
        !          2736: \def\click{\arrow}
        !          2737: 
        !          2738: % @uref (abbreviation for `urlref') takes an optional (comma-separated)
        !          2739: % second argument specifying the text to display and an optional third
        !          2740: % arg as text to display instead of (rather than in addition to) the url
        !          2741: % itself.  First (mandatory) arg is the url.  Perhaps eventually put in
        !          2742: % a hypertex \special here.
        !          2743: %
        !          2744: \def\uref#1{\douref #1,,,\finish}
        !          2745: \def\douref#1,#2,#3,#4\finish{\begingroup
        !          2746:   \unsepspaces
        !          2747:   \pdfurl{#1}%
        !          2748:   \setbox0 = \hbox{\ignorespaces #3}%
        !          2749:   \ifdim\wd0 > 0pt
        !          2750:     \unhbox0 % third arg given, show only that
        !          2751:   \else
        !          2752:     \setbox0 = \hbox{\ignorespaces #2}%
        !          2753:     \ifdim\wd0 > 0pt
        !          2754:       \ifpdf
        !          2755:         \unhbox0             % PDF: 2nd arg given, show only it
        !          2756:       \else
        !          2757:         \unhbox0\ (\code{#1})% DVI: 2nd arg given, show both it and url
        !          2758:       \fi
        !          2759:     \else
        !          2760:       \code{#1}% only url given, so show it
        !          2761:     \fi
        !          2762:   \fi
        !          2763:   \endlink
        !          2764: \endgroup}
        !          2765: 
        !          2766: % @url synonym for @uref, since that's how everyone uses it.
        !          2767: %
        !          2768: \let\url=\uref
        !          2769: 
        !          2770: % rms does not like angle brackets --karl, 17may97.
        !          2771: % So now @email is just like @uref, unless we are pdf.
        !          2772: %
        !          2773: %\def\email#1{\angleleft{\tt #1}\angleright}
        !          2774: \ifpdf
        !          2775:   \def\email#1{\doemail#1,,\finish}
        !          2776:   \def\doemail#1,#2,#3\finish{\begingroup
        !          2777:     \unsepspaces
        !          2778:     \pdfurl{mailto:#1}%
        !          2779:     \setbox0 = \hbox{\ignorespaces #2}%
        !          2780:     \ifdim\wd0>0pt\unhbox0\else\code{#1}\fi
        !          2781:     \endlink
        !          2782:   \endgroup}
        !          2783: \else
        !          2784:   \let\email=\uref
        !          2785: \fi
        !          2786: 
        !          2787: % Typeset a dimension, e.g., `in' or `pt'.  The only reason for the
        !          2788: % argument is to make the input look right: @dmn{pt} instead of @dmn{}pt.
        !          2789: %
        !          2790: \def\dmn#1{\thinspace #1}
        !          2791: 
        !          2792: % @l was never documented to mean ``switch to the Lisp font'',
        !          2793: % and it is not used as such in any manual I can find.  We need it for
        !          2794: % Polish suppressed-l.  --karl, 22sep96.
        !          2795: %\def\l#1{{\li #1}\null}
        !          2796: 
        !          2797: % @acronym for "FBI", "NATO", and the like.
        !          2798: % We print this one point size smaller, since it's intended for
        !          2799: % all-uppercase.
        !          2800: %
        !          2801: \def\acronym#1{\doacronym #1,,\finish}
        !          2802: \def\doacronym#1,#2,#3\finish{%
        !          2803:   {\selectfonts\lsize #1}%
        !          2804:   \def\temp{#2}%
        !          2805:   \ifx\temp\empty \else
        !          2806:     \space ({\unsepspaces \ignorespaces \temp \unskip})%
        !          2807:   \fi
        !          2808: }
        !          2809: 
        !          2810: % @abbr for "Comput. J." and the like.
        !          2811: % No font change, but don't do end-of-sentence spacing.
        !          2812: %
        !          2813: \def\abbr#1{\doabbr #1,,\finish}
        !          2814: \def\doabbr#1,#2,#3\finish{%
        !          2815:   {\plainfrenchspacing #1}%
        !          2816:   \def\temp{#2}%
        !          2817:   \ifx\temp\empty \else
        !          2818:     \space ({\unsepspaces \ignorespaces \temp \unskip})%
        !          2819:   \fi
        !          2820: }
        !          2821: 
        !          2822: 
        !          2823: \message{glyphs,}
        !          2824: 
        !          2825: % @point{}, @result{}, @expansion{}, @print{}, @equiv{}.
        !          2826: %
        !          2827: % Since these characters are used in examples, they should be an even number of
        !          2828: % \tt widths. Each \tt character is 1en, so two makes it 1em.
        !          2829: %
        !          2830: \def\point{$\star$}
        !          2831: \def\arrow{\leavevmode\raise.05ex\hbox to 1em{\hfil$\rightarrow$\hfil}}
        !          2832: \def\result{\leavevmode\raise.05ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
        !          2833: \def\expansion{\leavevmode\hbox to 1em{\hfil$\mapsto$\hfil}}
        !          2834: \def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
        !          2835: \def\equiv{\leavevmode\hbox to 1em{\hfil$\ptexequiv$\hfil}}
        !          2836: 
        !          2837: % The @error{} command.
        !          2838: % Adapted from the TeXbook's \boxit.
        !          2839: %
        !          2840: \newbox\errorbox
        !          2841: %
        !          2842: {\tentt \global\dimen0 = 3em}% Width of the box.
        !          2843: \dimen2 = .55pt % Thickness of rules
        !          2844: % The text. (`r' is open on the right, `e' somewhat less so on the left.)
        !          2845: \setbox0 = \hbox{\kern-.75pt \reducedsf error\kern-1.5pt}
        !          2846: %
        !          2847: \setbox\errorbox=\hbox to \dimen0{\hfil
        !          2848:    \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
        !          2849:    \advance\hsize by -2\dimen2 % Rules.
        !          2850:    \vbox{%
        !          2851:       \hrule height\dimen2
        !          2852:       \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
        !          2853:          \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
        !          2854:          \kern3pt\vrule width\dimen2}% Space to right.
        !          2855:       \hrule height\dimen2}
        !          2856:     \hfil}
        !          2857: %
        !          2858: \def\error{\leavevmode\lower.7ex\copy\errorbox}
        !          2859: 
        !          2860: % @pounds{} is a sterling sign, which Knuth put in the CM italic font.
        !          2861: %
        !          2862: \def\pounds{{\it\$}}
        !          2863: 
        !          2864: % @euro{} comes from a separate font, depending on the current style.
        !          2865: % We use the free feym* fonts from the eurosym package by Henrik
        !          2866: % Theiling, which support regular, slanted, bold and bold slanted (and
        !          2867: % "outlined" (blackboard board, sort of) versions, which we don't need).
        !          2868: % It is available from http://www.ctan.org/tex-archive/fonts/eurosym.
        !          2869: %
        !          2870: % Although only regular is the truly official Euro symbol, we ignore
        !          2871: % that.  The Euro is designed to be slightly taller than the regular
        !          2872: % font height.
        !          2873: %
        !          2874: % feymr - regular
        !          2875: % feymo - slanted
        !          2876: % feybr - bold
        !          2877: % feybo - bold slanted
        !          2878: %
        !          2879: % There is no good (free) typewriter version, to my knowledge.
        !          2880: % A feymr10 euro is ~7.3pt wide, while a normal cmtt10 char is ~5.25pt wide.
        !          2881: % Hmm.
        !          2882: %
        !          2883: % Also doesn't work in math.  Do we need to do math with euro symbols?
        !          2884: % Hope not.
        !          2885: %
        !          2886: %
        !          2887: \def\euro{{\eurofont e}}
        !          2888: \def\eurofont{%
        !          2889:   % We set the font at each command, rather than predefining it in
        !          2890:   % \textfonts and the other font-switching commands, so that
        !          2891:   % installations which never need the symbol don't have to have the
        !          2892:   % font installed.
        !          2893:   %
        !          2894:   % There is only one designed size (nominal 10pt), so we always scale
        !          2895:   % that to the current nominal size.
        !          2896:   %
        !          2897:   % By the way, simply using "at 1em" works for cmr10 and the like, but
        !          2898:   % does not work for cmbx10 and other extended/shrunken fonts.
        !          2899:   %
        !          2900:   \def\eurosize{\csname\curfontsize nominalsize\endcsname}%
        !          2901:   %
        !          2902:   \ifx\curfontstyle\bfstylename
        !          2903:     % bold:
        !          2904:     \font\thiseurofont = \ifusingit{feybo10}{feybr10} at \eurosize
        !          2905:   \else
        !          2906:     % regular:
        !          2907:     \font\thiseurofont = \ifusingit{feymo10}{feymr10} at \eurosize
        !          2908:   \fi
        !          2909:   \thiseurofont
        !          2910: }
        !          2911: 
        !          2912: % Glyphs from the EC fonts.  We don't use \let for the aliases, because
        !          2913: % sometimes we redefine the original macro, and the alias should reflect
        !          2914: % the redefinition.
        !          2915: %
        !          2916: % Use LaTeX names for the Icelandic letters.
        !          2917: \def\DH{{\ecfont \char"D0}} % Eth
        !          2918: \def\dh{{\ecfont \char"F0}} % eth
        !          2919: \def\TH{{\ecfont \char"DE}} % Thorn
        !          2920: \def\th{{\ecfont \char"FE}} % thorn
        !          2921: %
        !          2922: \def\guillemetleft{{\ecfont \char"13}}
        !          2923: \def\guillemotleft{\guillemetleft}
        !          2924: \def\guillemetright{{\ecfont \char"14}}
        !          2925: \def\guillemotright{\guillemetright}
        !          2926: \def\guilsinglleft{{\ecfont \char"0E}}
        !          2927: \def\guilsinglright{{\ecfont \char"0F}}
        !          2928: \def\quotedblbase{{\ecfont \char"12}}
        !          2929: \def\quotesinglbase{{\ecfont \char"0D}}
        !          2930: %
        !          2931: % This positioning is not perfect (see the ogonek LaTeX package), but
        !          2932: % we have the precomposed glyphs for the most common cases.  We put the
        !          2933: % tests to use those glyphs in the single \ogonek macro so we have fewer
        !          2934: % dummy definitions to worry about for index entries, etc.
        !          2935: %
        !          2936: % ogonek is also used with other letters in Lithuanian (IOU), but using
        !          2937: % the precomposed glyphs for those is not so easy since they aren't in
        !          2938: % the same EC font.
        !          2939: \def\ogonek#1{{%
        !          2940:   \def\temp{#1}%
        !          2941:   \ifx\temp\macrocharA\Aogonek
        !          2942:   \else\ifx\temp\macrochara\aogonek
        !          2943:   \else\ifx\temp\macrocharE\Eogonek
        !          2944:   \else\ifx\temp\macrochare\eogonek
        !          2945:   \else
        !          2946:     \ecfont \setbox0=\hbox{#1}%
        !          2947:     \ifdim\ht0=1ex\accent"0C #1%
        !          2948:     \else\ooalign{\unhbox0\crcr\hidewidth\char"0C \hidewidth}%
        !          2949:     \fi
        !          2950:   \fi\fi\fi\fi
        !          2951:   }%
        !          2952: }
        !          2953: \def\Aogonek{{\ecfont \char"81}}\def\macrocharA{A}
        !          2954: \def\aogonek{{\ecfont \char"A1}}\def\macrochara{a}
        !          2955: \def\Eogonek{{\ecfont \char"86}}\def\macrocharE{E}
        !          2956: \def\eogonek{{\ecfont \char"A6}}\def\macrochare{e}
        !          2957: %
        !          2958: % Use the ec* fonts (cm-super in outline format) for non-CM glyphs.
        !          2959: \def\ecfont{%
        !          2960:   % We can't distinguish serif/sans and italic/slanted, but this
        !          2961:   % is used for crude hacks anyway (like adding French and German
        !          2962:   % quotes to documents typeset with CM, where we lose kerning), so
        !          2963:   % hopefully nobody will notice/care.
        !          2964:   \edef\ecsize{\csname\curfontsize ecsize\endcsname}%
        !          2965:   \edef\nominalsize{\csname\curfontsize nominalsize\endcsname}%
        !          2966:   \ifx\curfontstyle\bfstylename
        !          2967:     % bold:
        !          2968:     \font\thisecfont = ecb\ifusingit{i}{x}\ecsize \space at \nominalsize
        !          2969:   \else
        !          2970:     % regular:
        !          2971:     \font\thisecfont = ec\ifusingit{ti}{rm}\ecsize \space at \nominalsize
        !          2972:   \fi
        !          2973:   \thisecfont
        !          2974: }
        !          2975: 
        !          2976: % @registeredsymbol - R in a circle.  The font for the R should really
        !          2977: % be smaller yet, but lllsize is the best we can do for now.
        !          2978: % Adapted from the plain.tex definition of \copyright.
        !          2979: %
        !          2980: \def\registeredsymbol{%
        !          2981:   $^{{\ooalign{\hfil\raise.07ex\hbox{\selectfonts\lllsize R}%
        !          2982:                \hfil\crcr\Orb}}%
        !          2983:     }$%
        !          2984: }
        !          2985: 
        !          2986: % @textdegree - the normal degrees sign.
        !          2987: %
        !          2988: \def\textdegree{$^\circ$}
        !          2989: 
        !          2990: % Laurent Siebenmann reports \Orb undefined with:
        !          2991: %  Textures 1.7.7 (preloaded format=plain 93.10.14)  (68K)  16 APR 2004 02:38
        !          2992: % so we'll define it if necessary.
        !          2993: %
        !          2994: \ifx\Orb\undefined
        !          2995: \def\Orb{\mathhexbox20D}
        !          2996: \fi
        !          2997: 
        !          2998: % Quotes.
        !          2999: \chardef\quotedblleft="5C
        !          3000: \chardef\quotedblright=`\"
        !          3001: \chardef\quoteleft=`\`
        !          3002: \chardef\quoteright=`\'
        !          3003: 
        !          3004: 
        !          3005: \message{page headings,}
        !          3006: 
        !          3007: \newskip\titlepagetopglue \titlepagetopglue = 1.5in
        !          3008: \newskip\titlepagebottomglue \titlepagebottomglue = 2pc
        !          3009: 
        !          3010: % First the title page.  Must do @settitle before @titlepage.
        !          3011: \newif\ifseenauthor
        !          3012: \newif\iffinishedtitlepage
        !          3013: 
        !          3014: % Do an implicit @contents or @shortcontents after @end titlepage if the
        !          3015: % user says @setcontentsaftertitlepage or @setshortcontentsaftertitlepage.
        !          3016: %
        !          3017: \newif\ifsetcontentsaftertitlepage
        !          3018:  \let\setcontentsaftertitlepage = \setcontentsaftertitlepagetrue
        !          3019: \newif\ifsetshortcontentsaftertitlepage
        !          3020:  \let\setshortcontentsaftertitlepage = \setshortcontentsaftertitlepagetrue
        !          3021: 
        !          3022: \parseargdef\shorttitlepage{\begingroup\hbox{}\vskip 1.5in \chaprm \centerline{#1}%
        !          3023:         \endgroup\page\hbox{}\page}
        !          3024: 
        !          3025: \envdef\titlepage{%
        !          3026:   % Open one extra group, as we want to close it in the middle of \Etitlepage.
        !          3027:   \begingroup
        !          3028:     \parindent=0pt \textfonts
        !          3029:     % Leave some space at the very top of the page.
        !          3030:     \vglue\titlepagetopglue
        !          3031:     % No rule at page bottom unless we print one at the top with @title.
        !          3032:     \finishedtitlepagetrue
        !          3033:     %
        !          3034:     % Most title ``pages'' are actually two pages long, with space
        !          3035:     % at the top of the second.  We don't want the ragged left on the second.
        !          3036:     \let\oldpage = \page
        !          3037:     \def\page{%
        !          3038:       \iffinishedtitlepage\else
        !          3039:         \finishtitlepage
        !          3040:       \fi
        !          3041:       \let\page = \oldpage
        !          3042:       \page
        !          3043:       \null
        !          3044:     }%
        !          3045: }
        !          3046: 
        !          3047: \def\Etitlepage{%
        !          3048:     \iffinishedtitlepage\else
        !          3049:        \finishtitlepage
        !          3050:     \fi
        !          3051:     % It is important to do the page break before ending the group,
        !          3052:     % because the headline and footline are only empty inside the group.
        !          3053:     % If we use the new definition of \page, we always get a blank page
        !          3054:     % after the title page, which we certainly don't want.
        !          3055:     \oldpage
        !          3056:   \endgroup
        !          3057:   %
        !          3058:   % Need this before the \...aftertitlepage checks so that if they are
        !          3059:   % in effect the toc pages will come out with page numbers.
        !          3060:   \HEADINGSon
        !          3061:   %
        !          3062:   % If they want short, they certainly want long too.
        !          3063:   \ifsetshortcontentsaftertitlepage
        !          3064:     \shortcontents
        !          3065:     \contents
        !          3066:     \global\let\shortcontents = \relax
        !          3067:     \global\let\contents = \relax
        !          3068:   \fi
        !          3069:   %
        !          3070:   \ifsetcontentsaftertitlepage
        !          3071:     \contents
        !          3072:     \global\let\contents = \relax
        !          3073:     \global\let\shortcontents = \relax
        !          3074:   \fi
        !          3075: }
        !          3076: 
        !          3077: \def\finishtitlepage{%
        !          3078:   \vskip4pt \hrule height 2pt width \hsize
        !          3079:   \vskip\titlepagebottomglue
        !          3080:   \finishedtitlepagetrue
        !          3081: }
        !          3082: 
        !          3083: %%% Macros to be used within @titlepage:
        !          3084: 
        !          3085: \let\subtitlerm=\tenrm
        !          3086: \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}
        !          3087: 
        !          3088: \parseargdef\title{%
        !          3089:   \checkenv\titlepage
        !          3090:   \leftline{\titlefonts\rmisbold #1}
        !          3091:   % print a rule at the page bottom also.
        !          3092:   \finishedtitlepagefalse
        !          3093:   \vskip4pt \hrule height 4pt width \hsize \vskip4pt
        !          3094: }
        !          3095: 
        !          3096: \parseargdef\subtitle{%
        !          3097:   \checkenv\titlepage
        !          3098:   {\subtitlefont \rightline{#1}}%
        !          3099: }
        !          3100: 
        !          3101: % @author should come last, but may come many times.
        !          3102: % It can also be used inside @quotation.
        !          3103: %
        !          3104: \parseargdef\author{%
        !          3105:   \def\temp{\quotation}%
        !          3106:   \ifx\thisenv\temp
        !          3107:     \def\quotationauthor{#1}% printed in \Equotation.
        !          3108:   \else
        !          3109:     \checkenv\titlepage
        !          3110:     \ifseenauthor\else \vskip 0pt plus 1filll \seenauthortrue \fi
        !          3111:     {\secfonts\rmisbold \leftline{#1}}%
        !          3112:   \fi
        !          3113: }
        !          3114: 
        !          3115: 
        !          3116: %%% Set up page headings and footings.
        !          3117: 
        !          3118: \let\thispage=\folio
        !          3119: 
        !          3120: \newtoks\evenheadline    % headline on even pages
        !          3121: \newtoks\oddheadline     % headline on odd pages
        !          3122: \newtoks\evenfootline    % footline on even pages
        !          3123: \newtoks\oddfootline     % footline on odd pages
        !          3124: 
        !          3125: % Now make TeX use those variables
        !          3126: \headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
        !          3127:                             \else \the\evenheadline \fi}}
        !          3128: \footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
        !          3129:                             \else \the\evenfootline \fi}\HEADINGShook}
        !          3130: \let\HEADINGShook=\relax
        !          3131: 
        !          3132: % Commands to set those variables.
        !          3133: % For example, this is what  @headings on  does
        !          3134: % @evenheading @thistitle|@thispage|@thischapter
        !          3135: % @oddheading @thischapter|@thispage|@thistitle
        !          3136: % @evenfooting @thisfile||
        !          3137: % @oddfooting ||@thisfile
        !          3138: 
        !          3139: 
        !          3140: \def\evenheading{\parsearg\evenheadingxxx}
        !          3141: \def\evenheadingxxx #1{\evenheadingyyy #1\|\|\|\|\finish}
        !          3142: \def\evenheadingyyy #1\|#2\|#3\|#4\finish{%
        !          3143: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !          3144: 
        !          3145: \def\oddheading{\parsearg\oddheadingxxx}
        !          3146: \def\oddheadingxxx #1{\oddheadingyyy #1\|\|\|\|\finish}
        !          3147: \def\oddheadingyyy #1\|#2\|#3\|#4\finish{%
        !          3148: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !          3149: 
        !          3150: \parseargdef\everyheading{\oddheadingxxx{#1}\evenheadingxxx{#1}}%
        !          3151: 
        !          3152: \def\evenfooting{\parsearg\evenfootingxxx}
        !          3153: \def\evenfootingxxx #1{\evenfootingyyy #1\|\|\|\|\finish}
        !          3154: \def\evenfootingyyy #1\|#2\|#3\|#4\finish{%
        !          3155: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !          3156: 
        !          3157: \def\oddfooting{\parsearg\oddfootingxxx}
        !          3158: \def\oddfootingxxx #1{\oddfootingyyy #1\|\|\|\|\finish}
        !          3159: \def\oddfootingyyy #1\|#2\|#3\|#4\finish{%
        !          3160:   \global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}%
        !          3161:   %
        !          3162:   % Leave some space for the footline.  Hopefully ok to assume
        !          3163:   % @evenfooting will not be used by itself.
        !          3164:   \global\advance\pageheight by -12pt
        !          3165:   \global\advance\vsize by -12pt
        !          3166: }
        !          3167: 
        !          3168: \parseargdef\everyfooting{\oddfootingxxx{#1}\evenfootingxxx{#1}}
        !          3169: 
        !          3170: % @evenheadingmarks top     \thischapter <- chapter at the top of a page
        !          3171: % @evenheadingmarks bottom  \thischapter <- chapter at the bottom of a page
        !          3172: %
        !          3173: % The same set of arguments for:
        !          3174: %
        !          3175: % @oddheadingmarks
        !          3176: % @evenfootingmarks
        !          3177: % @oddfootingmarks
        !          3178: % @everyheadingmarks
        !          3179: % @everyfootingmarks
        !          3180: 
        !          3181: \def\evenheadingmarks{\headingmarks{even}{heading}}
        !          3182: \def\oddheadingmarks{\headingmarks{odd}{heading}}
        !          3183: \def\evenfootingmarks{\headingmarks{even}{footing}}
        !          3184: \def\oddfootingmarks{\headingmarks{odd}{footing}}
        !          3185: \def\everyheadingmarks#1 {\headingmarks{even}{heading}{#1}
        !          3186:                           \headingmarks{odd}{heading}{#1} }
        !          3187: \def\everyfootingmarks#1 {\headingmarks{even}{footing}{#1}
        !          3188:                           \headingmarks{odd}{footing}{#1} }
        !          3189: % #1 = even/odd, #2 = heading/footing, #3 = top/bottom.
        !          3190: \def\headingmarks#1#2#3 {%
        !          3191:   \expandafter\let\expandafter\temp \csname get#3headingmarks\endcsname
        !          3192:   \global\expandafter\let\csname get#1#2marks\endcsname \temp
        !          3193: }
        !          3194: 
        !          3195: \everyheadingmarks bottom
        !          3196: \everyfootingmarks bottom
        !          3197: 
        !          3198: % @headings double      turns headings on for double-sided printing.
        !          3199: % @headings single      turns headings on for single-sided printing.
        !          3200: % @headings off         turns them off.
        !          3201: % @headings on          same as @headings double, retained for compatibility.
        !          3202: % @headings after       turns on double-sided headings after this page.
        !          3203: % @headings doubleafter turns on double-sided headings after this page.
        !          3204: % @headings singleafter turns on single-sided headings after this page.
        !          3205: % By default, they are off at the start of a document,
        !          3206: % and turned `on' after @end titlepage.
        !          3207: 
        !          3208: \def\headings #1 {\csname HEADINGS#1\endcsname}
        !          3209: 
        !          3210: \def\HEADINGSoff{%
        !          3211: \global\evenheadline={\hfil} \global\evenfootline={\hfil}
        !          3212: \global\oddheadline={\hfil} \global\oddfootline={\hfil}}
        !          3213: \HEADINGSoff
        !          3214: % When we turn headings on, set the page number to 1.
        !          3215: % For double-sided printing, put current file name in lower left corner,
        !          3216: % chapter name on inside top of right hand pages, document
        !          3217: % title on inside top of left hand pages, and page numbers on outside top
        !          3218: % edge of all pages.
        !          3219: \def\HEADINGSdouble{%
        !          3220: \global\pageno=1
        !          3221: \global\evenfootline={\hfil}
        !          3222: \global\oddfootline={\hfil}
        !          3223: \global\evenheadline={\line{\folio\hfil\thistitle}}
        !          3224: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !          3225: \global\let\contentsalignmacro = \chapoddpage
        !          3226: }
        !          3227: \let\contentsalignmacro = \chappager
        !          3228: 
        !          3229: % For single-sided printing, chapter title goes across top left of page,
        !          3230: % page number on top right.
        !          3231: \def\HEADINGSsingle{%
        !          3232: \global\pageno=1
        !          3233: \global\evenfootline={\hfil}
        !          3234: \global\oddfootline={\hfil}
        !          3235: \global\evenheadline={\line{\thischapter\hfil\folio}}
        !          3236: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !          3237: \global\let\contentsalignmacro = \chappager
        !          3238: }
        !          3239: \def\HEADINGSon{\HEADINGSdouble}
        !          3240: 
        !          3241: \def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
        !          3242: \let\HEADINGSdoubleafter=\HEADINGSafter
        !          3243: \def\HEADINGSdoublex{%
        !          3244: \global\evenfootline={\hfil}
        !          3245: \global\oddfootline={\hfil}
        !          3246: \global\evenheadline={\line{\folio\hfil\thistitle}}
        !          3247: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !          3248: \global\let\contentsalignmacro = \chapoddpage
        !          3249: }
        !          3250: 
        !          3251: \def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
        !          3252: \def\HEADINGSsinglex{%
        !          3253: \global\evenfootline={\hfil}
        !          3254: \global\oddfootline={\hfil}
        !          3255: \global\evenheadline={\line{\thischapter\hfil\folio}}
        !          3256: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !          3257: \global\let\contentsalignmacro = \chappager
        !          3258: }
        !          3259: 
        !          3260: % Subroutines used in generating headings
        !          3261: % This produces Day Month Year style of output.
        !          3262: % Only define if not already defined, in case a txi-??.tex file has set
        !          3263: % up a different format (e.g., txi-cs.tex does this).
        !          3264: \ifx\today\undefined
        !          3265: \def\today{%
        !          3266:   \number\day\space
        !          3267:   \ifcase\month
        !          3268:   \or\putwordMJan\or\putwordMFeb\or\putwordMMar\or\putwordMApr
        !          3269:   \or\putwordMMay\or\putwordMJun\or\putwordMJul\or\putwordMAug
        !          3270:   \or\putwordMSep\or\putwordMOct\or\putwordMNov\or\putwordMDec
        !          3271:   \fi
        !          3272:   \space\number\year}
        !          3273: \fi
        !          3274: 
        !          3275: % @settitle line...  specifies the title of the document, for headings.
        !          3276: % It generates no output of its own.
        !          3277: \def\thistitle{\putwordNoTitle}
        !          3278: \def\settitle{\parsearg{\gdef\thistitle}}
        !          3279: 
        !          3280: 
        !          3281: \message{tables,}
        !          3282: % Tables -- @table, @ftable, @vtable, @item(x).
        !          3283: 
        !          3284: % default indentation of table text
        !          3285: \newdimen\tableindent \tableindent=.8in
        !          3286: % default indentation of @itemize and @enumerate text
        !          3287: \newdimen\itemindent  \itemindent=.3in
        !          3288: % margin between end of table item and start of table text.
        !          3289: \newdimen\itemmargin  \itemmargin=.1in
        !          3290: 
        !          3291: % used internally for \itemindent minus \itemmargin
        !          3292: \newdimen\itemmax
        !          3293: 
        !          3294: % Note @table, @ftable, and @vtable define @item, @itemx, etc., with
        !          3295: % these defs.
        !          3296: % They also define \itemindex
        !          3297: % to index the item name in whatever manner is desired (perhaps none).
        !          3298: 
        !          3299: \newif\ifitemxneedsnegativevskip
        !          3300: 
        !          3301: \def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi}
        !          3302: 
        !          3303: \def\internalBitem{\smallbreak \parsearg\itemzzz}
        !          3304: \def\internalBitemx{\itemxpar \parsearg\itemzzz}
        !          3305: 
        !          3306: \def\itemzzz #1{\begingroup %
        !          3307:   \advance\hsize by -\rightskip
        !          3308:   \advance\hsize by -\tableindent
        !          3309:   \setbox0=\hbox{\itemindicate{#1}}%
        !          3310:   \itemindex{#1}%
        !          3311:   \nobreak % This prevents a break before @itemx.
        !          3312:   %
        !          3313:   % If the item text does not fit in the space we have, put it on a line
        !          3314:   % by itself, and do not allow a page break either before or after that
        !          3315:   % line.  We do not start a paragraph here because then if the next
        !          3316:   % command is, e.g., @kindex, the whatsit would get put into the
        !          3317:   % horizontal list on a line by itself, resulting in extra blank space.
        !          3318:   \ifdim \wd0>\itemmax
        !          3319:     %
        !          3320:     % Make this a paragraph so we get the \parskip glue and wrapping,
        !          3321:     % but leave it ragged-right.
        !          3322:     \begingroup
        !          3323:       \advance\leftskip by-\tableindent
        !          3324:       \advance\hsize by\tableindent
        !          3325:       \advance\rightskip by0pt plus1fil
        !          3326:       \leavevmode\unhbox0\par
        !          3327:     \endgroup
        !          3328:     %
        !          3329:     % We're going to be starting a paragraph, but we don't want the
        !          3330:     % \parskip glue -- logically it's part of the @item we just started.
        !          3331:     \nobreak \vskip-\parskip
        !          3332:     %
        !          3333:     % Stop a page break at the \parskip glue coming up.  However, if
        !          3334:     % what follows is an environment such as @example, there will be no
        !          3335:     % \parskip glue; then the negative vskip we just inserted would
        !          3336:     % cause the example and the item to crash together.  So we use this
        !          3337:     % bizarre value of 10001 as a signal to \aboveenvbreak to insert
        !          3338:     % \parskip glue after all.  Section titles are handled this way also.
        !          3339:     %
        !          3340:     \penalty 10001
        !          3341:     \endgroup
        !          3342:     \itemxneedsnegativevskipfalse
        !          3343:   \else
        !          3344:     % The item text fits into the space.  Start a paragraph, so that the
        !          3345:     % following text (if any) will end up on the same line.
        !          3346:     \noindent
        !          3347:     % Do this with kerns and \unhbox so that if there is a footnote in
        !          3348:     % the item text, it can migrate to the main vertical list and
        !          3349:     % eventually be printed.
        !          3350:     \nobreak\kern-\tableindent
        !          3351:     \dimen0 = \itemmax  \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0
        !          3352:     \unhbox0
        !          3353:     \nobreak\kern\dimen0
        !          3354:     \endgroup
        !          3355:     \itemxneedsnegativevskiptrue
        !          3356:   \fi
        !          3357: }
        !          3358: 
        !          3359: \def\item{\errmessage{@item while not in a list environment}}
        !          3360: \def\itemx{\errmessage{@itemx while not in a list environment}}
        !          3361: 
        !          3362: % @table, @ftable, @vtable.
        !          3363: \envdef\table{%
        !          3364:   \let\itemindex\gobble
        !          3365:   \tablecheck{table}%
        !          3366: }
        !          3367: \envdef\ftable{%
        !          3368:   \def\itemindex ##1{\doind {fn}{\code{##1}}}%
        !          3369:   \tablecheck{ftable}%
        !          3370: }
        !          3371: \envdef\vtable{%
        !          3372:   \def\itemindex ##1{\doind {vr}{\code{##1}}}%
        !          3373:   \tablecheck{vtable}%
        !          3374: }
        !          3375: \def\tablecheck#1{%
        !          3376:   \ifnum \the\catcode`\^^M=\active
        !          3377:     \endgroup
        !          3378:     \errmessage{This command won't work in this context; perhaps the problem is
        !          3379:       that we are \inenvironment\thisenv}%
        !          3380:     \def\next{\doignore{#1}}%
        !          3381:   \else
        !          3382:     \let\next\tablex
        !          3383:   \fi
        !          3384:   \next
        !          3385: }
        !          3386: \def\tablex#1{%
        !          3387:   \def\itemindicate{#1}%
        !          3388:   \parsearg\tabley
        !          3389: }
        !          3390: \def\tabley#1{%
        !          3391:   {%
        !          3392:     \makevalueexpandable
        !          3393:     \edef\temp{\noexpand\tablez #1\space\space\space}%
        !          3394:     \expandafter
        !          3395:   }\temp \endtablez
        !          3396: }
        !          3397: \def\tablez #1 #2 #3 #4\endtablez{%
        !          3398:   \aboveenvbreak
        !          3399:   \ifnum 0#1>0 \advance \leftskip by #1\mil \fi
        !          3400:   \ifnum 0#2>0 \tableindent=#2\mil \fi
        !          3401:   \ifnum 0#3>0 \advance \rightskip by #3\mil \fi
        !          3402:   \itemmax=\tableindent
        !          3403:   \advance \itemmax by -\itemmargin
        !          3404:   \advance \leftskip by \tableindent
        !          3405:   \exdentamount=\tableindent
        !          3406:   \parindent = 0pt
        !          3407:   \parskip = \smallskipamount
        !          3408:   \ifdim \parskip=0pt \parskip=2pt \fi
        !          3409:   \let\item = \internalBitem
        !          3410:   \let\itemx = \internalBitemx
        !          3411: }
        !          3412: \def\Etable{\endgraf\afterenvbreak}
        !          3413: \let\Eftable\Etable
        !          3414: \let\Evtable\Etable
        !          3415: \let\Eitemize\Etable
        !          3416: \let\Eenumerate\Etable
        !          3417: 
        !          3418: % This is the counter used by @enumerate, which is really @itemize
        !          3419: 
        !          3420: \newcount \itemno
        !          3421: 
        !          3422: \envdef\itemize{\parsearg\doitemize}
        !          3423: 
        !          3424: \def\doitemize#1{%
        !          3425:   \aboveenvbreak
        !          3426:   \itemmax=\itemindent
        !          3427:   \advance\itemmax by -\itemmargin
        !          3428:   \advance\leftskip by \itemindent
        !          3429:   \exdentamount=\itemindent
        !          3430:   \parindent=0pt
        !          3431:   \parskip=\smallskipamount
        !          3432:   \ifdim\parskip=0pt \parskip=2pt \fi
        !          3433:   %
        !          3434:   % Try typesetting the item mark that if the document erroneously says
        !          3435:   % something like @itemize @samp (intending @table), there's an error
        !          3436:   % right away at the @itemize.  It's not the best error message in the
        !          3437:   % world, but it's better than leaving it to the @item.  This means if
        !          3438:   % the user wants an empty mark, they have to say @w{} not just @w.
        !          3439:   \def\itemcontents{#1}%
        !          3440:   \setbox0 = \hbox{\itemcontents}%
        !          3441:   %
        !          3442:   % @itemize with no arg is equivalent to @itemize @bullet.
        !          3443:   \ifx\itemcontents\empty\def\itemcontents{\bullet}\fi
        !          3444:   %
        !          3445:   \let\item=\itemizeitem
        !          3446: }
        !          3447: 
        !          3448: % Definition of @item while inside @itemize and @enumerate.
        !          3449: %
        !          3450: \def\itemizeitem{%
        !          3451:   \advance\itemno by 1  % for enumerations
        !          3452:   {\let\par=\endgraf \smallbreak}% reasonable place to break
        !          3453:   {%
        !          3454:    % If the document has an @itemize directly after a section title, a
        !          3455:    % \nobreak will be last on the list, and \sectionheading will have
        !          3456:    % done a \vskip-\parskip.  In that case, we don't want to zero
        !          3457:    % parskip, or the item text will crash with the heading.  On the
        !          3458:    % other hand, when there is normal text preceding the item (as there
        !          3459:    % usually is), we do want to zero parskip, or there would be too much
        !          3460:    % space.  In that case, we won't have a \nobreak before.  At least
        !          3461:    % that's the theory.
        !          3462:    \ifnum\lastpenalty<10000 \parskip=0in \fi
        !          3463:    \noindent
        !          3464:    \hbox to 0pt{\hss \itemcontents \kern\itemmargin}%
        !          3465:    %
        !          3466:    \vadjust{\penalty 1200}}% not good to break after first line of item.
        !          3467:   \flushcr
        !          3468: }
        !          3469: 
        !          3470: % \splitoff TOKENS\endmark defines \first to be the first token in
        !          3471: % TOKENS, and \rest to be the remainder.
        !          3472: %
        !          3473: \def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
        !          3474: 
        !          3475: % Allow an optional argument of an uppercase letter, lowercase letter,
        !          3476: % or number, to specify the first label in the enumerated list.  No
        !          3477: % argument is the same as `1'.
        !          3478: %
        !          3479: \envparseargdef\enumerate{\enumeratey #1  \endenumeratey}
        !          3480: \def\enumeratey #1 #2\endenumeratey{%
        !          3481:   % If we were given no argument, pretend we were given `1'.
        !          3482:   \def\thearg{#1}%
        !          3483:   \ifx\thearg\empty \def\thearg{1}\fi
        !          3484:   %
        !          3485:   % Detect if the argument is a single token.  If so, it might be a
        !          3486:   % letter.  Otherwise, the only valid thing it can be is a number.
        !          3487:   % (We will always have one token, because of the test we just made.
        !          3488:   % This is a good thing, since \splitoff doesn't work given nothing at
        !          3489:   % all -- the first parameter is undelimited.)
        !          3490:   \expandafter\splitoff\thearg\endmark
        !          3491:   \ifx\rest\empty
        !          3492:     % Only one token in the argument.  It could still be anything.
        !          3493:     % A ``lowercase letter'' is one whose \lccode is nonzero.
        !          3494:     % An ``uppercase letter'' is one whose \lccode is both nonzero, and
        !          3495:     %   not equal to itself.
        !          3496:     % Otherwise, we assume it's a number.
        !          3497:     %
        !          3498:     % We need the \relax at the end of the \ifnum lines to stop TeX from
        !          3499:     % continuing to look for a <number>.
        !          3500:     %
        !          3501:     \ifnum\lccode\expandafter`\thearg=0\relax
        !          3502:       \numericenumerate % a number (we hope)
        !          3503:     \else
        !          3504:       % It's a letter.
        !          3505:       \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
        !          3506:         \lowercaseenumerate % lowercase letter
        !          3507:       \else
        !          3508:         \uppercaseenumerate % uppercase letter
        !          3509:       \fi
        !          3510:     \fi
        !          3511:   \else
        !          3512:     % Multiple tokens in the argument.  We hope it's a number.
        !          3513:     \numericenumerate
        !          3514:   \fi
        !          3515: }
        !          3516: 
        !          3517: % An @enumerate whose labels are integers.  The starting integer is
        !          3518: % given in \thearg.
        !          3519: %
        !          3520: \def\numericenumerate{%
        !          3521:   \itemno = \thearg
        !          3522:   \startenumeration{\the\itemno}%
        !          3523: }
        !          3524: 
        !          3525: % The starting (lowercase) letter is in \thearg.
        !          3526: \def\lowercaseenumerate{%
        !          3527:   \itemno = \expandafter`\thearg
        !          3528:   \startenumeration{%
        !          3529:     % Be sure we're not beyond the end of the alphabet.
        !          3530:     \ifnum\itemno=0
        !          3531:       \errmessage{No more lowercase letters in @enumerate; get a bigger
        !          3532:                   alphabet}%
        !          3533:     \fi
        !          3534:     \char\lccode\itemno
        !          3535:   }%
        !          3536: }
        !          3537: 
        !          3538: % The starting (uppercase) letter is in \thearg.
        !          3539: \def\uppercaseenumerate{%
        !          3540:   \itemno = \expandafter`\thearg
        !          3541:   \startenumeration{%
        !          3542:     % Be sure we're not beyond the end of the alphabet.
        !          3543:     \ifnum\itemno=0
        !          3544:       \errmessage{No more uppercase letters in @enumerate; get a bigger
        !          3545:                   alphabet}
        !          3546:     \fi
        !          3547:     \char\uccode\itemno
        !          3548:   }%
        !          3549: }
        !          3550: 
        !          3551: % Call \doitemize, adding a period to the first argument and supplying the
        !          3552: % common last two arguments.  Also subtract one from the initial value in
        !          3553: % \itemno, since @item increments \itemno.
        !          3554: %
        !          3555: \def\startenumeration#1{%
        !          3556:   \advance\itemno by -1
        !          3557:   \doitemize{#1.}\flushcr
        !          3558: }
        !          3559: 
        !          3560: % @alphaenumerate and @capsenumerate are abbreviations for giving an arg
        !          3561: % to @enumerate.
        !          3562: %
        !          3563: \def\alphaenumerate{\enumerate{a}}
        !          3564: \def\capsenumerate{\enumerate{A}}
        !          3565: \def\Ealphaenumerate{\Eenumerate}
        !          3566: \def\Ecapsenumerate{\Eenumerate}
        !          3567: 
        !          3568: 
        !          3569: % @multitable macros
        !          3570: % Amy Hendrickson, 8/18/94, 3/6/96
        !          3571: %
        !          3572: % @multitable ... @end multitable will make as many columns as desired.
        !          3573: % Contents of each column will wrap at width given in preamble.  Width
        !          3574: % can be specified either with sample text given in a template line,
        !          3575: % or in percent of \hsize, the current width of text on page.
        !          3576: 
        !          3577: % Table can continue over pages but will only break between lines.
        !          3578: 
        !          3579: % To make preamble:
        !          3580: %
        !          3581: % Either define widths of columns in terms of percent of \hsize:
        !          3582: %   @multitable @columnfractions .25 .3 .45
        !          3583: %   @item ...
        !          3584: %
        !          3585: %   Numbers following @columnfractions are the percent of the total
        !          3586: %   current hsize to be used for each column. You may use as many
        !          3587: %   columns as desired.
        !          3588: 
        !          3589: 
        !          3590: % Or use a template:
        !          3591: %   @multitable {Column 1 template} {Column 2 template} {Column 3 template}
        !          3592: %   @item ...
        !          3593: %   using the widest term desired in each column.
        !          3594: 
        !          3595: % Each new table line starts with @item, each subsequent new column
        !          3596: % starts with @tab. Empty columns may be produced by supplying @tab's
        !          3597: % with nothing between them for as many times as empty columns are needed,
        !          3598: % ie, @tab@tab@tab will produce two empty columns.
        !          3599: 
        !          3600: % @item, @tab do not need to be on their own lines, but it will not hurt
        !          3601: % if they are.
        !          3602: 
        !          3603: % Sample multitable:
        !          3604: 
        !          3605: %   @multitable {Column 1 template} {Column 2 template} {Column 3 template}
        !          3606: %   @item first col stuff @tab second col stuff @tab third col
        !          3607: %   @item
        !          3608: %   first col stuff
        !          3609: %   @tab
        !          3610: %   second col stuff
        !          3611: %   @tab
        !          3612: %   third col
        !          3613: %   @item first col stuff @tab second col stuff
        !          3614: %   @tab Many paragraphs of text may be used in any column.
        !          3615: %
        !          3616: %         They will wrap at the width determined by the template.
        !          3617: %   @item@tab@tab This will be in third column.
        !          3618: %   @end multitable
        !          3619: 
        !          3620: % Default dimensions may be reset by user.
        !          3621: % @multitableparskip is vertical space between paragraphs in table.
        !          3622: % @multitableparindent is paragraph indent in table.
        !          3623: % @multitablecolmargin is horizontal space to be left between columns.
        !          3624: % @multitablelinespace is space to leave between table items, baseline
        !          3625: %                                                            to baseline.
        !          3626: %   0pt means it depends on current normal line spacing.
        !          3627: %
        !          3628: \newskip\multitableparskip
        !          3629: \newskip\multitableparindent
        !          3630: \newdimen\multitablecolspace
        !          3631: \newskip\multitablelinespace
        !          3632: \multitableparskip=0pt
        !          3633: \multitableparindent=6pt
        !          3634: \multitablecolspace=12pt
        !          3635: \multitablelinespace=0pt
        !          3636: 
        !          3637: % Macros used to set up halign preamble:
        !          3638: %
        !          3639: \let\endsetuptable\relax
        !          3640: \def\xendsetuptable{\endsetuptable}
        !          3641: \let\columnfractions\relax
        !          3642: \def\xcolumnfractions{\columnfractions}
        !          3643: \newif\ifsetpercent
        !          3644: 
        !          3645: % #1 is the @columnfraction, usually a decimal number like .5, but might
        !          3646: % be just 1.  We just use it, whatever it is.
        !          3647: %
        !          3648: \def\pickupwholefraction#1 {%
        !          3649:   \global\advance\colcount by 1
        !          3650:   \expandafter\xdef\csname col\the\colcount\endcsname{#1\hsize}%
        !          3651:   \setuptable
        !          3652: }
        !          3653: 
        !          3654: \newcount\colcount
        !          3655: \def\setuptable#1{%
        !          3656:   \def\firstarg{#1}%
        !          3657:   \ifx\firstarg\xendsetuptable
        !          3658:     \let\go = \relax
        !          3659:   \else
        !          3660:     \ifx\firstarg\xcolumnfractions
        !          3661:       \global\setpercenttrue
        !          3662:     \else
        !          3663:       \ifsetpercent
        !          3664:          \let\go\pickupwholefraction
        !          3665:       \else
        !          3666:          \global\advance\colcount by 1
        !          3667:          \setbox0=\hbox{#1\unskip\space}% Add a normal word space as a
        !          3668:                    % separator; typically that is always in the input, anyway.
        !          3669:          \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
        !          3670:       \fi
        !          3671:     \fi
        !          3672:     \ifx\go\pickupwholefraction
        !          3673:       % Put the argument back for the \pickupwholefraction call, so
        !          3674:       % we'll always have a period there to be parsed.
        !          3675:       \def\go{\pickupwholefraction#1}%
        !          3676:     \else
        !          3677:       \let\go = \setuptable
        !          3678:     \fi%
        !          3679:   \fi
        !          3680:   \go
        !          3681: }
        !          3682: 
        !          3683: % multitable-only commands.
        !          3684: %
        !          3685: % @headitem starts a heading row, which we typeset in bold.
        !          3686: % Assignments have to be global since we are inside the implicit group
        !          3687: % of an alignment entry.  \everycr resets \everytab so we don't have to
        !          3688: % undo it ourselves.
        !          3689: \def\headitemfont{\b}% for people to use in the template row; not changeable
        !          3690: \def\headitem{%
        !          3691:   \checkenv\multitable
        !          3692:   \crcr
        !          3693:   \global\everytab={\bf}% can't use \headitemfont since the parsing differs
        !          3694:   \the\everytab % for the first item
        !          3695: }%
        !          3696: %
        !          3697: % A \tab used to include \hskip1sp.  But then the space in a template
        !          3698: % line is not enough.  That is bad.  So let's go back to just `&' until
        !          3699: % we again encounter the problem the 1sp was intended to solve.
        !          3700: %                                      --karl, nathan@acm.org, 20apr99.
        !          3701: \def\tab{\checkenv\multitable &\the\everytab}%
        !          3702: 
        !          3703: % @multitable ... @end multitable definitions:
        !          3704: %
        !          3705: \newtoks\everytab  % insert after every tab.
        !          3706: %
        !          3707: \envdef\multitable{%
        !          3708:   \vskip\parskip
        !          3709:   \startsavinginserts
        !          3710:   %
        !          3711:   % @item within a multitable starts a normal row.
        !          3712:   % We use \def instead of \let so that if one of the multitable entries
        !          3713:   % contains an @itemize, we don't choke on the \item (seen as \crcr aka
        !          3714:   % \endtemplate) expanding \doitemize.
        !          3715:   \def\item{\crcr}%
        !          3716:   %
        !          3717:   \tolerance=9500
        !          3718:   \hbadness=9500
        !          3719:   \setmultitablespacing
        !          3720:   \parskip=\multitableparskip
        !          3721:   \parindent=\multitableparindent
        !          3722:   \overfullrule=0pt
        !          3723:   \global\colcount=0
        !          3724:   %
        !          3725:   \everycr = {%
        !          3726:     \noalign{%
        !          3727:       \global\everytab={}%
        !          3728:       \global\colcount=0 % Reset the column counter.
        !          3729:       % Check for saved footnotes, etc.
        !          3730:       \checkinserts
        !          3731:       % Keeps underfull box messages off when table breaks over pages.
        !          3732:       %\filbreak
        !          3733:        % Maybe so, but it also creates really weird page breaks when the
        !          3734:        % table breaks over pages. Wouldn't \vfil be better?  Wait until the
        !          3735:        % problem manifests itself, so it can be fixed for real --karl.
        !          3736:     }%
        !          3737:   }%
        !          3738:   %
        !          3739:   \parsearg\domultitable
        !          3740: }
        !          3741: \def\domultitable#1{%
        !          3742:   % To parse everything between @multitable and @item:
        !          3743:   \setuptable#1 \endsetuptable
        !          3744:   %
        !          3745:   % This preamble sets up a generic column definition, which will
        !          3746:   % be used as many times as user calls for columns.
        !          3747:   % \vtop will set a single line and will also let text wrap and
        !          3748:   % continue for many paragraphs if desired.
        !          3749:   \halign\bgroup &%
        !          3750:     \global\advance\colcount by 1
        !          3751:     \multistrut
        !          3752:     \vtop{%
        !          3753:       % Use the current \colcount to find the correct column width:
        !          3754:       \hsize=\expandafter\csname col\the\colcount\endcsname
        !          3755:       %
        !          3756:       % In order to keep entries from bumping into each other
        !          3757:       % we will add a \leftskip of \multitablecolspace to all columns after
        !          3758:       % the first one.
        !          3759:       %
        !          3760:       % If a template has been used, we will add \multitablecolspace
        !          3761:       % to the width of each template entry.
        !          3762:       %
        !          3763:       % If the user has set preamble in terms of percent of \hsize we will
        !          3764:       % use that dimension as the width of the column, and the \leftskip
        !          3765:       % will keep entries from bumping into each other.  Table will start at
        !          3766:       % left margin and final column will justify at right margin.
        !          3767:       %
        !          3768:       % Make sure we don't inherit \rightskip from the outer environment.
        !          3769:       \rightskip=0pt
        !          3770:       \ifnum\colcount=1
        !          3771:        % The first column will be indented with the surrounding text.
        !          3772:        \advance\hsize by\leftskip
        !          3773:       \else
        !          3774:        \ifsetpercent \else
        !          3775:          % If user has not set preamble in terms of percent of \hsize
        !          3776:          % we will advance \hsize by \multitablecolspace.
        !          3777:          \advance\hsize by \multitablecolspace
        !          3778:        \fi
        !          3779:        % In either case we will make \leftskip=\multitablecolspace:
        !          3780:       \leftskip=\multitablecolspace
        !          3781:       \fi
        !          3782:       % Ignoring space at the beginning and end avoids an occasional spurious
        !          3783:       % blank line, when TeX decides to break the line at the space before the
        !          3784:       % box from the multistrut, so the strut ends up on a line by itself.
        !          3785:       % For example:
        !          3786:       % @multitable @columnfractions .11 .89
        !          3787:       % @item @code{#}
        !          3788:       % @tab Legal holiday which is valid in major parts of the whole country.
        !          3789:       % Is automatically provided with highlighting sequences respectively
        !          3790:       % marking characters.
        !          3791:       \noindent\ignorespaces##\unskip\multistrut
        !          3792:     }\cr
        !          3793: }
        !          3794: \def\Emultitable{%
        !          3795:   \crcr
        !          3796:   \egroup % end the \halign
        !          3797:   \global\setpercentfalse
        !          3798: }
        !          3799: 
        !          3800: \def\setmultitablespacing{%
        !          3801:   \def\multistrut{\strut}% just use the standard line spacing
        !          3802:   %
        !          3803:   % Compute \multitablelinespace (if not defined by user) for use in
        !          3804:   % \multitableparskip calculation.  We used define \multistrut based on
        !          3805:   % this, but (ironically) that caused the spacing to be off.
        !          3806:   % See bug-texinfo report from Werner Lemberg, 31 Oct 2004 12:52:20 +0100.
        !          3807: \ifdim\multitablelinespace=0pt
        !          3808: \setbox0=\vbox{X}\global\multitablelinespace=\the\baselineskip
        !          3809: \global\advance\multitablelinespace by-\ht0
        !          3810: \fi
        !          3811: %% Test to see if parskip is larger than space between lines of
        !          3812: %% table. If not, do nothing.
        !          3813: %%        If so, set to same dimension as multitablelinespace.
        !          3814: \ifdim\multitableparskip>\multitablelinespace
        !          3815: \global\multitableparskip=\multitablelinespace
        !          3816: \global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
        !          3817:                                       %% than skip between lines in the table.
        !          3818: \fi%
        !          3819: \ifdim\multitableparskip=0pt
        !          3820: \global\multitableparskip=\multitablelinespace
        !          3821: \global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
        !          3822:                                       %% than skip between lines in the table.
        !          3823: \fi}
        !          3824: 
        !          3825: 
        !          3826: \message{conditionals,}
        !          3827: 
        !          3828: % @iftex, @ifnotdocbook, @ifnothtml, @ifnotinfo, @ifnotplaintext,
        !          3829: % @ifnotxml always succeed.  They currently do nothing; we don't
        !          3830: % attempt to check whether the conditionals are properly nested.  But we
        !          3831: % have to remember that they are conditionals, so that @end doesn't
        !          3832: % attempt to close an environment group.
        !          3833: %
        !          3834: \def\makecond#1{%
        !          3835:   \expandafter\let\csname #1\endcsname = \relax
        !          3836:   \expandafter\let\csname iscond.#1\endcsname = 1
        !          3837: }
        !          3838: \makecond{iftex}
        !          3839: \makecond{ifnotdocbook}
        !          3840: \makecond{ifnothtml}
        !          3841: \makecond{ifnotinfo}
        !          3842: \makecond{ifnotplaintext}
        !          3843: \makecond{ifnotxml}
        !          3844: 
        !          3845: % Ignore @ignore, @ifhtml, @ifinfo, and the like.
        !          3846: %
        !          3847: \def\direntry{\doignore{direntry}}
        !          3848: \def\documentdescription{\doignore{documentdescription}}
        !          3849: \def\docbook{\doignore{docbook}}
        !          3850: \def\html{\doignore{html}}
        !          3851: \def\ifdocbook{\doignore{ifdocbook}}
        !          3852: \def\ifhtml{\doignore{ifhtml}}
        !          3853: \def\ifinfo{\doignore{ifinfo}}
        !          3854: \def\ifnottex{\doignore{ifnottex}}
        !          3855: \def\ifplaintext{\doignore{ifplaintext}}
        !          3856: \def\ifxml{\doignore{ifxml}}
        !          3857: \def\ignore{\doignore{ignore}}
        !          3858: \def\menu{\doignore{menu}}
        !          3859: \def\xml{\doignore{xml}}
        !          3860: 
        !          3861: % Ignore text until a line `@end #1', keeping track of nested conditionals.
        !          3862: %
        !          3863: % A count to remember the depth of nesting.
        !          3864: \newcount\doignorecount
        !          3865: 
        !          3866: \def\doignore#1{\begingroup
        !          3867:   % Scan in ``verbatim'' mode:
        !          3868:   \obeylines
        !          3869:   \catcode`\@ = \other
        !          3870:   \catcode`\{ = \other
        !          3871:   \catcode`\} = \other
        !          3872:   %
        !          3873:   % Make sure that spaces turn into tokens that match what \doignoretext wants.
        !          3874:   \spaceisspace
        !          3875:   %
        !          3876:   % Count number of #1's that we've seen.
        !          3877:   \doignorecount = 0
        !          3878:   %
        !          3879:   % Swallow text until we reach the matching `@end #1'.
        !          3880:   \dodoignore{#1}%
        !          3881: }
        !          3882: 
        !          3883: { \catcode`_=11 % We want to use \_STOP_ which cannot appear in texinfo source.
        !          3884:   \obeylines %
        !          3885:   %
        !          3886:   \gdef\dodoignore#1{%
        !          3887:     % #1 contains the command name as a string, e.g., `ifinfo'.
        !          3888:     %
        !          3889:     % Define a command to find the next `@end #1'.
        !          3890:     \long\def\doignoretext##1^^M@end #1{%
        !          3891:       \doignoretextyyy##1^^M@#1\_STOP_}%
        !          3892:     %
        !          3893:     % And this command to find another #1 command, at the beginning of a
        !          3894:     % line.  (Otherwise, we would consider a line `@c @ifset', for
        !          3895:     % example, to count as an @ifset for nesting.)
        !          3896:     \long\def\doignoretextyyy##1^^M@#1##2\_STOP_{\doignoreyyy{##2}\_STOP_}%
        !          3897:     %
        !          3898:     % And now expand that command.
        !          3899:     \doignoretext ^^M%
        !          3900:   }%
        !          3901: }
        !          3902: 
        !          3903: \def\doignoreyyy#1{%
        !          3904:   \def\temp{#1}%
        !          3905:   \ifx\temp\empty                      % Nothing found.
        !          3906:     \let\next\doignoretextzzz
        !          3907:   \else                                        % Found a nested condition, ...
        !          3908:     \advance\doignorecount by 1
        !          3909:     \let\next\doignoretextyyy          % ..., look for another.
        !          3910:     % If we're here, #1 ends with ^^M\ifinfo (for example).
        !          3911:   \fi
        !          3912:   \next #1% the token \_STOP_ is present just after this macro.
        !          3913: }
        !          3914: 
        !          3915: % We have to swallow the remaining "\_STOP_".
        !          3916: %
        !          3917: \def\doignoretextzzz#1{%
        !          3918:   \ifnum\doignorecount = 0     % We have just found the outermost @end.
        !          3919:     \let\next\enddoignore
        !          3920:   \else                                % Still inside a nested condition.
        !          3921:     \advance\doignorecount by -1
        !          3922:     \let\next\doignoretext      % Look for the next @end.
        !          3923:   \fi
        !          3924:   \next
        !          3925: }
        !          3926: 
        !          3927: % Finish off ignored text.
        !          3928: { \obeylines%
        !          3929:   % Ignore anything after the last `@end #1'; this matters in verbatim
        !          3930:   % environments, where otherwise the newline after an ignored conditional
        !          3931:   % would result in a blank line in the output.
        !          3932:   \gdef\enddoignore#1^^M{\endgroup\ignorespaces}%
        !          3933: }
        !          3934: 
        !          3935: 
        !          3936: % @set VAR sets the variable VAR to an empty value.
        !          3937: % @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE.
        !          3938: %
        !          3939: % Since we want to separate VAR from REST-OF-LINE (which might be
        !          3940: % empty), we can't just use \parsearg; we have to insert a space of our
        !          3941: % own to delimit the rest of the line, and then take it out again if we
        !          3942: % didn't need it.
        !          3943: % We rely on the fact that \parsearg sets \catcode`\ =10.
        !          3944: %
        !          3945: \parseargdef\set{\setyyy#1 \endsetyyy}
        !          3946: \def\setyyy#1 #2\endsetyyy{%
        !          3947:   {%
        !          3948:     \makevalueexpandable
        !          3949:     \def\temp{#2}%
        !          3950:     \edef\next{\gdef\makecsname{SET#1}}%
        !          3951:     \ifx\temp\empty
        !          3952:       \next{}%
        !          3953:     \else
        !          3954:       \setzzz#2\endsetzzz
        !          3955:     \fi
        !          3956:   }%
        !          3957: }
        !          3958: % Remove the trailing space \setxxx inserted.
        !          3959: \def\setzzz#1 \endsetzzz{\next{#1}}
        !          3960: 
        !          3961: % @clear VAR clears (i.e., unsets) the variable VAR.
        !          3962: %
        !          3963: \parseargdef\clear{%
        !          3964:   {%
        !          3965:     \makevalueexpandable
        !          3966:     \global\expandafter\let\csname SET#1\endcsname=\relax
        !          3967:   }%
        !          3968: }
        !          3969: 
        !          3970: % @value{foo} gets the text saved in variable foo.
        !          3971: \def\value{\begingroup\makevalueexpandable\valuexxx}
        !          3972: \def\valuexxx#1{\expandablevalue{#1}\endgroup}
        !          3973: {
        !          3974:   \catcode`\- = \active \catcode`\_ = \active
        !          3975:   %
        !          3976:   \gdef\makevalueexpandable{%
        !          3977:     \let\value = \expandablevalue
        !          3978:     % We don't want these characters active, ...
        !          3979:     \catcode`\-=\other \catcode`\_=\other
        !          3980:     % ..., but we might end up with active ones in the argument if
        !          3981:     % we're called from @code, as @code{@value{foo-bar_}}, though.
        !          3982:     % So \let them to their normal equivalents.
        !          3983:     \let-\realdash \let_\normalunderscore
        !          3984:   }
        !          3985: }
        !          3986: 
        !          3987: % We have this subroutine so that we can handle at least some @value's
        !          3988: % properly in indexes (we call \makevalueexpandable in \indexdummies).
        !          3989: % The command has to be fully expandable (if the variable is set), since
        !          3990: % the result winds up in the index file.  This means that if the
        !          3991: % variable's value contains other Texinfo commands, it's almost certain
        !          3992: % it will fail (although perhaps we could fix that with sufficient work
        !          3993: % to do a one-level expansion on the result, instead of complete).
        !          3994: %
        !          3995: \def\expandablevalue#1{%
        !          3996:   \expandafter\ifx\csname SET#1\endcsname\relax
        !          3997:     {[No value for ``#1'']}%
        !          3998:     \message{Variable `#1', used in @value, is not set.}%
        !          3999:   \else
        !          4000:     \csname SET#1\endcsname
        !          4001:   \fi
        !          4002: }
        !          4003: 
        !          4004: % @ifset VAR ... @end ifset reads the `...' iff VAR has been defined
        !          4005: % with @set.
        !          4006: %
        !          4007: % To get special treatment of `@end ifset,' call \makeond and the redefine.
        !          4008: %
        !          4009: \makecond{ifset}
        !          4010: \def\ifset{\parsearg{\doifset{\let\next=\ifsetfail}}}
        !          4011: \def\doifset#1#2{%
        !          4012:   {%
        !          4013:     \makevalueexpandable
        !          4014:     \let\next=\empty
        !          4015:     \expandafter\ifx\csname SET#2\endcsname\relax
        !          4016:       #1% If not set, redefine \next.
        !          4017:     \fi
        !          4018:     \expandafter
        !          4019:   }\next
        !          4020: }
        !          4021: \def\ifsetfail{\doignore{ifset}}
        !          4022: 
        !          4023: % @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been
        !          4024: % defined with @set, or has been undefined with @clear.
        !          4025: %
        !          4026: % The `\else' inside the `\doifset' parameter is a trick to reuse the
        !          4027: % above code: if the variable is not set, do nothing, if it is set,
        !          4028: % then redefine \next to \ifclearfail.
        !          4029: %
        !          4030: \makecond{ifclear}
        !          4031: \def\ifclear{\parsearg{\doifset{\else \let\next=\ifclearfail}}}
        !          4032: \def\ifclearfail{\doignore{ifclear}}
        !          4033: 
        !          4034: % @dircategory CATEGORY  -- specify a category of the dir file
        !          4035: % which this file should belong to.  Ignore this in TeX.
        !          4036: \let\dircategory=\comment
        !          4037: 
        !          4038: % @defininfoenclose.
        !          4039: \let\definfoenclose=\comment
        !          4040: 
        !          4041: 
        !          4042: \message{indexing,}
        !          4043: % Index generation facilities
        !          4044: 
        !          4045: % Define \newwrite to be identical to plain tex's \newwrite
        !          4046: % except not \outer, so it can be used within macros and \if's.
        !          4047: \edef\newwrite{\makecsname{ptexnewwrite}}
        !          4048: 
        !          4049: % \newindex {foo} defines an index named foo.
        !          4050: % It automatically defines \fooindex such that
        !          4051: % \fooindex ...rest of line... puts an entry in the index foo.
        !          4052: % It also defines \fooindfile to be the number of the output channel for
        !          4053: % the file that accumulates this index.  The file's extension is foo.
        !          4054: % The name of an index should be no more than 2 characters long
        !          4055: % for the sake of vms.
        !          4056: %
        !          4057: \def\newindex#1{%
        !          4058:   \iflinks
        !          4059:     \expandafter\newwrite \csname#1indfile\endcsname
        !          4060:     \openout \csname#1indfile\endcsname \jobname.#1 % Open the file
        !          4061:   \fi
        !          4062:   \expandafter\xdef\csname#1index\endcsname{%     % Define @#1index
        !          4063:     \noexpand\doindex{#1}}
        !          4064: }
        !          4065: 
        !          4066: % @defindex foo  ==  \newindex{foo}
        !          4067: %
        !          4068: \def\defindex{\parsearg\newindex}
        !          4069: 
        !          4070: % Define @defcodeindex, like @defindex except put all entries in @code.
        !          4071: %
        !          4072: \def\defcodeindex{\parsearg\newcodeindex}
        !          4073: %
        !          4074: \def\newcodeindex#1{%
        !          4075:   \iflinks
        !          4076:     \expandafter\newwrite \csname#1indfile\endcsname
        !          4077:     \openout \csname#1indfile\endcsname \jobname.#1
        !          4078:   \fi
        !          4079:   \expandafter\xdef\csname#1index\endcsname{%
        !          4080:     \noexpand\docodeindex{#1}}%
        !          4081: }
        !          4082: 
        !          4083: 
        !          4084: % @synindex foo bar    makes index foo feed into index bar.
        !          4085: % Do this instead of @defindex foo if you don't want it as a separate index.
        !          4086: %
        !          4087: % @syncodeindex foo bar   similar, but put all entries made for index foo
        !          4088: % inside @code.
        !          4089: %
        !          4090: \def\synindex#1 #2 {\dosynindex\doindex{#1}{#2}}
        !          4091: \def\syncodeindex#1 #2 {\dosynindex\docodeindex{#1}{#2}}
        !          4092: 
        !          4093: % #1 is \doindex or \docodeindex, #2 the index getting redefined (foo),
        !          4094: % #3 the target index (bar).
        !          4095: \def\dosynindex#1#2#3{%
        !          4096:   % Only do \closeout if we haven't already done it, else we'll end up
        !          4097:   % closing the target index.
        !          4098:   \expandafter \ifx\csname donesynindex#2\endcsname \relax
        !          4099:     % The \closeout helps reduce unnecessary open files; the limit on the
        !          4100:     % Acorn RISC OS is a mere 16 files.
        !          4101:     \expandafter\closeout\csname#2indfile\endcsname
        !          4102:     \expandafter\let\csname donesynindex#2\endcsname = 1
        !          4103:   \fi
        !          4104:   % redefine \fooindfile:
        !          4105:   \expandafter\let\expandafter\temp\expandafter=\csname#3indfile\endcsname
        !          4106:   \expandafter\let\csname#2indfile\endcsname=\temp
        !          4107:   % redefine \fooindex:
        !          4108:   \expandafter\xdef\csname#2index\endcsname{\noexpand#1{#3}}%
        !          4109: }
        !          4110: 
        !          4111: % Define \doindex, the driver for all \fooindex macros.
        !          4112: % Argument #1 is generated by the calling \fooindex macro,
        !          4113: %  and it is "foo", the name of the index.
        !          4114: 
        !          4115: % \doindex just uses \parsearg; it calls \doind for the actual work.
        !          4116: % This is because \doind is more useful to call from other macros.
        !          4117: 
        !          4118: % There is also \dosubind {index}{topic}{subtopic}
        !          4119: % which makes an entry in a two-level index such as the operation index.
        !          4120: 
        !          4121: \def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
        !          4122: \def\singleindexer #1{\doind{\indexname}{#1}}
        !          4123: 
        !          4124: % like the previous two, but they put @code around the argument.
        !          4125: \def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
        !          4126: \def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
        !          4127: 
        !          4128: % Take care of Texinfo commands that can appear in an index entry.
        !          4129: % Since there are some commands we want to expand, and others we don't,
        !          4130: % we have to laboriously prevent expansion for those that we don't.
        !          4131: %
        !          4132: \def\indexdummies{%
        !          4133:   \escapechar = `\\     % use backslash in output files.
        !          4134:   \def\@{@}% change to @@ when we switch to @ as escape char in index files.
        !          4135:   \def\ {\realbackslash\space }%
        !          4136:   %
        !          4137:   % Need these in case \tex is in effect and \{ is a \delimiter again.
        !          4138:   % But can't use \lbracecmd and \rbracecmd because texindex assumes
        !          4139:   % braces and backslashes are used only as delimiters.
        !          4140:   \let\{ = \mylbrace
        !          4141:   \let\} = \myrbrace
        !          4142:   %
        !          4143:   % I don't entirely understand this, but when an index entry is
        !          4144:   % generated from a macro call, the \endinput which \scanmacro inserts
        !          4145:   % causes processing to be prematurely terminated.  This is,
        !          4146:   % apparently, because \indexsorttmp is fully expanded, and \endinput
        !          4147:   % is an expandable command.  The redefinition below makes \endinput
        !          4148:   % disappear altogether for that purpose -- although logging shows that
        !          4149:   % processing continues to some further point.  On the other hand, it
        !          4150:   % seems \endinput does not hurt in the printed index arg, since that
        !          4151:   % is still getting written without apparent harm.
        !          4152:   %
        !          4153:   % Sample source (mac-idx3.tex, reported by Graham Percival to
        !          4154:   % help-texinfo, 22may06):
        !          4155:   % @macro funindex {WORD}
        !          4156:   % @findex xyz
        !          4157:   % @end macro
        !          4158:   % ...
        !          4159:   % @funindex commtest
        !          4160:   %
        !          4161:   % The above is not enough to reproduce the bug, but it gives the flavor.
        !          4162:   %
        !          4163:   % Sample whatsit resulting:
        !          4164:   % .@write3{\entry{xyz}{@folio }{@code {xyz@endinput }}}
        !          4165:   %
        !          4166:   % So:
        !          4167:   \let\endinput = \empty
        !          4168:   %
        !          4169:   % Do the redefinitions.
        !          4170:   \commondummies
        !          4171: }
        !          4172: 
        !          4173: % For the aux and toc files, @ is the escape character.  So we want to
        !          4174: % redefine everything using @ as the escape character (instead of
        !          4175: % \realbackslash, still used for index files).  When everything uses @,
        !          4176: % this will be simpler.
        !          4177: %
        !          4178: \def\atdummies{%
        !          4179:   \def\@{@@}%
        !          4180:   \def\ {@ }%
        !          4181:   \let\{ = \lbraceatcmd
        !          4182:   \let\} = \rbraceatcmd
        !          4183:   %
        !          4184:   % Do the redefinitions.
        !          4185:   \commondummies
        !          4186:   \otherbackslash
        !          4187: }
        !          4188: 
        !          4189: % Called from \indexdummies and \atdummies.
        !          4190: %
        !          4191: \def\commondummies{%
        !          4192:   %
        !          4193:   % \definedummyword defines \#1 as \string\#1\space, thus effectively
        !          4194:   % preventing its expansion.  This is used only for control% words,
        !          4195:   % not control letters, because the \space would be incorrect for
        !          4196:   % control characters, but is needed to separate the control word
        !          4197:   % from whatever follows.
        !          4198:   %
        !          4199:   % For control letters, we have \definedummyletter, which omits the
        !          4200:   % space.
        !          4201:   %
        !          4202:   % These can be used both for control words that take an argument and
        !          4203:   % those that do not.  If it is followed by {arg} in the input, then
        !          4204:   % that will dutifully get written to the index (or wherever).
        !          4205:   %
        !          4206:   \def\definedummyword  ##1{\def##1{\string##1\space}}%
        !          4207:   \def\definedummyletter##1{\def##1{\string##1}}%
        !          4208:   \let\definedummyaccent\definedummyletter
        !          4209:   %
        !          4210:   \commondummiesnofonts
        !          4211:   %
        !          4212:   \definedummyletter\_%
        !          4213:   %
        !          4214:   % Non-English letters.
        !          4215:   \definedummyword\AA
        !          4216:   \definedummyword\AE
        !          4217:   \definedummyword\DH
        !          4218:   \definedummyword\L
        !          4219:   \definedummyword\O
        !          4220:   \definedummyword\OE
        !          4221:   \definedummyword\TH
        !          4222:   \definedummyword\aa
        !          4223:   \definedummyword\ae
        !          4224:   \definedummyword\dh
        !          4225:   \definedummyword\exclamdown
        !          4226:   \definedummyword\l
        !          4227:   \definedummyword\o
        !          4228:   \definedummyword\oe
        !          4229:   \definedummyword\ordf
        !          4230:   \definedummyword\ordm
        !          4231:   \definedummyword\questiondown
        !          4232:   \definedummyword\ss
        !          4233:   \definedummyword\th
        !          4234:   %
        !          4235:   % Although these internal commands shouldn't show up, sometimes they do.
        !          4236:   \definedummyword\bf
        !          4237:   \definedummyword\gtr
        !          4238:   \definedummyword\hat
        !          4239:   \definedummyword\less
        !          4240:   \definedummyword\sf
        !          4241:   \definedummyword\sl
        !          4242:   \definedummyword\tclose
        !          4243:   \definedummyword\tt
        !          4244:   %
        !          4245:   \definedummyword\LaTeX
        !          4246:   \definedummyword\TeX
        !          4247:   %
        !          4248:   % Assorted special characters.
        !          4249:   \definedummyword\bullet
        !          4250:   \definedummyword\comma
        !          4251:   \definedummyword\copyright
        !          4252:   \definedummyword\registeredsymbol
        !          4253:   \definedummyword\dots
        !          4254:   \definedummyword\enddots
        !          4255:   \definedummyword\equiv
        !          4256:   \definedummyword\error
        !          4257:   \definedummyword\euro
        !          4258:   \definedummyword\guillemetleft
        !          4259:   \definedummyword\guillemetright
        !          4260:   \definedummyword\guilsinglleft
        !          4261:   \definedummyword\guilsinglright
        !          4262:   \definedummyword\expansion
        !          4263:   \definedummyword\minus
        !          4264:   \definedummyword\ogonek
        !          4265:   \definedummyword\pounds
        !          4266:   \definedummyword\point
        !          4267:   \definedummyword\print
        !          4268:   \definedummyword\quotedblbase
        !          4269:   \definedummyword\quotedblleft
        !          4270:   \definedummyword\quotedblright
        !          4271:   \definedummyword\quoteleft
        !          4272:   \definedummyword\quoteright
        !          4273:   \definedummyword\quotesinglbase
        !          4274:   \definedummyword\result
        !          4275:   \definedummyword\textdegree
        !          4276:   %
        !          4277:   % We want to disable all macros so that they are not expanded by \write.
        !          4278:   \macrolist
        !          4279:   %
        !          4280:   \normalturnoffactive
        !          4281:   %
        !          4282:   % Handle some cases of @value -- where it does not contain any
        !          4283:   % (non-fully-expandable) commands.
        !          4284:   \makevalueexpandable
        !          4285: }
        !          4286: 
        !          4287: % \commondummiesnofonts: common to \commondummies and \indexnofonts.
        !          4288: %
        !          4289: \def\commondummiesnofonts{%
        !          4290:   % Control letters and accents.
        !          4291:   \definedummyletter\!%
        !          4292:   \definedummyaccent\"%
        !          4293:   \definedummyaccent\'%
        !          4294:   \definedummyletter\*%
        !          4295:   \definedummyaccent\,%
        !          4296:   \definedummyletter\.%
        !          4297:   \definedummyletter\/%
        !          4298:   \definedummyletter\:%
        !          4299:   \definedummyaccent\=%
        !          4300:   \definedummyletter\?%
        !          4301:   \definedummyaccent\^%
        !          4302:   \definedummyaccent\`%
        !          4303:   \definedummyaccent\~%
        !          4304:   \definedummyword\u
        !          4305:   \definedummyword\v
        !          4306:   \definedummyword\H
        !          4307:   \definedummyword\dotaccent
        !          4308:   \definedummyword\ogonek
        !          4309:   \definedummyword\ringaccent
        !          4310:   \definedummyword\tieaccent
        !          4311:   \definedummyword\ubaraccent
        !          4312:   \definedummyword\udotaccent
        !          4313:   \definedummyword\dotless
        !          4314:   %
        !          4315:   % Texinfo font commands.
        !          4316:   \definedummyword\b
        !          4317:   \definedummyword\i
        !          4318:   \definedummyword\r
        !          4319:   \definedummyword\sc
        !          4320:   \definedummyword\t
        !          4321:   %
        !          4322:   % Commands that take arguments.
        !          4323:   \definedummyword\acronym
        !          4324:   \definedummyword\cite
        !          4325:   \definedummyword\code
        !          4326:   \definedummyword\command
        !          4327:   \definedummyword\dfn
        !          4328:   \definedummyword\email
        !          4329:   \definedummyword\emph
        !          4330:   \definedummyword\env
        !          4331:   \definedummyword\file
        !          4332:   \definedummyword\kbd
        !          4333:   \definedummyword\key
        !          4334:   \definedummyword\math
        !          4335:   \definedummyword\option
        !          4336:   \definedummyword\pxref
        !          4337:   \definedummyword\ref
        !          4338:   \definedummyword\samp
        !          4339:   \definedummyword\strong
        !          4340:   \definedummyword\tie
        !          4341:   \definedummyword\uref
        !          4342:   \definedummyword\url
        !          4343:   \definedummyword\var
        !          4344:   \definedummyword\verb
        !          4345:   \definedummyword\w
        !          4346:   \definedummyword\xref
        !          4347: }
        !          4348: 
        !          4349: % \indexnofonts is used when outputting the strings to sort the index
        !          4350: % by, and when constructing control sequence names.  It eliminates all
        !          4351: % control sequences and just writes whatever the best ASCII sort string
        !          4352: % would be for a given command (usually its argument).
        !          4353: %
        !          4354: \def\indexnofonts{%
        !          4355:   % Accent commands should become @asis.
        !          4356:   \def\definedummyaccent##1{\let##1\asis}%
        !          4357:   % We can just ignore other control letters.
        !          4358:   \def\definedummyletter##1{\let##1\empty}%
        !          4359:   % Hopefully, all control words can become @asis.
        !          4360:   \let\definedummyword\definedummyaccent
        !          4361:   %
        !          4362:   \commondummiesnofonts
        !          4363:   %
        !          4364:   % Don't no-op \tt, since it isn't a user-level command
        !          4365:   % and is used in the definitions of the active chars like <, >, |, etc.
        !          4366:   % Likewise with the other plain tex font commands.
        !          4367:   %\let\tt=\asis
        !          4368:   %
        !          4369:   \def\ { }%
        !          4370:   \def\@{@}%
        !          4371:   % how to handle braces?
        !          4372:   \def\_{\normalunderscore}%
        !          4373:   %
        !          4374:   % Non-English letters.
        !          4375:   \def\AA{AA}%
        !          4376:   \def\AE{AE}%
        !          4377:   \def\DH{DZZ}%
        !          4378:   \def\L{L}%
        !          4379:   \def\OE{OE}%
        !          4380:   \def\O{O}%
        !          4381:   \def\TH{ZZZ}%
        !          4382:   \def\aa{aa}%
        !          4383:   \def\ae{ae}%
        !          4384:   \def\dh{dzz}%
        !          4385:   \def\exclamdown{!}%
        !          4386:   \def\l{l}%
        !          4387:   \def\oe{oe}%
        !          4388:   \def\ordf{a}%
        !          4389:   \def\ordm{o}%
        !          4390:   \def\o{o}%
        !          4391:   \def\questiondown{?}%
        !          4392:   \def\ss{ss}%
        !          4393:   \def\th{zzz}%
        !          4394:   %
        !          4395:   \def\LaTeX{LaTeX}%
        !          4396:   \def\TeX{TeX}%
        !          4397:   %
        !          4398:   % Assorted special characters.
        !          4399:   % (The following {} will end up in the sort string, but that's ok.)
        !          4400:   \def\bullet{bullet}%
        !          4401:   \def\comma{,}%
        !          4402:   \def\copyright{copyright}%
        !          4403:   \def\dots{...}%
        !          4404:   \def\enddots{...}%
        !          4405:   \def\equiv{==}%
        !          4406:   \def\error{error}%
        !          4407:   \def\euro{euro}%
        !          4408:   \def\expansion{==>}%
        !          4409:   \def\guillemetleft{<<}%
        !          4410:   \def\guillemetright{>>}%
        !          4411:   \def\guilsinglleft{<}%
        !          4412:   \def\guilsinglright{>}%
        !          4413:   \def\minus{-}%
        !          4414:   \def\point{.}%
        !          4415:   \def\pounds{pounds}%
        !          4416:   \def\print{-|}%
        !          4417:   \def\quotedblbase{"}%
        !          4418:   \def\quotedblleft{"}%
        !          4419:   \def\quotedblright{"}%
        !          4420:   \def\quoteleft{`}%
        !          4421:   \def\quoteright{'}%
        !          4422:   \def\quotesinglbase{,}%
        !          4423:   \def\registeredsymbol{R}%
        !          4424:   \def\result{=>}%
        !          4425:   \def\textdegree{o}%
        !          4426:   %
        !          4427:   % We need to get rid of all macros, leaving only the arguments (if present).
        !          4428:   % Of course this is not nearly correct, but it is the best we can do for now.
        !          4429:   % makeinfo does not expand macros in the argument to @deffn, which ends up
        !          4430:   % writing an index entry, and texindex isn't prepared for an index sort entry
        !          4431:   % that starts with \.
        !          4432:   %
        !          4433:   % Since macro invocations are followed by braces, we can just redefine them
        !          4434:   % to take a single TeX argument.  The case of a macro invocation that
        !          4435:   % goes to end-of-line is not handled.
        !          4436:   %
        !          4437:   \macrolist
        !          4438: }
        !          4439: 
        !          4440: \let\indexbackslash=0  %overridden during \printindex.
        !          4441: \let\SETmarginindex=\relax % put index entries in margin (undocumented)?
        !          4442: 
        !          4443: % Most index entries go through here, but \dosubind is the general case.
        !          4444: % #1 is the index name, #2 is the entry text.
        !          4445: \def\doind#1#2{\dosubind{#1}{#2}{}}
        !          4446: 
        !          4447: % Workhorse for all \fooindexes.
        !          4448: % #1 is name of index, #2 is stuff to put there, #3 is subentry --
        !          4449: % empty if called from \doind, as we usually are (the main exception
        !          4450: % is with most defuns, which call us directly).
        !          4451: %
        !          4452: \def\dosubind#1#2#3{%
        !          4453:   \iflinks
        !          4454:   {%
        !          4455:     % Store the main index entry text (including the third arg).
        !          4456:     \toks0 = {#2}%
        !          4457:     % If third arg is present, precede it with a space.
        !          4458:     \def\thirdarg{#3}%
        !          4459:     \ifx\thirdarg\empty \else
        !          4460:       \toks0 = \expandafter{\the\toks0 \space #3}%
        !          4461:     \fi
        !          4462:     %
        !          4463:     \edef\writeto{\csname#1indfile\endcsname}%
        !          4464:     %
        !          4465:     \safewhatsit\dosubindwrite
        !          4466:   }%
        !          4467:   \fi
        !          4468: }
        !          4469: 
        !          4470: % Write the entry in \toks0 to the index file:
        !          4471: %
        !          4472: \def\dosubindwrite{%
        !          4473:   % Put the index entry in the margin if desired.
        !          4474:   \ifx\SETmarginindex\relax\else
        !          4475:     \insert\margin{\hbox{\vrule height8pt depth3pt width0pt \the\toks0}}%
        !          4476:   \fi
        !          4477:   %
        !          4478:   % Remember, we are within a group.
        !          4479:   \indexdummies % Must do this here, since \bf, etc expand at this stage
        !          4480:   \def\backslashcurfont{\indexbackslash}% \indexbackslash isn't defined now
        !          4481:       % so it will be output as is; and it will print as backslash.
        !          4482:   %
        !          4483:   % Process the index entry with all font commands turned off, to
        !          4484:   % get the string to sort by.
        !          4485:   {\indexnofonts
        !          4486:    \edef\temp{\the\toks0}% need full expansion
        !          4487:    \xdef\indexsorttmp{\temp}%
        !          4488:   }%
        !          4489:   %
        !          4490:   % Set up the complete index entry, with both the sort key and
        !          4491:   % the original text, including any font commands.  We write
        !          4492:   % three arguments to \entry to the .?? file (four in the
        !          4493:   % subentry case), texindex reduces to two when writing the .??s
        !          4494:   % sorted result.
        !          4495:   \edef\temp{%
        !          4496:     \write\writeto{%
        !          4497:       \string\entry{\indexsorttmp}{\noexpand\folio}{\the\toks0}}%
        !          4498:   }%
        !          4499:   \temp
        !          4500: }
        !          4501: 
        !          4502: % Take care of unwanted page breaks/skips around a whatsit:
        !          4503: %
        !          4504: % If a skip is the last thing on the list now, preserve it
        !          4505: % by backing up by \lastskip, doing the \write, then inserting
        !          4506: % the skip again.  Otherwise, the whatsit generated by the
        !          4507: % \write or \pdfdest will make \lastskip zero.  The result is that
        !          4508: % sequences like this:
        !          4509: % @end defun
        !          4510: % @tindex whatever
        !          4511: % @defun ...
        !          4512: % will have extra space inserted, because the \medbreak in the
        !          4513: % start of the @defun won't see the skip inserted by the @end of
        !          4514: % the previous defun.
        !          4515: %
        !          4516: % But don't do any of this if we're not in vertical mode.  We
        !          4517: % don't want to do a \vskip and prematurely end a paragraph.
        !          4518: %
        !          4519: % Avoid page breaks due to these extra skips, too.
        !          4520: %
        !          4521: % But wait, there is a catch there:
        !          4522: % We'll have to check whether \lastskip is zero skip.  \ifdim is not
        !          4523: % sufficient for this purpose, as it ignores stretch and shrink parts
        !          4524: % of the skip.  The only way seems to be to check the textual
        !          4525: % representation of the skip.
        !          4526: %
        !          4527: % The following is almost like \def\zeroskipmacro{0.0pt} except that
        !          4528: % the ``p'' and ``t'' characters have catcode \other, not 11 (letter).
        !          4529: %
        !          4530: \edef\zeroskipmacro{\expandafter\the\csname z@skip\endcsname}
        !          4531: %
        !          4532: \newskip\whatsitskip
        !          4533: \newcount\whatsitpenalty
        !          4534: %
        !          4535: % ..., ready, GO:
        !          4536: %
        !          4537: \def\safewhatsit#1{%
        !          4538: \ifhmode
        !          4539:   #1%
        !          4540: \else
        !          4541:   % \lastskip and \lastpenalty cannot both be nonzero simultaneously.
        !          4542:   \whatsitskip = \lastskip
        !          4543:   \edef\lastskipmacro{\the\lastskip}%
        !          4544:   \whatsitpenalty = \lastpenalty
        !          4545:   %
        !          4546:   % If \lastskip is nonzero, that means the last item was a
        !          4547:   % skip.  And since a skip is discardable, that means this
        !          4548:   % -\whatsitskip glue we're inserting is preceded by a
        !          4549:   % non-discardable item, therefore it is not a potential
        !          4550:   % breakpoint, therefore no \nobreak needed.
        !          4551:   \ifx\lastskipmacro\zeroskipmacro
        !          4552:   \else
        !          4553:     \vskip-\whatsitskip
        !          4554:   \fi
        !          4555:   %
        !          4556:   #1%
        !          4557:   %
        !          4558:   \ifx\lastskipmacro\zeroskipmacro
        !          4559:     % If \lastskip was zero, perhaps the last item was a penalty, and
        !          4560:     % perhaps it was >=10000, e.g., a \nobreak.  In that case, we want
        !          4561:     % to re-insert the same penalty (values >10000 are used for various
        !          4562:     % signals); since we just inserted a non-discardable item, any
        !          4563:     % following glue (such as a \parskip) would be a breakpoint.  For example:
        !          4564:     %
        !          4565:     %   @deffn deffn-whatever
        !          4566:     %   @vindex index-whatever
        !          4567:     %   Description.
        !          4568:     % would allow a break between the index-whatever whatsit
        !          4569:     % and the "Description." paragraph.
        !          4570:     \ifnum\whatsitpenalty>9999 \penalty\whatsitpenalty \fi
        !          4571:   \else
        !          4572:     % On the other hand, if we had a nonzero \lastskip,
        !          4573:     % this make-up glue would be preceded by a non-discardable item
        !          4574:     % (the whatsit from the \write), so we must insert a \nobreak.
        !          4575:     \nobreak\vskip\whatsitskip
        !          4576:   \fi
        !          4577: \fi
        !          4578: }
        !          4579: 
        !          4580: % The index entry written in the file actually looks like
        !          4581: %  \entry {sortstring}{page}{topic}
        !          4582: % or
        !          4583: %  \entry {sortstring}{page}{topic}{subtopic}
        !          4584: % The texindex program reads in these files and writes files
        !          4585: % containing these kinds of lines:
        !          4586: %  \initial {c}
        !          4587: %     before the first topic whose initial is c
        !          4588: %  \entry {topic}{pagelist}
        !          4589: %     for a topic that is used without subtopics
        !          4590: %  \primary {topic}
        !          4591: %     for the beginning of a topic that is used with subtopics
        !          4592: %  \secondary {subtopic}{pagelist}
        !          4593: %     for each subtopic.
        !          4594: 
        !          4595: % Define the user-accessible indexing commands
        !          4596: % @findex, @vindex, @kindex, @cindex.
        !          4597: 
        !          4598: \def\findex {\fnindex}
        !          4599: \def\kindex {\kyindex}
        !          4600: \def\cindex {\cpindex}
        !          4601: \def\vindex {\vrindex}
        !          4602: \def\tindex {\tpindex}
        !          4603: \def\pindex {\pgindex}
        !          4604: 
        !          4605: \def\cindexsub {\begingroup\obeylines\cindexsub}
        !          4606: {\obeylines %
        !          4607: \gdef\cindexsub "#1" #2^^M{\endgroup %
        !          4608: \dosubind{cp}{#2}{#1}}}
        !          4609: 
        !          4610: % Define the macros used in formatting output of the sorted index material.
        !          4611: 
        !          4612: % @printindex causes a particular index (the ??s file) to get printed.
        !          4613: % It does not print any chapter heading (usually an @unnumbered).
        !          4614: %
        !          4615: \parseargdef\printindex{\begingroup
        !          4616:   \dobreak \chapheadingskip{10000}%
        !          4617:   %
        !          4618:   \smallfonts \rm
        !          4619:   \tolerance = 9500
        !          4620:   \plainfrenchspacing
        !          4621:   \everypar = {}% don't want the \kern\-parindent from indentation suppression.
        !          4622:   %
        !          4623:   % See if the index file exists and is nonempty.
        !          4624:   % Change catcode of @ here so that if the index file contains
        !          4625:   % \initial {@}
        !          4626:   % as its first line, TeX doesn't complain about mismatched braces
        !          4627:   % (because it thinks @} is a control sequence).
        !          4628:   \catcode`\@ = 11
        !          4629:   \openin 1 \jobname.#1s
        !          4630:   \ifeof 1
        !          4631:     % \enddoublecolumns gets confused if there is no text in the index,
        !          4632:     % and it loses the chapter title and the aux file entries for the
        !          4633:     % index.  The easiest way to prevent this problem is to make sure
        !          4634:     % there is some text.
        !          4635:     \putwordIndexNonexistent
        !          4636:   \else
        !          4637:     %
        !          4638:     % If the index file exists but is empty, then \openin leaves \ifeof
        !          4639:     % false.  We have to make TeX try to read something from the file, so
        !          4640:     % it can discover if there is anything in it.
        !          4641:     \read 1 to \temp
        !          4642:     \ifeof 1
        !          4643:       \putwordIndexIsEmpty
        !          4644:     \else
        !          4645:       % Index files are almost Texinfo source, but we use \ as the escape
        !          4646:       % character.  It would be better to use @, but that's too big a change
        !          4647:       % to make right now.
        !          4648:       \def\indexbackslash{\backslashcurfont}%
        !          4649:       \catcode`\\ = 0
        !          4650:       \escapechar = `\\
        !          4651:       \begindoublecolumns
        !          4652:       \input \jobname.#1s
        !          4653:       \enddoublecolumns
        !          4654:     \fi
        !          4655:   \fi
        !          4656:   \closein 1
        !          4657: \endgroup}
        !          4658: 
        !          4659: % These macros are used by the sorted index file itself.
        !          4660: % Change them to control the appearance of the index.
        !          4661: 
        !          4662: \def\initial#1{{%
        !          4663:   % Some minor font changes for the special characters.
        !          4664:   \let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
        !          4665:   %
        !          4666:   % Remove any glue we may have, we'll be inserting our own.
        !          4667:   \removelastskip
        !          4668:   %
        !          4669:   % We like breaks before the index initials, so insert a bonus.
        !          4670:   \nobreak
        !          4671:   \vskip 0pt plus 3\baselineskip
        !          4672:   \penalty 0
        !          4673:   \vskip 0pt plus -3\baselineskip
        !          4674:   %
        !          4675:   % Typeset the initial.  Making this add up to a whole number of
        !          4676:   % baselineskips increases the chance of the dots lining up from column
        !          4677:   % to column.  It still won't often be perfect, because of the stretch
        !          4678:   % we need before each entry, but it's better.
        !          4679:   %
        !          4680:   % No shrink because it confuses \balancecolumns.
        !          4681:   \vskip 1.67\baselineskip plus .5\baselineskip
        !          4682:   \leftline{\secbf #1}%
        !          4683:   % Do our best not to break after the initial.
        !          4684:   \nobreak
        !          4685:   \vskip .33\baselineskip plus .1\baselineskip
        !          4686: }}
        !          4687: 
        !          4688: % \entry typesets a paragraph consisting of the text (#1), dot leaders, and
        !          4689: % then page number (#2) flushed to the right margin.  It is used for index
        !          4690: % and table of contents entries.  The paragraph is indented by \leftskip.
        !          4691: %
        !          4692: % A straightforward implementation would start like this:
        !          4693: %      \def\entry#1#2{...
        !          4694: % But this freezes the catcodes in the argument, and can cause problems to
        !          4695: % @code, which sets - active.  This problem was fixed by a kludge---
        !          4696: % ``-'' was active throughout whole index, but this isn't really right.
        !          4697: %
        !          4698: % The right solution is to prevent \entry from swallowing the whole text.
        !          4699: %                                 --kasal, 21nov03
        !          4700: \def\entry{%
        !          4701:   \begingroup
        !          4702:     %
        !          4703:     % Start a new paragraph if necessary, so our assignments below can't
        !          4704:     % affect previous text.
        !          4705:     \par
        !          4706:     %
        !          4707:     % Do not fill out the last line with white space.
        !          4708:     \parfillskip = 0in
        !          4709:     %
        !          4710:     % No extra space above this paragraph.
        !          4711:     \parskip = 0in
        !          4712:     %
        !          4713:     % Do not prefer a separate line ending with a hyphen to fewer lines.
        !          4714:     \finalhyphendemerits = 0
        !          4715:     %
        !          4716:     % \hangindent is only relevant when the entry text and page number
        !          4717:     % don't both fit on one line.  In that case, bob suggests starting the
        !          4718:     % dots pretty far over on the line.  Unfortunately, a large
        !          4719:     % indentation looks wrong when the entry text itself is broken across
        !          4720:     % lines.  So we use a small indentation and put up with long leaders.
        !          4721:     %
        !          4722:     % \hangafter is reset to 1 (which is the value we want) at the start
        !          4723:     % of each paragraph, so we need not do anything with that.
        !          4724:     \hangindent = 2em
        !          4725:     %
        !          4726:     % When the entry text needs to be broken, just fill out the first line
        !          4727:     % with blank space.
        !          4728:     \rightskip = 0pt plus1fil
        !          4729:     %
        !          4730:     % A bit of stretch before each entry for the benefit of balancing
        !          4731:     % columns.
        !          4732:     \vskip 0pt plus1pt
        !          4733:     %
        !          4734:     % Swallow the left brace of the text (first parameter):
        !          4735:     \afterassignment\doentry
        !          4736:     \let\temp =
        !          4737: }
        !          4738: \def\doentry{%
        !          4739:     \bgroup % Instead of the swallowed brace.
        !          4740:       \noindent
        !          4741:       \aftergroup\finishentry
        !          4742:       % And now comes the text of the entry.
        !          4743: }
        !          4744: \def\finishentry#1{%
        !          4745:     % #1 is the page number.
        !          4746:     %
        !          4747:     % The following is kludged to not output a line of dots in the index if
        !          4748:     % there are no page numbers.  The next person who breaks this will be
        !          4749:     % cursed by a Unix daemon.
        !          4750:     \setbox\boxA = \hbox{#1}%
        !          4751:     \ifdim\wd\boxA = 0pt
        !          4752:       \ %
        !          4753:     \else
        !          4754:       %
        !          4755:       % If we must, put the page number on a line of its own, and fill out
        !          4756:       % this line with blank space.  (The \hfil is overwhelmed with the
        !          4757:       % fill leaders glue in \indexdotfill if the page number does fit.)
        !          4758:       \hfil\penalty50
        !          4759:       \null\nobreak\indexdotfill % Have leaders before the page number.
        !          4760:       %
        !          4761:       % The `\ ' here is removed by the implicit \unskip that TeX does as
        !          4762:       % part of (the primitive) \par.  Without it, a spurious underfull
        !          4763:       % \hbox ensues.
        !          4764:       \ifpdf
        !          4765:        \pdfgettoks#1.%
        !          4766:        \ \the\toksA
        !          4767:       \else
        !          4768:        \ #1%
        !          4769:       \fi
        !          4770:     \fi
        !          4771:     \par
        !          4772:   \endgroup
        !          4773: }
        !          4774: 
        !          4775: % Like plain.tex's \dotfill, except uses up at least 1 em.
        !          4776: \def\indexdotfill{\cleaders
        !          4777:   \hbox{$\mathsurround=0pt \mkern1.5mu.\mkern1.5mu$}\hskip 1em plus 1fill}
        !          4778: 
        !          4779: \def\primary #1{\line{#1\hfil}}
        !          4780: 
        !          4781: \newskip\secondaryindent \secondaryindent=0.5cm
        !          4782: \def\secondary#1#2{{%
        !          4783:   \parfillskip=0in
        !          4784:   \parskip=0in
        !          4785:   \hangindent=1in
        !          4786:   \hangafter=1
        !          4787:   \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill
        !          4788:   \ifpdf
        !          4789:     \pdfgettoks#2.\ \the\toksA % The page number ends the paragraph.
        !          4790:   \else
        !          4791:     #2
        !          4792:   \fi
        !          4793:   \par
        !          4794: }}
        !          4795: 
        !          4796: % Define two-column mode, which we use to typeset indexes.
        !          4797: % Adapted from the TeXbook, page 416, which is to say,
        !          4798: % the manmac.tex format used to print the TeXbook itself.
        !          4799: \catcode`\@=11
        !          4800: 
        !          4801: \newbox\partialpage
        !          4802: \newdimen\doublecolumnhsize
        !          4803: 
        !          4804: \def\begindoublecolumns{\begingroup % ended by \enddoublecolumns
        !          4805:   % Grab any single-column material above us.
        !          4806:   \output = {%
        !          4807:     %
        !          4808:     % Here is a possibility not foreseen in manmac: if we accumulate a
        !          4809:     % whole lot of material, we might end up calling this \output
        !          4810:     % routine twice in a row (see the doublecol-lose test, which is
        !          4811:     % essentially a couple of indexes with @setchapternewpage off).  In
        !          4812:     % that case we just ship out what is in \partialpage with the normal
        !          4813:     % output routine.  Generally, \partialpage will be empty when this
        !          4814:     % runs and this will be a no-op.  See the indexspread.tex test case.
        !          4815:     \ifvoid\partialpage \else
        !          4816:       \onepageout{\pagecontents\partialpage}%
        !          4817:     \fi
        !          4818:     %
        !          4819:     \global\setbox\partialpage = \vbox{%
        !          4820:       % Unvbox the main output page.
        !          4821:       \unvbox\PAGE
        !          4822:       \kern-\topskip \kern\baselineskip
        !          4823:     }%
        !          4824:   }%
        !          4825:   \eject % run that output routine to set \partialpage
        !          4826:   %
        !          4827:   % Use the double-column output routine for subsequent pages.
        !          4828:   \output = {\doublecolumnout}%
        !          4829:   %
        !          4830:   % Change the page size parameters.  We could do this once outside this
        !          4831:   % routine, in each of @smallbook, @afourpaper, and the default 8.5x11
        !          4832:   % format, but then we repeat the same computation.  Repeating a couple
        !          4833:   % of assignments once per index is clearly meaningless for the
        !          4834:   % execution time, so we may as well do it in one place.
        !          4835:   %
        !          4836:   % First we halve the line length, less a little for the gutter between
        !          4837:   % the columns.  We compute the gutter based on the line length, so it
        !          4838:   % changes automatically with the paper format.  The magic constant
        !          4839:   % below is chosen so that the gutter has the same value (well, +-<1pt)
        !          4840:   % as it did when we hard-coded it.
        !          4841:   %
        !          4842:   % We put the result in a separate register, \doublecolumhsize, so we
        !          4843:   % can restore it in \pagesofar, after \hsize itself has (potentially)
        !          4844:   % been clobbered.
        !          4845:   %
        !          4846:   \doublecolumnhsize = \hsize
        !          4847:     \advance\doublecolumnhsize by -.04154\hsize
        !          4848:     \divide\doublecolumnhsize by 2
        !          4849:   \hsize = \doublecolumnhsize
        !          4850:   %
        !          4851:   % Double the \vsize as well.  (We don't need a separate register here,
        !          4852:   % since nobody clobbers \vsize.)
        !          4853:   \vsize = 2\vsize
        !          4854: }
        !          4855: 
        !          4856: % The double-column output routine for all double-column pages except
        !          4857: % the last.
        !          4858: %
        !          4859: \def\doublecolumnout{%
        !          4860:   \splittopskip=\topskip \splitmaxdepth=\maxdepth
        !          4861:   % Get the available space for the double columns -- the normal
        !          4862:   % (undoubled) page height minus any material left over from the
        !          4863:   % previous page.
        !          4864:   \dimen@ = \vsize
        !          4865:   \divide\dimen@ by 2
        !          4866:   \advance\dimen@ by -\ht\partialpage
        !          4867:   %
        !          4868:   % box0 will be the left-hand column, box2 the right.
        !          4869:   \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
        !          4870:   \onepageout\pagesofar
        !          4871:   \unvbox255
        !          4872:   \penalty\outputpenalty
        !          4873: }
        !          4874: %
        !          4875: % Re-output the contents of the output page -- any previous material,
        !          4876: % followed by the two boxes we just split, in box0 and box2.
        !          4877: \def\pagesofar{%
        !          4878:   \unvbox\partialpage
        !          4879:   %
        !          4880:   \hsize = \doublecolumnhsize
        !          4881:   \wd0=\hsize \wd2=\hsize
        !          4882:   \hbox to\pagewidth{\box0\hfil\box2}%
        !          4883: }
        !          4884: %
        !          4885: % All done with double columns.
        !          4886: \def\enddoublecolumns{%
        !          4887:   % The following penalty ensures that the page builder is exercised
        !          4888:   % _before_ we change the output routine.  This is necessary in the
        !          4889:   % following situation:
        !          4890:   %
        !          4891:   % The last section of the index consists only of a single entry.
        !          4892:   % Before this section, \pagetotal is less than \pagegoal, so no
        !          4893:   % break occurs before the last section starts.  However, the last
        !          4894:   % section, consisting of \initial and the single \entry, does not
        !          4895:   % fit on the page and has to be broken off.  Without the following
        !          4896:   % penalty the page builder will not be exercised until \eject
        !          4897:   % below, and by that time we'll already have changed the output
        !          4898:   % routine to the \balancecolumns version, so the next-to-last
        !          4899:   % double-column page will be processed with \balancecolumns, which
        !          4900:   % is wrong:  The two columns will go to the main vertical list, with
        !          4901:   % the broken-off section in the recent contributions.  As soon as
        !          4902:   % the output routine finishes, TeX starts reconsidering the page
        !          4903:   % break.  The two columns and the broken-off section both fit on the
        !          4904:   % page, because the two columns now take up only half of the page
        !          4905:   % goal.  When TeX sees \eject from below which follows the final
        !          4906:   % section, it invokes the new output routine that we've set after
        !          4907:   % \balancecolumns below; \onepageout will try to fit the two columns
        !          4908:   % and the final section into the vbox of \pageheight (see
        !          4909:   % \pagebody), causing an overfull box.
        !          4910:   %
        !          4911:   % Note that glue won't work here, because glue does not exercise the
        !          4912:   % page builder, unlike penalties (see The TeXbook, pp. 280-281).
        !          4913:   \penalty0
        !          4914:   %
        !          4915:   \output = {%
        !          4916:     % Split the last of the double-column material.  Leave it on the
        !          4917:     % current page, no automatic page break.
        !          4918:     \balancecolumns
        !          4919:     %
        !          4920:     % If we end up splitting too much material for the current page,
        !          4921:     % though, there will be another page break right after this \output
        !          4922:     % invocation ends.  Having called \balancecolumns once, we do not
        !          4923:     % want to call it again.  Therefore, reset \output to its normal
        !          4924:     % definition right away.  (We hope \balancecolumns will never be
        !          4925:     % called on to balance too much material, but if it is, this makes
        !          4926:     % the output somewhat more palatable.)
        !          4927:     \global\output = {\onepageout{\pagecontents\PAGE}}%
        !          4928:   }%
        !          4929:   \eject
        !          4930:   \endgroup % started in \begindoublecolumns
        !          4931:   %
        !          4932:   % \pagegoal was set to the doubled \vsize above, since we restarted
        !          4933:   % the current page.  We're now back to normal single-column
        !          4934:   % typesetting, so reset \pagegoal to the normal \vsize (after the
        !          4935:   % \endgroup where \vsize got restored).
        !          4936:   \pagegoal = \vsize
        !          4937: }
        !          4938: %
        !          4939: % Called at the end of the double column material.
        !          4940: \def\balancecolumns{%
        !          4941:   \setbox0 = \vbox{\unvbox255}% like \box255 but more efficient, see p.120.
        !          4942:   \dimen@ = \ht0
        !          4943:   \advance\dimen@ by \topskip
        !          4944:   \advance\dimen@ by-\baselineskip
        !          4945:   \divide\dimen@ by 2 % target to split to
        !          4946:   %debug\message{final 2-column material height=\the\ht0, target=\the\dimen@.}%
        !          4947:   \splittopskip = \topskip
        !          4948:   % Loop until we get a decent breakpoint.
        !          4949:   {%
        !          4950:     \vbadness = 10000
        !          4951:     \loop
        !          4952:       \global\setbox3 = \copy0
        !          4953:       \global\setbox1 = \vsplit3 to \dimen@
        !          4954:     \ifdim\ht3>\dimen@
        !          4955:       \global\advance\dimen@ by 1pt
        !          4956:     \repeat
        !          4957:   }%
        !          4958:   %debug\message{split to \the\dimen@, column heights: \the\ht1, \the\ht3.}%
        !          4959:   \setbox0=\vbox to\dimen@{\unvbox1}%
        !          4960:   \setbox2=\vbox to\dimen@{\unvbox3}%
        !          4961:   %
        !          4962:   \pagesofar
        !          4963: }
        !          4964: \catcode`\@ = \other
        !          4965: 
        !          4966: 
        !          4967: \message{sectioning,}
        !          4968: % Chapters, sections, etc.
        !          4969: 
        !          4970: % \unnumberedno is an oxymoron, of course.  But we count the unnumbered
        !          4971: % sections so that we can refer to them unambiguously in the pdf
        !          4972: % outlines by their "section number".  We avoid collisions with chapter
        !          4973: % numbers by starting them at 10000.  (If a document ever has 10000
        !          4974: % chapters, we're in trouble anyway, I'm sure.)
        !          4975: \newcount\unnumberedno \unnumberedno = 10000
        !          4976: \newcount\chapno
        !          4977: \newcount\secno        \secno=0
        !          4978: \newcount\subsecno     \subsecno=0
        !          4979: \newcount\subsubsecno  \subsubsecno=0
        !          4980: 
        !          4981: % This counter is funny since it counts through charcodes of letters A, B, ...
        !          4982: \newcount\appendixno  \appendixno = `\@
        !          4983: %
        !          4984: % \def\appendixletter{\char\the\appendixno}
        !          4985: % We do the following ugly conditional instead of the above simple
        !          4986: % construct for the sake of pdftex, which needs the actual
        !          4987: % letter in the expansion, not just typeset.
        !          4988: %
        !          4989: \def\appendixletter{%
        !          4990:   \ifnum\appendixno=`A A%
        !          4991:   \else\ifnum\appendixno=`B B%
        !          4992:   \else\ifnum\appendixno=`C C%
        !          4993:   \else\ifnum\appendixno=`D D%
        !          4994:   \else\ifnum\appendixno=`E E%
        !          4995:   \else\ifnum\appendixno=`F F%
        !          4996:   \else\ifnum\appendixno=`G G%
        !          4997:   \else\ifnum\appendixno=`H H%
        !          4998:   \else\ifnum\appendixno=`I I%
        !          4999:   \else\ifnum\appendixno=`J J%
        !          5000:   \else\ifnum\appendixno=`K K%
        !          5001:   \else\ifnum\appendixno=`L L%
        !          5002:   \else\ifnum\appendixno=`M M%
        !          5003:   \else\ifnum\appendixno=`N N%
        !          5004:   \else\ifnum\appendixno=`O O%
        !          5005:   \else\ifnum\appendixno=`P P%
        !          5006:   \else\ifnum\appendixno=`Q Q%
        !          5007:   \else\ifnum\appendixno=`R R%
        !          5008:   \else\ifnum\appendixno=`S S%
        !          5009:   \else\ifnum\appendixno=`T T%
        !          5010:   \else\ifnum\appendixno=`U U%
        !          5011:   \else\ifnum\appendixno=`V V%
        !          5012:   \else\ifnum\appendixno=`W W%
        !          5013:   \else\ifnum\appendixno=`X X%
        !          5014:   \else\ifnum\appendixno=`Y Y%
        !          5015:   \else\ifnum\appendixno=`Z Z%
        !          5016:   % The \the is necessary, despite appearances, because \appendixletter is
        !          5017:   % expanded while writing the .toc file.  \char\appendixno is not
        !          5018:   % expandable, thus it is written literally, thus all appendixes come out
        !          5019:   % with the same letter (or @) in the toc without it.
        !          5020:   \else\char\the\appendixno
        !          5021:   \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
        !          5022:   \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi}
        !          5023: 
        !          5024: % Each @chapter defines these (using marks) as the number+name, number
        !          5025: % and name of the chapter.  Page headings and footings can use
        !          5026: % these.  @section does likewise.
        !          5027: \def\thischapter{}
        !          5028: \def\thischapternum{}
        !          5029: \def\thischaptername{}
        !          5030: \def\thissection{}
        !          5031: \def\thissectionnum{}
        !          5032: \def\thissectionname{}
        !          5033: 
        !          5034: \newcount\absseclevel % used to calculate proper heading level
        !          5035: \newcount\secbase\secbase=0 % @raisesections/@lowersections modify this count
        !          5036: 
        !          5037: % @raisesections: treat @section as chapter, @subsection as section, etc.
        !          5038: \def\raisesections{\global\advance\secbase by -1}
        !          5039: \let\up=\raisesections % original BFox name
        !          5040: 
        !          5041: % @lowersections: treat @chapter as section, @section as subsection, etc.
        !          5042: \def\lowersections{\global\advance\secbase by 1}
        !          5043: \let\down=\lowersections % original BFox name
        !          5044: 
        !          5045: % we only have subsub.
        !          5046: \chardef\maxseclevel = 3
        !          5047: %
        !          5048: % A numbered section within an unnumbered changes to unnumbered too.
        !          5049: % To achive this, remember the "biggest" unnum. sec. we are currently in:
        !          5050: \chardef\unmlevel = \maxseclevel
        !          5051: %
        !          5052: % Trace whether the current chapter is an appendix or not:
        !          5053: % \chapheadtype is "N" or "A", unnumbered chapters are ignored.
        !          5054: \def\chapheadtype{N}
        !          5055: 
        !          5056: % Choose a heading macro
        !          5057: % #1 is heading type
        !          5058: % #2 is heading level
        !          5059: % #3 is text for heading
        !          5060: \def\genhead#1#2#3{%
        !          5061:   % Compute the abs. sec. level:
        !          5062:   \absseclevel=#2
        !          5063:   \advance\absseclevel by \secbase
        !          5064:   % Make sure \absseclevel doesn't fall outside the range:
        !          5065:   \ifnum \absseclevel < 0
        !          5066:     \absseclevel = 0
        !          5067:   \else
        !          5068:     \ifnum \absseclevel > 3
        !          5069:       \absseclevel = 3
        !          5070:     \fi
        !          5071:   \fi
        !          5072:   % The heading type:
        !          5073:   \def\headtype{#1}%
        !          5074:   \if \headtype U%
        !          5075:     \ifnum \absseclevel < \unmlevel
        !          5076:       \chardef\unmlevel = \absseclevel
        !          5077:     \fi
        !          5078:   \else
        !          5079:     % Check for appendix sections:
        !          5080:     \ifnum \absseclevel = 0
        !          5081:       \edef\chapheadtype{\headtype}%
        !          5082:     \else
        !          5083:       \if \headtype A\if \chapheadtype N%
        !          5084:        \errmessage{@appendix... within a non-appendix chapter}%
        !          5085:       \fi\fi
        !          5086:     \fi
        !          5087:     % Check for numbered within unnumbered:
        !          5088:     \ifnum \absseclevel > \unmlevel
        !          5089:       \def\headtype{U}%
        !          5090:     \else
        !          5091:       \chardef\unmlevel = 3
        !          5092:     \fi
        !          5093:   \fi
        !          5094:   % Now print the heading:
        !          5095:   \if \headtype U%
        !          5096:     \ifcase\absseclevel
        !          5097:        \unnumberedzzz{#3}%
        !          5098:     \or \unnumberedseczzz{#3}%
        !          5099:     \or \unnumberedsubseczzz{#3}%
        !          5100:     \or \unnumberedsubsubseczzz{#3}%
        !          5101:     \fi
        !          5102:   \else
        !          5103:     \if \headtype A%
        !          5104:       \ifcase\absseclevel
        !          5105:          \appendixzzz{#3}%
        !          5106:       \or \appendixsectionzzz{#3}%
        !          5107:       \or \appendixsubseczzz{#3}%
        !          5108:       \or \appendixsubsubseczzz{#3}%
        !          5109:       \fi
        !          5110:     \else
        !          5111:       \ifcase\absseclevel
        !          5112:          \chapterzzz{#3}%
        !          5113:       \or \seczzz{#3}%
        !          5114:       \or \numberedsubseczzz{#3}%
        !          5115:       \or \numberedsubsubseczzz{#3}%
        !          5116:       \fi
        !          5117:     \fi
        !          5118:   \fi
        !          5119:   \suppressfirstparagraphindent
        !          5120: }
        !          5121: 
        !          5122: % an interface:
        !          5123: \def\numhead{\genhead N}
        !          5124: \def\apphead{\genhead A}
        !          5125: \def\unnmhead{\genhead U}
        !          5126: 
        !          5127: % @chapter, @appendix, @unnumbered.  Increment top-level counter, reset
        !          5128: % all lower-level sectioning counters to zero.
        !          5129: %
        !          5130: % Also set \chaplevelprefix, which we prepend to @float sequence numbers
        !          5131: % (e.g., figures), q.v.  By default (before any chapter), that is empty.
        !          5132: \let\chaplevelprefix = \empty
        !          5133: %
        !          5134: \outer\parseargdef\chapter{\numhead0{#1}} % normally numhead0 calls chapterzzz
        !          5135: \def\chapterzzz#1{%
        !          5136:   % section resetting is \global in case the chapter is in a group, such
        !          5137:   % as an @include file.
        !          5138:   \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
        !          5139:     \global\advance\chapno by 1
        !          5140:   %
        !          5141:   % Used for \float.
        !          5142:   \gdef\chaplevelprefix{\the\chapno.}%
        !          5143:   \resetallfloatnos
        !          5144:   %
        !          5145:   % \putwordChapter can contain complex things in translations.
        !          5146:   \toks0=\expandafter{\putwordChapter}%
        !          5147:   \message{\the\toks0 \space \the\chapno}%
        !          5148:   %
        !          5149:   % Write the actual heading.
        !          5150:   \chapmacro{#1}{Ynumbered}{\the\chapno}%
        !          5151:   %
        !          5152:   % So @section and the like are numbered underneath this chapter.
        !          5153:   \global\let\section = \numberedsec
        !          5154:   \global\let\subsection = \numberedsubsec
        !          5155:   \global\let\subsubsection = \numberedsubsubsec
        !          5156: }
        !          5157: 
        !          5158: \outer\parseargdef\appendix{\apphead0{#1}} % normally calls appendixzzz
        !          5159: %
        !          5160: \def\appendixzzz#1{%
        !          5161:   \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
        !          5162:     \global\advance\appendixno by 1
        !          5163:   \gdef\chaplevelprefix{\appendixletter.}%
        !          5164:   \resetallfloatnos
        !          5165:   %
        !          5166:   % \putwordAppendix can contain complex things in translations.
        !          5167:   \toks0=\expandafter{\putwordAppendix}%
        !          5168:   \message{\the\toks0 \space \appendixletter}%
        !          5169:   %
        !          5170:   \chapmacro{#1}{Yappendix}{\appendixletter}%
        !          5171:   %
        !          5172:   \global\let\section = \appendixsec
        !          5173:   \global\let\subsection = \appendixsubsec
        !          5174:   \global\let\subsubsection = \appendixsubsubsec
        !          5175: }
        !          5176: 
        !          5177: \outer\parseargdef\unnumbered{\unnmhead0{#1}} % normally unnmhead0 calls unnumberedzzz
        !          5178: \def\unnumberedzzz#1{%
        !          5179:   \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
        !          5180:     \global\advance\unnumberedno by 1
        !          5181:   %
        !          5182:   % Since an unnumbered has no number, no prefix for figures.
        !          5183:   \global\let\chaplevelprefix = \empty
        !          5184:   \resetallfloatnos
        !          5185:   %
        !          5186:   % This used to be simply \message{#1}, but TeX fully expands the
        !          5187:   % argument to \message.  Therefore, if #1 contained @-commands, TeX
        !          5188:   % expanded them.  For example, in `@unnumbered The @cite{Book}', TeX
        !          5189:   % expanded @cite (which turns out to cause errors because \cite is meant
        !          5190:   % to be executed, not expanded).
        !          5191:   %
        !          5192:   % Anyway, we don't want the fully-expanded definition of @cite to appear
        !          5193:   % as a result of the \message, we just want `@cite' itself.  We use
        !          5194:   % \the<toks register> to achieve this: TeX expands \the<toks> only once,
        !          5195:   % simply yielding the contents of <toks register>.  (We also do this for
        !          5196:   % the toc entries.)
        !          5197:   \toks0 = {#1}%
        !          5198:   \message{(\the\toks0)}%
        !          5199:   %
        !          5200:   \chapmacro{#1}{Ynothing}{\the\unnumberedno}%
        !          5201:   %
        !          5202:   \global\let\section = \unnumberedsec
        !          5203:   \global\let\subsection = \unnumberedsubsec
        !          5204:   \global\let\subsubsection = \unnumberedsubsubsec
        !          5205: }
        !          5206: 
        !          5207: % @centerchap is like @unnumbered, but the heading is centered.
        !          5208: \outer\parseargdef\centerchap{%
        !          5209:   % Well, we could do the following in a group, but that would break
        !          5210:   % an assumption that \chapmacro is called at the outermost level.
        !          5211:   % Thus we are safer this way:                --kasal, 24feb04
        !          5212:   \let\centerparametersmaybe = \centerparameters
        !          5213:   \unnmhead0{#1}%
        !          5214:   \let\centerparametersmaybe = \relax
        !          5215: }
        !          5216: 
        !          5217: % @top is like @unnumbered.
        !          5218: \let\top\unnumbered
        !          5219: 
        !          5220: % Sections.
        !          5221: \outer\parseargdef\numberedsec{\numhead1{#1}} % normally calls seczzz
        !          5222: \def\seczzz#1{%
        !          5223:   \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
        !          5224:   \sectionheading{#1}{sec}{Ynumbered}{\the\chapno.\the\secno}%
        !          5225: }
        !          5226: 
        !          5227: \outer\parseargdef\appendixsection{\apphead1{#1}} % normally calls appendixsectionzzz
        !          5228: \def\appendixsectionzzz#1{%
        !          5229:   \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
        !          5230:   \sectionheading{#1}{sec}{Yappendix}{\appendixletter.\the\secno}%
        !          5231: }
        !          5232: \let\appendixsec\appendixsection
        !          5233: 
        !          5234: \outer\parseargdef\unnumberedsec{\unnmhead1{#1}} % normally calls unnumberedseczzz
        !          5235: \def\unnumberedseczzz#1{%
        !          5236:   \global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
        !          5237:   \sectionheading{#1}{sec}{Ynothing}{\the\unnumberedno.\the\secno}%
        !          5238: }
        !          5239: 
        !          5240: % Subsections.
        !          5241: \outer\parseargdef\numberedsubsec{\numhead2{#1}} % normally calls numberedsubseczzz
        !          5242: \def\numberedsubseczzz#1{%
        !          5243:   \global\subsubsecno=0  \global\advance\subsecno by 1
        !          5244:   \sectionheading{#1}{subsec}{Ynumbered}{\the\chapno.\the\secno.\the\subsecno}%
        !          5245: }
        !          5246: 
        !          5247: \outer\parseargdef\appendixsubsec{\apphead2{#1}} % normally calls appendixsubseczzz
        !          5248: \def\appendixsubseczzz#1{%
        !          5249:   \global\subsubsecno=0  \global\advance\subsecno by 1
        !          5250:   \sectionheading{#1}{subsec}{Yappendix}%
        !          5251:                  {\appendixletter.\the\secno.\the\subsecno}%
        !          5252: }
        !          5253: 
        !          5254: \outer\parseargdef\unnumberedsubsec{\unnmhead2{#1}} %normally calls unnumberedsubseczzz
        !          5255: \def\unnumberedsubseczzz#1{%
        !          5256:   \global\subsubsecno=0  \global\advance\subsecno by 1
        !          5257:   \sectionheading{#1}{subsec}{Ynothing}%
        !          5258:                  {\the\unnumberedno.\the\secno.\the\subsecno}%
        !          5259: }
        !          5260: 
        !          5261: % Subsubsections.
        !          5262: \outer\parseargdef\numberedsubsubsec{\numhead3{#1}} % normally numberedsubsubseczzz
        !          5263: \def\numberedsubsubseczzz#1{%
        !          5264:   \global\advance\subsubsecno by 1
        !          5265:   \sectionheading{#1}{subsubsec}{Ynumbered}%
        !          5266:                  {\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno}%
        !          5267: }
        !          5268: 
        !          5269: \outer\parseargdef\appendixsubsubsec{\apphead3{#1}} % normally appendixsubsubseczzz
        !          5270: \def\appendixsubsubseczzz#1{%
        !          5271:   \global\advance\subsubsecno by 1
        !          5272:   \sectionheading{#1}{subsubsec}{Yappendix}%
        !          5273:                  {\appendixletter.\the\secno.\the\subsecno.\the\subsubsecno}%
        !          5274: }
        !          5275: 
        !          5276: \outer\parseargdef\unnumberedsubsubsec{\unnmhead3{#1}} %normally unnumberedsubsubseczzz
        !          5277: \def\unnumberedsubsubseczzz#1{%
        !          5278:   \global\advance\subsubsecno by 1
        !          5279:   \sectionheading{#1}{subsubsec}{Ynothing}%
        !          5280:                  {\the\unnumberedno.\the\secno.\the\subsecno.\the\subsubsecno}%
        !          5281: }
        !          5282: 
        !          5283: % These macros control what the section commands do, according
        !          5284: % to what kind of chapter we are in (ordinary, appendix, or unnumbered).
        !          5285: % Define them by default for a numbered chapter.
        !          5286: \let\section = \numberedsec
        !          5287: \let\subsection = \numberedsubsec
        !          5288: \let\subsubsection = \numberedsubsubsec
        !          5289: 
        !          5290: % Define @majorheading, @heading and @subheading
        !          5291: 
        !          5292: % NOTE on use of \vbox for chapter headings, section headings, and such:
        !          5293: %       1) We use \vbox rather than the earlier \line to permit
        !          5294: %          overlong headings to fold.
        !          5295: %       2) \hyphenpenalty is set to 10000 because hyphenation in a
        !          5296: %          heading is obnoxious; this forbids it.
        !          5297: %       3) Likewise, headings look best if no \parindent is used, and
        !          5298: %          if justification is not attempted.  Hence \raggedright.
        !          5299: 
        !          5300: \def\majorheading{%
        !          5301:   {\advance\chapheadingskip by 10pt \chapbreak }%
        !          5302:   \parsearg\chapheadingzzz
        !          5303: }
        !          5304: 
        !          5305: \def\chapheading{\chapbreak \parsearg\chapheadingzzz}
        !          5306: \def\chapheadingzzz#1{%
        !          5307:   {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          5308:                     \parindent=0pt\ptexraggedright
        !          5309:                     \rmisbold #1\hfill}}%
        !          5310:   \bigskip \par\penalty 200\relax
        !          5311:   \suppressfirstparagraphindent
        !          5312: }
        !          5313: 
        !          5314: % @heading, @subheading, @subsubheading.
        !          5315: \parseargdef\heading{\sectionheading{#1}{sec}{Yomitfromtoc}{}
        !          5316:   \suppressfirstparagraphindent}
        !          5317: \parseargdef\subheading{\sectionheading{#1}{subsec}{Yomitfromtoc}{}
        !          5318:   \suppressfirstparagraphindent}
        !          5319: \parseargdef\subsubheading{\sectionheading{#1}{subsubsec}{Yomitfromtoc}{}
        !          5320:   \suppressfirstparagraphindent}
        !          5321: 
        !          5322: % These macros generate a chapter, section, etc. heading only
        !          5323: % (including whitespace, linebreaking, etc. around it),
        !          5324: % given all the information in convenient, parsed form.
        !          5325: 
        !          5326: %%% Args are the skip and penalty (usually negative)
        !          5327: \def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
        !          5328: 
        !          5329: %%% Define plain chapter starts, and page on/off switching for it
        !          5330: % Parameter controlling skip before chapter headings (if needed)
        !          5331: 
        !          5332: \newskip\chapheadingskip
        !          5333: 
        !          5334: \def\chapbreak{\dobreak \chapheadingskip {-4000}}
        !          5335: \def\chappager{\par\vfill\supereject}
        !          5336: % Because \domark is called before \chapoddpage, the filler page will
        !          5337: % get the headings for the next chapter, which is wrong.  But we don't
        !          5338: % care -- we just disable all headings on the filler page.
        !          5339: \def\chapoddpage{%
        !          5340:   \chappager
        !          5341:   \ifodd\pageno \else
        !          5342:     \begingroup
        !          5343:       \evenheadline={\hfil}\evenfootline={\hfil}%
        !          5344:       \oddheadline={\hfil}\oddfootline={\hfil}%
        !          5345:       \hbox to 0pt{}%
        !          5346:       \chappager
        !          5347:     \endgroup
        !          5348:   \fi
        !          5349: }
        !          5350: 
        !          5351: \def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
        !          5352: 
        !          5353: \def\CHAPPAGoff{%
        !          5354: \global\let\contentsalignmacro = \chappager
        !          5355: \global\let\pchapsepmacro=\chapbreak
        !          5356: \global\let\pagealignmacro=\chappager}
        !          5357: 
        !          5358: \def\CHAPPAGon{%
        !          5359: \global\let\contentsalignmacro = \chappager
        !          5360: \global\let\pchapsepmacro=\chappager
        !          5361: \global\let\pagealignmacro=\chappager
        !          5362: \global\def\HEADINGSon{\HEADINGSsingle}}
        !          5363: 
        !          5364: \def\CHAPPAGodd{%
        !          5365: \global\let\contentsalignmacro = \chapoddpage
        !          5366: \global\let\pchapsepmacro=\chapoddpage
        !          5367: \global\let\pagealignmacro=\chapoddpage
        !          5368: \global\def\HEADINGSon{\HEADINGSdouble}}
        !          5369: 
        !          5370: \CHAPPAGon
        !          5371: 
        !          5372: % Chapter opening.
        !          5373: %
        !          5374: % #1 is the text, #2 is the section type (Ynumbered, Ynothing,
        !          5375: % Yappendix, Yomitfromtoc), #3 the chapter number.
        !          5376: %
        !          5377: % To test against our argument.
        !          5378: \def\Ynothingkeyword{Ynothing}
        !          5379: \def\Yomitfromtockeyword{Yomitfromtoc}
        !          5380: \def\Yappendixkeyword{Yappendix}
        !          5381: %
        !          5382: \def\chapmacro#1#2#3{%
        !          5383:   % Insert the first mark before the heading break (see notes for \domark).
        !          5384:   \let\prevchapterdefs=\lastchapterdefs
        !          5385:   \let\prevsectiondefs=\lastsectiondefs
        !          5386:   \gdef\lastsectiondefs{\gdef\thissectionname{}\gdef\thissectionnum{}%
        !          5387:                         \gdef\thissection{}}%
        !          5388:   %
        !          5389:   \def\temptype{#2}%
        !          5390:   \ifx\temptype\Ynothingkeyword
        !          5391:     \gdef\lastchapterdefs{\gdef\thischaptername{#1}\gdef\thischapternum{}%
        !          5392:                           \gdef\thischapter{\thischaptername}}%
        !          5393:   \else\ifx\temptype\Yomitfromtockeyword
        !          5394:     \gdef\lastchapterdefs{\gdef\thischaptername{#1}\gdef\thischapternum{}%
        !          5395:                           \gdef\thischapter{}}%
        !          5396:   \else\ifx\temptype\Yappendixkeyword
        !          5397:     \toks0={#1}%
        !          5398:     \xdef\lastchapterdefs{%
        !          5399:       \gdef\noexpand\thischaptername{\the\toks0}%
        !          5400:       \gdef\noexpand\thischapternum{\appendixletter}%
        !          5401:       % \noexpand\putwordAppendix avoids expanding indigestible
        !          5402:       % commands in some of the translations.
        !          5403:       \gdef\noexpand\thischapter{\noexpand\putwordAppendix{}
        !          5404:                                  \noexpand\thischapternum:
        !          5405:                                  \noexpand\thischaptername}%
        !          5406:     }%
        !          5407:   \else
        !          5408:     \toks0={#1}%
        !          5409:     \xdef\lastchapterdefs{%
        !          5410:       \gdef\noexpand\thischaptername{\the\toks0}%
        !          5411:       \gdef\noexpand\thischapternum{\the\chapno}%
        !          5412:       % \noexpand\putwordChapter avoids expanding indigestible
        !          5413:       % commands in some of the translations.
        !          5414:       \gdef\noexpand\thischapter{\noexpand\putwordChapter{}
        !          5415:                                  \noexpand\thischapternum:
        !          5416:                                  \noexpand\thischaptername}%
        !          5417:     }%
        !          5418:   \fi\fi\fi
        !          5419:   %
        !          5420:   % Output the mark.  Pass it through \safewhatsit, to take care of
        !          5421:   % the preceding space.
        !          5422:   \safewhatsit\domark
        !          5423:   %
        !          5424:   % Insert the chapter heading break.
        !          5425:   \pchapsepmacro
        !          5426:   %
        !          5427:   % Now the second mark, after the heading break.  No break points
        !          5428:   % between here and the heading.
        !          5429:   \let\prevchapterdefs=\lastchapterdefs
        !          5430:   \let\prevsectiondefs=\lastsectiondefs
        !          5431:   \domark
        !          5432:   %
        !          5433:   {%
        !          5434:     \chapfonts \rmisbold
        !          5435:     %
        !          5436:     % Have to define \lastsection before calling \donoderef, because the
        !          5437:     % xref code eventually uses it.  On the other hand, it has to be called
        !          5438:     % after \pchapsepmacro, or the headline will change too soon.
        !          5439:     \gdef\lastsection{#1}%
        !          5440:     %
        !          5441:     % Only insert the separating space if we have a chapter/appendix
        !          5442:     % number, and don't print the unnumbered ``number''.
        !          5443:     \ifx\temptype\Ynothingkeyword
        !          5444:       \setbox0 = \hbox{}%
        !          5445:       \def\toctype{unnchap}%
        !          5446:     \else\ifx\temptype\Yomitfromtockeyword
        !          5447:       \setbox0 = \hbox{}% contents like unnumbered, but no toc entry
        !          5448:       \def\toctype{omit}%
        !          5449:     \else\ifx\temptype\Yappendixkeyword
        !          5450:       \setbox0 = \hbox{\putwordAppendix{} #3\enspace}%
        !          5451:       \def\toctype{app}%
        !          5452:     \else
        !          5453:       \setbox0 = \hbox{#3\enspace}%
        !          5454:       \def\toctype{numchap}%
        !          5455:     \fi\fi\fi
        !          5456:     %
        !          5457:     % Write the toc entry for this chapter.  Must come before the
        !          5458:     % \donoderef, because we include the current node name in the toc
        !          5459:     % entry, and \donoderef resets it to empty.
        !          5460:     \writetocentry{\toctype}{#1}{#3}%
        !          5461:     %
        !          5462:     % For pdftex, we have to write out the node definition (aka, make
        !          5463:     % the pdfdest) after any page break, but before the actual text has
        !          5464:     % been typeset.  If the destination for the pdf outline is after the
        !          5465:     % text, then jumping from the outline may wind up with the text not
        !          5466:     % being visible, for instance under high magnification.
        !          5467:     \donoderef{#2}%
        !          5468:     %
        !          5469:     % Typeset the actual heading.
        !          5470:     \nobreak % Avoid page breaks at the interline glue.
        !          5471:     \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \ptexraggedright
        !          5472:           \hangindent=\wd0 \centerparametersmaybe
        !          5473:           \unhbox0 #1\par}%
        !          5474:   }%
        !          5475:   \nobreak\bigskip % no page break after a chapter title
        !          5476:   \nobreak
        !          5477: }
        !          5478: 
        !          5479: % @centerchap -- centered and unnumbered.
        !          5480: \let\centerparametersmaybe = \relax
        !          5481: \def\centerparameters{%
        !          5482:   \advance\rightskip by 3\rightskip
        !          5483:   \leftskip = \rightskip
        !          5484:   \parfillskip = 0pt
        !          5485: }
        !          5486: 
        !          5487: 
        !          5488: % I don't think this chapter style is supported any more, so I'm not
        !          5489: % updating it with the new noderef stuff.  We'll see.  --karl, 11aug03.
        !          5490: %
        !          5491: \def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
        !          5492: %
        !          5493: \def\unnchfopen #1{%
        !          5494: \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          5495:                        \parindent=0pt\ptexraggedright
        !          5496:                        \rmisbold #1\hfill}}\bigskip \par\nobreak
        !          5497: }
        !          5498: \def\chfopen #1#2{\chapoddpage {\chapfonts
        !          5499: \vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
        !          5500: \par\penalty 5000 %
        !          5501: }
        !          5502: \def\centerchfopen #1{%
        !          5503: \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          5504:                        \parindent=0pt
        !          5505:                        \hfill {\rmisbold #1}\hfill}}\bigskip \par\nobreak
        !          5506: }
        !          5507: \def\CHAPFopen{%
        !          5508:   \global\let\chapmacro=\chfopen
        !          5509:   \global\let\centerchapmacro=\centerchfopen}
        !          5510: 
        !          5511: 
        !          5512: % Section titles.  These macros combine the section number parts and
        !          5513: % call the generic \sectionheading to do the printing.
        !          5514: %
        !          5515: \newskip\secheadingskip
        !          5516: \def\secheadingbreak{\dobreak \secheadingskip{-1000}}
        !          5517: 
        !          5518: % Subsection titles.
        !          5519: \newskip\subsecheadingskip
        !          5520: \def\subsecheadingbreak{\dobreak \subsecheadingskip{-500}}
        !          5521: 
        !          5522: % Subsubsection titles.
        !          5523: \def\subsubsecheadingskip{\subsecheadingskip}
        !          5524: \def\subsubsecheadingbreak{\subsecheadingbreak}
        !          5525: 
        !          5526: 
        !          5527: % Print any size, any type, section title.
        !          5528: %
        !          5529: % #1 is the text, #2 is the section level (sec/subsec/subsubsec), #3 is
        !          5530: % the section type for xrefs (Ynumbered, Ynothing, Yappendix), #4 is the
        !          5531: % section number.
        !          5532: %
        !          5533: \def\seckeyword{sec}
        !          5534: %
        !          5535: \def\sectionheading#1#2#3#4{%
        !          5536:   {%
        !          5537:     % Switch to the right set of fonts.
        !          5538:     \csname #2fonts\endcsname \rmisbold
        !          5539:     %
        !          5540:     \def\sectionlevel{#2}%
        !          5541:     \def\temptype{#3}%
        !          5542:     %
        !          5543:     % Insert first mark before the heading break (see notes for \domark).
        !          5544:     \let\prevsectiondefs=\lastsectiondefs
        !          5545:     \ifx\temptype\Ynothingkeyword
        !          5546:       \ifx\sectionlevel\seckeyword
        !          5547:         \gdef\lastsectiondefs{\gdef\thissectionname{#1}\gdef\thissectionnum{}%
        !          5548:                               \gdef\thissection{\thissectionname}}%
        !          5549:       \fi
        !          5550:     \else\ifx\temptype\Yomitfromtockeyword
        !          5551:       % Don't redefine \thissection.
        !          5552:     \else\ifx\temptype\Yappendixkeyword
        !          5553:       \ifx\sectionlevel\seckeyword
        !          5554:         \toks0={#1}%
        !          5555:         \xdef\lastsectiondefs{%
        !          5556:           \gdef\noexpand\thissectionname{\the\toks0}%
        !          5557:           \gdef\noexpand\thissectionnum{#4}%
        !          5558:           % \noexpand\putwordSection avoids expanding indigestible
        !          5559:           % commands in some of the translations.
        !          5560:           \gdef\noexpand\thissection{\noexpand\putwordSection{}
        !          5561:                                      \noexpand\thissectionnum:
        !          5562:                                      \noexpand\thissectionname}%
        !          5563:         }%
        !          5564:       \fi
        !          5565:     \else
        !          5566:       \ifx\sectionlevel\seckeyword
        !          5567:         \toks0={#1}%
        !          5568:         \xdef\lastsectiondefs{%
        !          5569:           \gdef\noexpand\thissectionname{\the\toks0}%
        !          5570:           \gdef\noexpand\thissectionnum{#4}%
        !          5571:           % \noexpand\putwordSection avoids expanding indigestible
        !          5572:           % commands in some of the translations.
        !          5573:           \gdef\noexpand\thissection{\noexpand\putwordSection{}
        !          5574:                                      \noexpand\thissectionnum:
        !          5575:                                      \noexpand\thissectionname}%
        !          5576:         }%
        !          5577:       \fi
        !          5578:     \fi\fi\fi
        !          5579:     %
        !          5580:     % Go into vertical mode.  Usually we'll already be there, but we
        !          5581:     % don't want the following whatsit to end up in a preceding paragraph
        !          5582:     % if the document didn't happen to have a blank line.
        !          5583:     \par
        !          5584:     %
        !          5585:     % Output the mark.  Pass it through \safewhatsit, to take care of
        !          5586:     % the preceding space.
        !          5587:     \safewhatsit\domark
        !          5588:     %
        !          5589:     % Insert space above the heading.
        !          5590:     \csname #2headingbreak\endcsname
        !          5591:     %
        !          5592:     % Now the second mark, after the heading break.  No break points
        !          5593:     % between here and the heading.
        !          5594:     \let\prevsectiondefs=\lastsectiondefs
        !          5595:     \domark
        !          5596:     %
        !          5597:     % Only insert the space after the number if we have a section number.
        !          5598:     \ifx\temptype\Ynothingkeyword
        !          5599:       \setbox0 = \hbox{}%
        !          5600:       \def\toctype{unn}%
        !          5601:       \gdef\lastsection{#1}%
        !          5602:     \else\ifx\temptype\Yomitfromtockeyword
        !          5603:       % for @headings -- no section number, don't include in toc,
        !          5604:       % and don't redefine \lastsection.
        !          5605:       \setbox0 = \hbox{}%
        !          5606:       \def\toctype{omit}%
        !          5607:       \let\sectionlevel=\empty
        !          5608:     \else\ifx\temptype\Yappendixkeyword
        !          5609:       \setbox0 = \hbox{#4\enspace}%
        !          5610:       \def\toctype{app}%
        !          5611:       \gdef\lastsection{#1}%
        !          5612:     \else
        !          5613:       \setbox0 = \hbox{#4\enspace}%
        !          5614:       \def\toctype{num}%
        !          5615:       \gdef\lastsection{#1}%
        !          5616:     \fi\fi\fi
        !          5617:     %
        !          5618:     % Write the toc entry (before \donoderef).  See comments in \chapmacro.
        !          5619:     \writetocentry{\toctype\sectionlevel}{#1}{#4}%
        !          5620:     %
        !          5621:     % Write the node reference (= pdf destination for pdftex).
        !          5622:     % Again, see comments in \chapmacro.
        !          5623:     \donoderef{#3}%
        !          5624:     %
        !          5625:     % Interline glue will be inserted when the vbox is completed.
        !          5626:     % That glue will be a valid breakpoint for the page, since it'll be
        !          5627:     % preceded by a whatsit (usually from the \donoderef, or from the
        !          5628:     % \writetocentry if there was no node).  We don't want to allow that
        !          5629:     % break, since then the whatsits could end up on page n while the
        !          5630:     % section is on page n+1, thus toc/etc. are wrong.  Debian bug 276000.
        !          5631:     \nobreak
        !          5632:     %
        !          5633:     % Output the actual section heading.
        !          5634:     \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \ptexraggedright
        !          5635:           \hangindent=\wd0  % zero if no section number
        !          5636:           \unhbox0 #1}%
        !          5637:   }%
        !          5638:   % Add extra space after the heading -- half of whatever came above it.
        !          5639:   % Don't allow stretch, though.
        !          5640:   \kern .5 \csname #2headingskip\endcsname
        !          5641:   %
        !          5642:   % Do not let the kern be a potential breakpoint, as it would be if it
        !          5643:   % was followed by glue.
        !          5644:   \nobreak
        !          5645:   %
        !          5646:   % We'll almost certainly start a paragraph next, so don't let that
        !          5647:   % glue accumulate.  (Not a breakpoint because it's preceded by a
        !          5648:   % discardable item.)
        !          5649:   \vskip-\parskip
        !          5650:   %
        !          5651:   % This is purely so the last item on the list is a known \penalty >
        !          5652:   % 10000.  This is so \startdefun can avoid allowing breakpoints after
        !          5653:   % section headings.  Otherwise, it would insert a valid breakpoint between:
        !          5654:   %
        !          5655:   %   @section sec-whatever
        !          5656:   %   @deffn def-whatever
        !          5657:   \penalty 10001
        !          5658: }
        !          5659: 
        !          5660: 
        !          5661: \message{toc,}
        !          5662: % Table of contents.
        !          5663: \newwrite\tocfile
        !          5664: 
        !          5665: % Write an entry to the toc file, opening it if necessary.
        !          5666: % Called from @chapter, etc.
        !          5667: %
        !          5668: % Example usage: \writetocentry{sec}{Section Name}{\the\chapno.\the\secno}
        !          5669: % We append the current node name (if any) and page number as additional
        !          5670: % arguments for the \{chap,sec,...}entry macros which will eventually
        !          5671: % read this.  The node name is used in the pdf outlines as the
        !          5672: % destination to jump to.
        !          5673: %
        !          5674: % We open the .toc file for writing here instead of at @setfilename (or
        !          5675: % any other fixed time) so that @contents can be anywhere in the document.
        !          5676: % But if #1 is `omit', then we don't do anything.  This is used for the
        !          5677: % table of contents chapter openings themselves.
        !          5678: %
        !          5679: \newif\iftocfileopened
        !          5680: \def\omitkeyword{omit}%
        !          5681: %
        !          5682: \def\writetocentry#1#2#3{%
        !          5683:   \edef\writetoctype{#1}%
        !          5684:   \ifx\writetoctype\omitkeyword \else
        !          5685:     \iftocfileopened\else
        !          5686:       \immediate\openout\tocfile = \jobname.toc
        !          5687:       \global\tocfileopenedtrue
        !          5688:     \fi
        !          5689:     %
        !          5690:     \iflinks
        !          5691:       {\atdummies
        !          5692:        \edef\temp{%
        !          5693:          \write\tocfile{@#1entry{#2}{#3}{\lastnode}{\noexpand\folio}}}%
        !          5694:        \temp
        !          5695:       }%
        !          5696:     \fi
        !          5697:   \fi
        !          5698:   %
        !          5699:   % Tell \shipout to create a pdf destination on each page, if we're
        !          5700:   % writing pdf.  These are used in the table of contents.  We can't
        !          5701:   % just write one on every page because the title pages are numbered
        !          5702:   % 1 and 2 (the page numbers aren't printed), and so are the first
        !          5703:   % two pages of the document.  Thus, we'd have two destinations named
        !          5704:   % `1', and two named `2'.
        !          5705:   \ifpdf \global\pdfmakepagedesttrue \fi
        !          5706: }
        !          5707: 
        !          5708: 
        !          5709: % These characters do not print properly in the Computer Modern roman
        !          5710: % fonts, so we must take special care.  This is more or less redundant
        !          5711: % with the Texinfo input format setup at the end of this file.
        !          5712: %
        !          5713: \def\activecatcodes{%
        !          5714:   \catcode`\"=\active
        !          5715:   \catcode`\$=\active
        !          5716:   \catcode`\<=\active
        !          5717:   \catcode`\>=\active
        !          5718:   \catcode`\\=\active
        !          5719:   \catcode`\^=\active
        !          5720:   \catcode`\_=\active
        !          5721:   \catcode`\|=\active
        !          5722:   \catcode`\~=\active
        !          5723: }
        !          5724: 
        !          5725: 
        !          5726: % Read the toc file, which is essentially Texinfo input.
        !          5727: \def\readtocfile{%
        !          5728:   \setupdatafile
        !          5729:   \activecatcodes
        !          5730:   \input \tocreadfilename
        !          5731: }
        !          5732: 
        !          5733: \newskip\contentsrightmargin \contentsrightmargin=1in
        !          5734: \newcount\savepageno
        !          5735: \newcount\lastnegativepageno \lastnegativepageno = -1
        !          5736: 
        !          5737: % Prepare to read what we've written to \tocfile.
        !          5738: %
        !          5739: \def\startcontents#1{%
        !          5740:   % If @setchapternewpage on, and @headings double, the contents should
        !          5741:   % start on an odd page, unlike chapters.  Thus, we maintain
        !          5742:   % \contentsalignmacro in parallel with \pagealignmacro.
        !          5743:   % From: Torbjorn Granlund <tege@matematik.su.se>
        !          5744:   \contentsalignmacro
        !          5745:   \immediate\closeout\tocfile
        !          5746:   %
        !          5747:   % Don't need to put `Contents' or `Short Contents' in the headline.
        !          5748:   % It is abundantly clear what they are.
        !          5749:   \chapmacro{#1}{Yomitfromtoc}{}%
        !          5750:   %
        !          5751:   \savepageno = \pageno
        !          5752:   \begingroup                  % Set up to handle contents files properly.
        !          5753:     \raggedbottom              % Worry more about breakpoints than the bottom.
        !          5754:     \advance\hsize by -\contentsrightmargin % Don't use the full line length.
        !          5755:     %
        !          5756:     % Roman numerals for page numbers.
        !          5757:     \ifnum \pageno>0 \global\pageno = \lastnegativepageno \fi
        !          5758: }
        !          5759: 
        !          5760: % redefined for the two-volume lispref.  We always output on
        !          5761: % \jobname.toc even if this is redefined.
        !          5762: %
        !          5763: \def\tocreadfilename{\jobname.toc}
        !          5764: 
        !          5765: % Normal (long) toc.
        !          5766: %
        !          5767: \def\contents{%
        !          5768:   \startcontents{\putwordTOC}%
        !          5769:     \openin 1 \tocreadfilename\space
        !          5770:     \ifeof 1 \else
        !          5771:       \readtocfile
        !          5772:     \fi
        !          5773:     \vfill \eject
        !          5774:     \contentsalignmacro % in case @setchapternewpage odd is in effect
        !          5775:     \ifeof 1 \else
        !          5776:       \pdfmakeoutlines
        !          5777:     \fi
        !          5778:     \closein 1
        !          5779:   \endgroup
        !          5780:   \lastnegativepageno = \pageno
        !          5781:   \global\pageno = \savepageno
        !          5782: }
        !          5783: 
        !          5784: % And just the chapters.
        !          5785: \def\summarycontents{%
        !          5786:   \startcontents{\putwordShortTOC}%
        !          5787:     %
        !          5788:     \let\numchapentry = \shortchapentry
        !          5789:     \let\appentry = \shortchapentry
        !          5790:     \let\unnchapentry = \shortunnchapentry
        !          5791:     % We want a true roman here for the page numbers.
        !          5792:     \secfonts
        !          5793:     \let\rm=\shortcontrm \let\bf=\shortcontbf
        !          5794:     \let\sl=\shortcontsl \let\tt=\shortconttt
        !          5795:     \rm
        !          5796:     \hyphenpenalty = 10000
        !          5797:     \advance\baselineskip by 1pt % Open it up a little.
        !          5798:     \def\numsecentry##1##2##3##4{}
        !          5799:     \let\appsecentry = \numsecentry
        !          5800:     \let\unnsecentry = \numsecentry
        !          5801:     \let\numsubsecentry = \numsecentry
        !          5802:     \let\appsubsecentry = \numsecentry
        !          5803:     \let\unnsubsecentry = \numsecentry
        !          5804:     \let\numsubsubsecentry = \numsecentry
        !          5805:     \let\appsubsubsecentry = \numsecentry
        !          5806:     \let\unnsubsubsecentry = \numsecentry
        !          5807:     \openin 1 \tocreadfilename\space
        !          5808:     \ifeof 1 \else
        !          5809:       \readtocfile
        !          5810:     \fi
        !          5811:     \closein 1
        !          5812:     \vfill \eject
        !          5813:     \contentsalignmacro % in case @setchapternewpage odd is in effect
        !          5814:   \endgroup
        !          5815:   \lastnegativepageno = \pageno
        !          5816:   \global\pageno = \savepageno
        !          5817: }
        !          5818: \let\shortcontents = \summarycontents
        !          5819: 
        !          5820: % Typeset the label for a chapter or appendix for the short contents.
        !          5821: % The arg is, e.g., `A' for an appendix, or `3' for a chapter.
        !          5822: %
        !          5823: \def\shortchaplabel#1{%
        !          5824:   % This space should be enough, since a single number is .5em, and the
        !          5825:   % widest letter (M) is 1em, at least in the Computer Modern fonts.
        !          5826:   % But use \hss just in case.
        !          5827:   % (This space doesn't include the extra space that gets added after
        !          5828:   % the label; that gets put in by \shortchapentry above.)
        !          5829:   %
        !          5830:   % We'd like to right-justify chapter numbers, but that looks strange
        !          5831:   % with appendix letters.  And right-justifying numbers and
        !          5832:   % left-justifying letters looks strange when there is less than 10
        !          5833:   % chapters.  Have to read the whole toc once to know how many chapters
        !          5834:   % there are before deciding ...
        !          5835:   \hbox to 1em{#1\hss}%
        !          5836: }
        !          5837: 
        !          5838: % These macros generate individual entries in the table of contents.
        !          5839: % The first argument is the chapter or section name.
        !          5840: % The last argument is the page number.
        !          5841: % The arguments in between are the chapter number, section number, ...
        !          5842: 
        !          5843: % Chapters, in the main contents.
        !          5844: \def\numchapentry#1#2#3#4{\dochapentry{#2\labelspace#1}{#4}}
        !          5845: %
        !          5846: % Chapters, in the short toc.
        !          5847: % See comments in \dochapentry re vbox and related settings.
        !          5848: \def\shortchapentry#1#2#3#4{%
        !          5849:   \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno\bgroup#4\egroup}%
        !          5850: }
        !          5851: 
        !          5852: % Appendices, in the main contents.
        !          5853: % Need the word Appendix, and a fixed-size box.
        !          5854: %
        !          5855: \def\appendixbox#1{%
        !          5856:   % We use M since it's probably the widest letter.
        !          5857:   \setbox0 = \hbox{\putwordAppendix{} M}%
        !          5858:   \hbox to \wd0{\putwordAppendix{} #1\hss}}
        !          5859: %
        !          5860: \def\appentry#1#2#3#4{\dochapentry{\appendixbox{#2}\labelspace#1}{#4}}
        !          5861: 
        !          5862: % Unnumbered chapters.
        !          5863: \def\unnchapentry#1#2#3#4{\dochapentry{#1}{#4}}
        !          5864: \def\shortunnchapentry#1#2#3#4{\tocentry{#1}{\doshortpageno\bgroup#4\egroup}}
        !          5865: 
        !          5866: % Sections.
        !          5867: \def\numsecentry#1#2#3#4{\dosecentry{#2\labelspace#1}{#4}}
        !          5868: \let\appsecentry=\numsecentry
        !          5869: \def\unnsecentry#1#2#3#4{\dosecentry{#1}{#4}}
        !          5870: 
        !          5871: % Subsections.
        !          5872: \def\numsubsecentry#1#2#3#4{\dosubsecentry{#2\labelspace#1}{#4}}
        !          5873: \let\appsubsecentry=\numsubsecentry
        !          5874: \def\unnsubsecentry#1#2#3#4{\dosubsecentry{#1}{#4}}
        !          5875: 
        !          5876: % And subsubsections.
        !          5877: \def\numsubsubsecentry#1#2#3#4{\dosubsubsecentry{#2\labelspace#1}{#4}}
        !          5878: \let\appsubsubsecentry=\numsubsubsecentry
        !          5879: \def\unnsubsubsecentry#1#2#3#4{\dosubsubsecentry{#1}{#4}}
        !          5880: 
        !          5881: % This parameter controls the indentation of the various levels.
        !          5882: % Same as \defaultparindent.
        !          5883: \newdimen\tocindent \tocindent = 15pt
        !          5884: 
        !          5885: % Now for the actual typesetting. In all these, #1 is the text and #2 is the
        !          5886: % page number.
        !          5887: %
        !          5888: % If the toc has to be broken over pages, we want it to be at chapters
        !          5889: % if at all possible; hence the \penalty.
        !          5890: \def\dochapentry#1#2{%
        !          5891:    \penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip
        !          5892:    \begingroup
        !          5893:      \chapentryfonts
        !          5894:      \tocentry{#1}{\dopageno\bgroup#2\egroup}%
        !          5895:    \endgroup
        !          5896:    \nobreak\vskip .25\baselineskip plus.1\baselineskip
        !          5897: }
        !          5898: 
        !          5899: \def\dosecentry#1#2{\begingroup
        !          5900:   \secentryfonts \leftskip=\tocindent
        !          5901:   \tocentry{#1}{\dopageno\bgroup#2\egroup}%
        !          5902: \endgroup}
        !          5903: 
        !          5904: \def\dosubsecentry#1#2{\begingroup
        !          5905:   \subsecentryfonts \leftskip=2\tocindent
        !          5906:   \tocentry{#1}{\dopageno\bgroup#2\egroup}%
        !          5907: \endgroup}
        !          5908: 
        !          5909: \def\dosubsubsecentry#1#2{\begingroup
        !          5910:   \subsubsecentryfonts \leftskip=3\tocindent
        !          5911:   \tocentry{#1}{\dopageno\bgroup#2\egroup}%
        !          5912: \endgroup}
        !          5913: 
        !          5914: % We use the same \entry macro as for the index entries.
        !          5915: \let\tocentry = \entry
        !          5916: 
        !          5917: % Space between chapter (or whatever) number and the title.
        !          5918: \def\labelspace{\hskip1em \relax}
        !          5919: 
        !          5920: \def\dopageno#1{{\rm #1}}
        !          5921: \def\doshortpageno#1{{\rm #1}}
        !          5922: 
        !          5923: \def\chapentryfonts{\secfonts \rm}
        !          5924: \def\secentryfonts{\textfonts}
        !          5925: \def\subsecentryfonts{\textfonts}
        !          5926: \def\subsubsecentryfonts{\textfonts}
        !          5927: 
        !          5928: 
        !          5929: \message{environments,}
        !          5930: % @foo ... @end foo.
        !          5931: 
        !          5932: % @tex ... @end tex    escapes into raw Tex temporarily.
        !          5933: % One exception: @ is still an escape character, so that @end tex works.
        !          5934: % But \@ or @@ will get a plain tex @ character.
        !          5935: 
        !          5936: \envdef\tex{%
        !          5937:   \setupmarkupstyle{tex}%
        !          5938:   \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
        !          5939:   \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
        !          5940:   \catcode `\^=7 \catcode `\_=8 \catcode `\~=\active \let~=\tie
        !          5941:   \catcode `\%=14
        !          5942:   \catcode `\+=\other
        !          5943:   \catcode `\"=\other
        !          5944:   \catcode `\|=\other
        !          5945:   \catcode `\<=\other
        !          5946:   \catcode `\>=\other
        !          5947:   \catcode`\`=\other
        !          5948:   \catcode`\'=\other
        !          5949:   \escapechar=`\\
        !          5950:   %
        !          5951:   \let\b=\ptexb
        !          5952:   \let\bullet=\ptexbullet
        !          5953:   \let\c=\ptexc
        !          5954:   \let\,=\ptexcomma
        !          5955:   \let\.=\ptexdot
        !          5956:   \let\dots=\ptexdots
        !          5957:   \let\equiv=\ptexequiv
        !          5958:   \let\!=\ptexexclam
        !          5959:   \let\i=\ptexi
        !          5960:   \let\indent=\ptexindent
        !          5961:   \let\noindent=\ptexnoindent
        !          5962:   \let\{=\ptexlbrace
        !          5963:   \let\+=\tabalign
        !          5964:   \let\}=\ptexrbrace
        !          5965:   \let\/=\ptexslash
        !          5966:   \let\*=\ptexstar
        !          5967:   \let\t=\ptext
        !          5968:   \expandafter \let\csname top\endcsname=\ptextop  % outer
        !          5969:   \let\frenchspacing=\plainfrenchspacing
        !          5970:   %
        !          5971:   \def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}%
        !          5972:   \def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}%
        !          5973:   \def\@{@}%
        !          5974: }
        !          5975: % There is no need to define \Etex.
        !          5976: 
        !          5977: % Define @lisp ... @end lisp.
        !          5978: % @lisp environment forms a group so it can rebind things,
        !          5979: % including the definition of @end lisp (which normally is erroneous).
        !          5980: 
        !          5981: % Amount to narrow the margins by for @lisp.
        !          5982: \newskip\lispnarrowing \lispnarrowing=0.4in
        !          5983: 
        !          5984: % This is the definition that ^^M gets inside @lisp, @example, and other
        !          5985: % such environments.  \null is better than a space, since it doesn't
        !          5986: % have any width.
        !          5987: \def\lisppar{\null\endgraf}
        !          5988: 
        !          5989: % This space is always present above and below environments.
        !          5990: \newskip\envskipamount \envskipamount = 0pt
        !          5991: 
        !          5992: % Make spacing and below environment symmetrical.  We use \parskip here
        !          5993: % to help in doing that, since in @example-like environments \parskip
        !          5994: % is reset to zero; thus the \afterenvbreak inserts no space -- but the
        !          5995: % start of the next paragraph will insert \parskip.
        !          5996: %
        !          5997: \def\aboveenvbreak{{%
        !          5998:   % =10000 instead of <10000 because of a special case in \itemzzz and
        !          5999:   % \sectionheading, q.v.
        !          6000:   \ifnum \lastpenalty=10000 \else
        !          6001:     \advance\envskipamount by \parskip
        !          6002:     \endgraf
        !          6003:     \ifdim\lastskip<\envskipamount
        !          6004:       \removelastskip
        !          6005:       % it's not a good place to break if the last penalty was \nobreak
        !          6006:       % or better ...
        !          6007:       \ifnum\lastpenalty<10000 \penalty-50 \fi
        !          6008:       \vskip\envskipamount
        !          6009:     \fi
        !          6010:   \fi
        !          6011: }}
        !          6012: 
        !          6013: \let\afterenvbreak = \aboveenvbreak
        !          6014: 
        !          6015: % \nonarrowing is a flag.  If "set", @lisp etc don't narrow margins; it will
        !          6016: % also clear it, so that its embedded environments do the narrowing again.
        !          6017: \let\nonarrowing=\relax
        !          6018: 
        !          6019: % @cartouche ... @end cartouche: draw rectangle w/rounded corners around
        !          6020: % environment contents.
        !          6021: \font\circle=lcircle10
        !          6022: \newdimen\circthick
        !          6023: \newdimen\cartouter\newdimen\cartinner
        !          6024: \newskip\normbskip\newskip\normpskip\newskip\normlskip
        !          6025: \circthick=\fontdimen8\circle
        !          6026: %
        !          6027: \def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
        !          6028: \def\ctr{{\hskip 6pt\circle\char'010}}
        !          6029: \def\cbl{{\circle\char'012\hskip -6pt}}
        !          6030: \def\cbr{{\hskip 6pt\circle\char'011}}
        !          6031: \def\carttop{\hbox to \cartouter{\hskip\lskip
        !          6032:         \ctl\leaders\hrule height\circthick\hfil\ctr
        !          6033:         \hskip\rskip}}
        !          6034: \def\cartbot{\hbox to \cartouter{\hskip\lskip
        !          6035:         \cbl\leaders\hrule height\circthick\hfil\cbr
        !          6036:         \hskip\rskip}}
        !          6037: %
        !          6038: \newskip\lskip\newskip\rskip
        !          6039: 
        !          6040: \envdef\cartouche{%
        !          6041:   \ifhmode\par\fi  % can't be in the midst of a paragraph.
        !          6042:   \startsavinginserts
        !          6043:   \lskip=\leftskip \rskip=\rightskip
        !          6044:   \leftskip=0pt\rightskip=0pt % we want these *outside*.
        !          6045:   \cartinner=\hsize \advance\cartinner by-\lskip
        !          6046:   \advance\cartinner by-\rskip
        !          6047:   \cartouter=\hsize
        !          6048:   \advance\cartouter by 18.4pt % allow for 3pt kerns on either
        !          6049:                                % side, and for 6pt waste from
        !          6050:                                % each corner char, and rule thickness
        !          6051:   \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
        !          6052:   % Flag to tell @lisp, etc., not to narrow margin.
        !          6053:   \let\nonarrowing = t%
        !          6054:   \vbox\bgroup
        !          6055:       \baselineskip=0pt\parskip=0pt\lineskip=0pt
        !          6056:       \carttop
        !          6057:       \hbox\bgroup
        !          6058:          \hskip\lskip
        !          6059:          \vrule\kern3pt
        !          6060:          \vbox\bgroup
        !          6061:              \kern3pt
        !          6062:              \hsize=\cartinner
        !          6063:              \baselineskip=\normbskip
        !          6064:              \lineskip=\normlskip
        !          6065:              \parskip=\normpskip
        !          6066:              \vskip -\parskip
        !          6067:              \comment % For explanation, see the end of \def\group.
        !          6068: }
        !          6069: \def\Ecartouche{%
        !          6070:               \ifhmode\par\fi
        !          6071:              \kern3pt
        !          6072:          \egroup
        !          6073:          \kern3pt\vrule
        !          6074:          \hskip\rskip
        !          6075:       \egroup
        !          6076:       \cartbot
        !          6077:   \egroup
        !          6078:   \checkinserts
        !          6079: }
        !          6080: 
        !          6081: 
        !          6082: % This macro is called at the beginning of all the @example variants,
        !          6083: % inside a group.
        !          6084: \newdimen\nonfillparindent
        !          6085: \def\nonfillstart{%
        !          6086:   \aboveenvbreak
        !          6087:   \hfuzz = 12pt % Don't be fussy
        !          6088:   \sepspaces % Make spaces be word-separators rather than space tokens.
        !          6089:   \let\par = \lisppar % don't ignore blank lines
        !          6090:   \obeylines % each line of input is a line of output
        !          6091:   \parskip = 0pt
        !          6092:   % Turn off paragraph indentation but redefine \indent to emulate
        !          6093:   % the normal \indent.
        !          6094:   \nonfillparindent=\parindent
        !          6095:   \parindent = 0pt
        !          6096:   \let\indent\nonfillindent
        !          6097:   %
        !          6098:   \emergencystretch = 0pt % don't try to avoid overfull boxes
        !          6099:   \ifx\nonarrowing\relax
        !          6100:     \advance \leftskip by \lispnarrowing
        !          6101:     \exdentamount=\lispnarrowing
        !          6102:   \else
        !          6103:     \let\nonarrowing = \relax
        !          6104:   \fi
        !          6105:   \let\exdent=\nofillexdent
        !          6106: }
        !          6107: 
        !          6108: \begingroup
        !          6109: \obeyspaces
        !          6110: % We want to swallow spaces (but not other tokens) after the fake
        !          6111: % @indent in our nonfill-environments, where spaces are normally
        !          6112: % active and set to @tie, resulting in them not being ignored after
        !          6113: % @indent.
        !          6114: \gdef\nonfillindent{\futurelet\temp\nonfillindentcheck}%
        !          6115: \gdef\nonfillindentcheck{%
        !          6116: \ifx\temp %
        !          6117: \expandafter\nonfillindentgobble%
        !          6118: \else%
        !          6119: \leavevmode\nonfillindentbox%
        !          6120: \fi%
        !          6121: }%
        !          6122: \endgroup
        !          6123: \def\nonfillindentgobble#1{\nonfillindent}
        !          6124: \def\nonfillindentbox{\hbox to \nonfillparindent{\hss}}
        !          6125: 
        !          6126: % If you want all examples etc. small: @set dispenvsize small.
        !          6127: % If you want even small examples the full size: @set dispenvsize nosmall.
        !          6128: % This affects the following displayed environments:
        !          6129: %    @example, @display, @format, @lisp
        !          6130: %
        !          6131: \def\smallword{small}
        !          6132: \def\nosmallword{nosmall}
        !          6133: \let\SETdispenvsize\relax
        !          6134: \def\setnormaldispenv{%
        !          6135:   \ifx\SETdispenvsize\smallword
        !          6136:     % end paragraph for sake of leading, in case document has no blank
        !          6137:     % line.  This is redundant with what happens in \aboveenvbreak, but
        !          6138:     % we need to do it before changing the fonts, and it's inconvenient
        !          6139:     % to change the fonts afterward.
        !          6140:     \ifnum \lastpenalty=10000 \else \endgraf \fi
        !          6141:     \smallexamplefonts \rm
        !          6142:   \fi
        !          6143: }
        !          6144: \def\setsmalldispenv{%
        !          6145:   \ifx\SETdispenvsize\nosmallword
        !          6146:   \else
        !          6147:     \ifnum \lastpenalty=10000 \else \endgraf \fi
        !          6148:     \smallexamplefonts \rm
        !          6149:   \fi
        !          6150: }
        !          6151: 
        !          6152: % We often define two environments, @foo and @smallfoo.
        !          6153: % Let's do it by one command:
        !          6154: \def\makedispenv #1#2{
        !          6155:   \expandafter\envdef\csname#1\endcsname {\setnormaldispenv #2}
        !          6156:   \expandafter\envdef\csname small#1\endcsname {\setsmalldispenv #2}
        !          6157:   \expandafter\let\csname E#1\endcsname \afterenvbreak
        !          6158:   \expandafter\let\csname Esmall#1\endcsname \afterenvbreak
        !          6159: }
        !          6160: 
        !          6161: % Define two synonyms:
        !          6162: \def\maketwodispenvs #1#2#3{
        !          6163:   \makedispenv{#1}{#3}
        !          6164:   \makedispenv{#2}{#3}
        !          6165: }
        !          6166: 
        !          6167: % @lisp: indented, narrowed, typewriter font; @example: same as @lisp.
        !          6168: %
        !          6169: % @smallexample and @smalllisp: use smaller fonts.
        !          6170: % Originally contributed by Pavel@xerox.
        !          6171: %
        !          6172: \maketwodispenvs {lisp}{example}{%
        !          6173:   \nonfillstart
        !          6174:   \tt\setupmarkupstyle{example}%
        !          6175:   \let\kbdfont = \kbdexamplefont % Allow @kbd to do something special.
        !          6176:   \gobble       % eat return
        !          6177: }
        !          6178: % @display/@smalldisplay: same as @lisp except keep current font.
        !          6179: %
        !          6180: \makedispenv {display}{%
        !          6181:   \nonfillstart
        !          6182:   \gobble
        !          6183: }
        !          6184: 
        !          6185: % @format/@smallformat: same as @display except don't narrow margins.
        !          6186: %
        !          6187: \makedispenv{format}{%
        !          6188:   \let\nonarrowing = t%
        !          6189:   \nonfillstart
        !          6190:   \gobble
        !          6191: }
        !          6192: 
        !          6193: % @flushleft: same as @format, but doesn't obey \SETdispenvsize.
        !          6194: \envdef\flushleft{%
        !          6195:   \let\nonarrowing = t%
        !          6196:   \nonfillstart
        !          6197:   \gobble
        !          6198: }
        !          6199: \let\Eflushleft = \afterenvbreak
        !          6200: 
        !          6201: % @flushright.
        !          6202: %
        !          6203: \envdef\flushright{%
        !          6204:   \let\nonarrowing = t%
        !          6205:   \nonfillstart
        !          6206:   \advance\leftskip by 0pt plus 1fill
        !          6207:   \gobble
        !          6208: }
        !          6209: \let\Eflushright = \afterenvbreak
        !          6210: 
        !          6211: 
        !          6212: % @raggedright does more-or-less normal line breaking but no right
        !          6213: % justification.  From plain.tex.
        !          6214: \envdef\raggedright{%
        !          6215:   \rightskip0pt plus2em \spaceskip.3333em \xspaceskip.5em\relax
        !          6216: }
        !          6217: \let\Eraggedright\par
        !          6218: 
        !          6219: \envdef\raggedleft{%
        !          6220:   \parindent=0pt \leftskip0pt plus2em
        !          6221:   \spaceskip.3333em \xspaceskip.5em \parfillskip=0pt
        !          6222:   \hbadness=10000 % Last line will usually be underfull, so turn off
        !          6223:                   % badness reporting.
        !          6224: }
        !          6225: \let\Eraggedleft\par
        !          6226: 
        !          6227: \envdef\raggedcenter{%
        !          6228:   \parindent=0pt \rightskip0pt plus1em \leftskip0pt plus1em
        !          6229:   \spaceskip.3333em \xspaceskip.5em \parfillskip=0pt
        !          6230:   \hbadness=10000 % Last line will usually be underfull, so turn off
        !          6231:                   % badness reporting.
        !          6232: }
        !          6233: \let\Eraggedcenter\par
        !          6234: 
        !          6235: 
        !          6236: % @quotation does normal linebreaking (hence we can't use \nonfillstart)
        !          6237: % and narrows the margins.  We keep \parskip nonzero in general, since
        !          6238: % we're doing normal filling.  So, when using \aboveenvbreak and
        !          6239: % \afterenvbreak, temporarily make \parskip 0.
        !          6240: %
        !          6241: \def\quotationstart{%
        !          6242:   {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip
        !          6243:   \parindent=0pt
        !          6244:   %
        !          6245:   % @cartouche defines \nonarrowing to inhibit narrowing at next level down.
        !          6246:   \ifx\nonarrowing\relax
        !          6247:     \advance\leftskip by \lispnarrowing
        !          6248:     \advance\rightskip by \lispnarrowing
        !          6249:     \exdentamount = \lispnarrowing
        !          6250:   \else
        !          6251:     \let\nonarrowing = \relax
        !          6252:   \fi
        !          6253:   \parsearg\quotationlabel
        !          6254: }
        !          6255: 
        !          6256: \envdef\quotation{%
        !          6257:   \setnormaldispenv
        !          6258:   \quotationstart
        !          6259: }
        !          6260: 
        !          6261: \envdef\smallquotation{%
        !          6262:   \setsmalldispenv
        !          6263:   \quotationstart
        !          6264: }
        !          6265: \let\Esmallquotation = \Equotation
        !          6266: 
        !          6267: % We have retained a nonzero parskip for the environment, since we're
        !          6268: % doing normal filling.
        !          6269: %
        !          6270: \def\Equotation{%
        !          6271:   \par
        !          6272:   \ifx\quotationauthor\undefined\else
        !          6273:     % indent a bit.
        !          6274:     \leftline{\kern 2\leftskip \sl ---\quotationauthor}%
        !          6275:   \fi
        !          6276:   {\parskip=0pt \afterenvbreak}%
        !          6277: }
        !          6278: 
        !          6279: % If we're given an argument, typeset it in bold with a colon after.
        !          6280: \def\quotationlabel#1{%
        !          6281:   \def\temp{#1}%
        !          6282:   \ifx\temp\empty \else
        !          6283:     {\bf #1: }%
        !          6284:   \fi
        !          6285: }
        !          6286: 
        !          6287: 
        !          6288: % LaTeX-like @verbatim...@end verbatim and @verb{<char>...<char>}
        !          6289: % If we want to allow any <char> as delimiter,
        !          6290: % we need the curly braces so that makeinfo sees the @verb command, eg:
        !          6291: % `@verbx...x' would look like the '@verbx' command.  --janneke@gnu.org
        !          6292: %
        !          6293: % [Knuth]: Donald Ervin Knuth, 1996.  The TeXbook.
        !          6294: %
        !          6295: % [Knuth] p.344; only we need to do the other characters Texinfo sets
        !          6296: % active too.  Otherwise, they get lost as the first character on a
        !          6297: % verbatim line.
        !          6298: \def\dospecials{%
        !          6299:   \do\ \do\\\do\{\do\}\do\$\do\&%
        !          6300:   \do\#\do\^\do\^^K\do\_\do\^^A\do\%\do\~%
        !          6301:   \do\<\do\>\do\|\do\@\do+\do\"%
        !          6302:   % Don't do the quotes -- if we do, @set txicodequoteundirected and
        !          6303:   % @set txicodequotebacktick will not have effect on @verb and
        !          6304:   % @verbatim, and ?` and !` ligatures won't get disabled.
        !          6305:   %\do\`\do\'%
        !          6306: }
        !          6307: %
        !          6308: % [Knuth] p. 380
        !          6309: \def\uncatcodespecials{%
        !          6310:   \def\do##1{\catcode`##1=\other}\dospecials}
        !          6311: %
        !          6312: % Setup for the @verb command.
        !          6313: %
        !          6314: % Eight spaces for a tab
        !          6315: \begingroup
        !          6316:   \catcode`\^^I=\active
        !          6317:   \gdef\tabeightspaces{\catcode`\^^I=\active\def^^I{\ \ \ \ \ \ \ \ }}
        !          6318: \endgroup
        !          6319: %
        !          6320: \def\setupverb{%
        !          6321:   \tt  % easiest (and conventionally used) font for verbatim
        !          6322:   \def\par{\leavevmode\endgraf}%
        !          6323:   \setupmarkupstyle{verb}%
        !          6324:   \tabeightspaces
        !          6325:   % Respect line breaks,
        !          6326:   % print special symbols as themselves, and
        !          6327:   % make each space count
        !          6328:   % must do in this order:
        !          6329:   \obeylines \uncatcodespecials \sepspaces
        !          6330: }
        !          6331: 
        !          6332: % Setup for the @verbatim environment
        !          6333: %
        !          6334: % Real tab expansion
        !          6335: \newdimen\tabw \setbox0=\hbox{\tt\space} \tabw=8\wd0 % tab amount
        !          6336: %
        !          6337: \def\starttabbox{\setbox0=\hbox\bgroup}
        !          6338: %
        !          6339: \begingroup
        !          6340:   \catcode`\^^I=\active
        !          6341:   \gdef\tabexpand{%
        !          6342:     \catcode`\^^I=\active
        !          6343:     \def^^I{\leavevmode\egroup
        !          6344:       \dimen0=\wd0 % the width so far, or since the previous tab
        !          6345:       \divide\dimen0 by\tabw
        !          6346:       \multiply\dimen0 by\tabw % compute previous multiple of \tabw
        !          6347:       \advance\dimen0 by\tabw  % advance to next multiple of \tabw
        !          6348:       \wd0=\dimen0 \box0 \starttabbox
        !          6349:     }%
        !          6350:   }
        !          6351: \endgroup
        !          6352: 
        !          6353: % start the verbatim environment.
        !          6354: \def\setupverbatim{%
        !          6355:   \let\nonarrowing = t%
        !          6356:   \nonfillstart
        !          6357:   % Easiest (and conventionally used) font for verbatim
        !          6358:   \tt
        !          6359:   \def\par{\leavevmode\egroup\box0\endgraf}%
        !          6360:   \tabexpand
        !          6361:   \setupmarkupstyle{verbatim}%
        !          6362:   % Respect line breaks,
        !          6363:   % print special symbols as themselves, and
        !          6364:   % make each space count
        !          6365:   % must do in this order:
        !          6366:   \obeylines \uncatcodespecials \sepspaces
        !          6367:   \everypar{\starttabbox}%
        !          6368: }
        !          6369: 
        !          6370: % Do the @verb magic: verbatim text is quoted by unique
        !          6371: % delimiter characters.  Before first delimiter expect a
        !          6372: % right brace, after last delimiter expect closing brace:
        !          6373: %
        !          6374: %    \def\doverb'{'<char>#1<char>'}'{#1}
        !          6375: %
        !          6376: % [Knuth] p. 382; only eat outer {}
        !          6377: \begingroup
        !          6378:   \catcode`[=1\catcode`]=2\catcode`\{=\other\catcode`\}=\other
        !          6379:   \gdef\doverb{#1[\def\next##1#1}[##1\endgroup]\next]
        !          6380: \endgroup
        !          6381: %
        !          6382: \def\verb{\begingroup\setupverb\doverb}
        !          6383: %
        !          6384: %
        !          6385: % Do the @verbatim magic: define the macro \doverbatim so that
        !          6386: % the (first) argument ends when '@end verbatim' is reached, ie:
        !          6387: %
        !          6388: %     \def\doverbatim#1@end verbatim{#1}
        !          6389: %
        !          6390: % For Texinfo it's a lot easier than for LaTeX,
        !          6391: % because texinfo's \verbatim doesn't stop at '\end{verbatim}':
        !          6392: % we need not redefine '\', '{' and '}'.
        !          6393: %
        !          6394: % Inspired by LaTeX's verbatim command set [latex.ltx]
        !          6395: %
        !          6396: \begingroup
        !          6397:   \catcode`\ =\active
        !          6398:   \obeylines %
        !          6399:   % ignore everything up to the first ^^M, that's the newline at the end
        !          6400:   % of the @verbatim input line itself.  Otherwise we get an extra blank
        !          6401:   % line in the output.
        !          6402:   \xdef\doverbatim#1^^M#2@end verbatim{#2\noexpand\end\gobble verbatim}%
        !          6403:   % We really want {...\end verbatim} in the body of the macro, but
        !          6404:   % without the active space; thus we have to use \xdef and \gobble.
        !          6405: \endgroup
        !          6406: %
        !          6407: \envdef\verbatim{%
        !          6408:     \setupverbatim\doverbatim
        !          6409: }
        !          6410: \let\Everbatim = \afterenvbreak
        !          6411: 
        !          6412: 
        !          6413: % @verbatiminclude FILE - insert text of file in verbatim environment.
        !          6414: %
        !          6415: \def\verbatiminclude{\parseargusing\filenamecatcodes\doverbatiminclude}
        !          6416: %
        !          6417: \def\doverbatiminclude#1{%
        !          6418:   {%
        !          6419:     \makevalueexpandable
        !          6420:     \setupverbatim
        !          6421:     \indexnofonts       % Allow `@@' and other weird things in file names.
        !          6422:     \input #1
        !          6423:     \afterenvbreak
        !          6424:   }%
        !          6425: }
        !          6426: 
        !          6427: % @copying ... @end copying.
        !          6428: % Save the text away for @insertcopying later.
        !          6429: %
        !          6430: % We save the uninterpreted tokens, rather than creating a box.
        !          6431: % Saving the text in a box would be much easier, but then all the
        !          6432: % typesetting commands (@smallbook, font changes, etc.) have to be done
        !          6433: % beforehand -- and a) we want @copying to be done first in the source
        !          6434: % file; b) letting users define the frontmatter in as flexible order as
        !          6435: % possible is very desirable.
        !          6436: %
        !          6437: \def\copying{\checkenv{}\begingroup\scanargctxt\docopying}
        !          6438: \def\docopying#1@end copying{\endgroup\def\copyingtext{#1}}
        !          6439: %
        !          6440: \def\insertcopying{%
        !          6441:   \begingroup
        !          6442:     \parindent = 0pt  % paragraph indentation looks wrong on title page
        !          6443:     \scanexp\copyingtext
        !          6444:   \endgroup
        !          6445: }
        !          6446: 
        !          6447: 
        !          6448: \message{defuns,}
        !          6449: % @defun etc.
        !          6450: 
        !          6451: \newskip\defbodyindent \defbodyindent=.4in
        !          6452: \newskip\defargsindent \defargsindent=50pt
        !          6453: \newskip\deflastargmargin \deflastargmargin=18pt
        !          6454: \newcount\defunpenalty
        !          6455: 
        !          6456: % Start the processing of @deffn:
        !          6457: \def\startdefun{%
        !          6458:   \ifnum\lastpenalty<10000
        !          6459:     \medbreak
        !          6460:     \defunpenalty=10003 % Will keep this @deffn together with the
        !          6461:                         % following @def command, see below.
        !          6462:   \else
        !          6463:     % If there are two @def commands in a row, we'll have a \nobreak,
        !          6464:     % which is there to keep the function description together with its
        !          6465:     % header.  But if there's nothing but headers, we need to allow a
        !          6466:     % break somewhere.  Check specifically for penalty 10002, inserted
        !          6467:     % by \printdefunline, instead of 10000, since the sectioning
        !          6468:     % commands also insert a nobreak penalty, and we don't want to allow
        !          6469:     % a break between a section heading and a defun.
        !          6470:     %
        !          6471:     % As a minor refinement, we avoid "club" headers by signalling
        !          6472:     % with penalty of 10003 after the very first @deffn in the
        !          6473:     % sequence (see above), and penalty of 10002 after any following
        !          6474:     % @def command.
        !          6475:     \ifnum\lastpenalty=10002 \penalty2000 \else \defunpenalty=10002 \fi
        !          6476:     %
        !          6477:     % Similarly, after a section heading, do not allow a break.
        !          6478:     % But do insert the glue.
        !          6479:     \medskip  % preceded by discardable penalty, so not a breakpoint
        !          6480:   \fi
        !          6481:   %
        !          6482:   \parindent=0in
        !          6483:   \advance\leftskip by \defbodyindent
        !          6484:   \exdentamount=\defbodyindent
        !          6485: }
        !          6486: 
        !          6487: \def\dodefunx#1{%
        !          6488:   % First, check whether we are in the right environment:
        !          6489:   \checkenv#1%
        !          6490:   %
        !          6491:   % As above, allow line break if we have multiple x headers in a row.
        !          6492:   % It's not a great place, though.
        !          6493:   \ifnum\lastpenalty=10002 \penalty3000 \else \defunpenalty=10002 \fi
        !          6494:   %
        !          6495:   % And now, it's time to reuse the body of the original defun:
        !          6496:   \expandafter\gobbledefun#1%
        !          6497: }
        !          6498: \def\gobbledefun#1\startdefun{}
        !          6499: 
        !          6500: % \printdefunline \deffnheader{text}
        !          6501: %
        !          6502: \def\printdefunline#1#2{%
        !          6503:   \begingroup
        !          6504:     % call \deffnheader:
        !          6505:     #1#2 \endheader
        !          6506:     % common ending:
        !          6507:     \interlinepenalty = 10000
        !          6508:     \advance\rightskip by 0pt plus 1fil
        !          6509:     \endgraf
        !          6510:     \nobreak\vskip -\parskip
        !          6511:     \penalty\defunpenalty  % signal to \startdefun and \dodefunx
        !          6512:     % Some of the @defun-type tags do not enable magic parentheses,
        !          6513:     % rendering the following check redundant.  But we don't optimize.
        !          6514:     \checkparencounts
        !          6515:   \endgroup
        !          6516: }
        !          6517: 
        !          6518: \def\Edefun{\endgraf\medbreak}
        !          6519: 
        !          6520: % \makedefun{deffn} creates \deffn, \deffnx and \Edeffn;
        !          6521: % the only thing remaining is to define \deffnheader.
        !          6522: %
        !          6523: \def\makedefun#1{%
        !          6524:   \expandafter\let\csname E#1\endcsname = \Edefun
        !          6525:   \edef\temp{\noexpand\domakedefun
        !          6526:     \makecsname{#1}\makecsname{#1x}\makecsname{#1header}}%
        !          6527:   \temp
        !          6528: }
        !          6529: 
        !          6530: % \domakedefun \deffn \deffnx \deffnheader
        !          6531: %
        !          6532: % Define \deffn and \deffnx, without parameters.
        !          6533: % \deffnheader has to be defined explicitly.
        !          6534: %
        !          6535: \def\domakedefun#1#2#3{%
        !          6536:   \envdef#1{%
        !          6537:     \startdefun
        !          6538:     \parseargusing\activeparens{\printdefunline#3}%
        !          6539:   }%
        !          6540:   \def#2{\dodefunx#1}%
        !          6541:   \def#3%
        !          6542: }
        !          6543: 
        !          6544: %%% Untyped functions:
        !          6545: 
        !          6546: % @deffn category name args
        !          6547: \makedefun{deffn}{\deffngeneral{}}
        !          6548: 
        !          6549: % @deffn category class name args
        !          6550: \makedefun{defop}#1 {\defopon{#1\ \putwordon}}
        !          6551: 
        !          6552: % \defopon {category on}class name args
        !          6553: \def\defopon#1#2 {\deffngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} }
        !          6554: 
        !          6555: % \deffngeneral {subind}category name args
        !          6556: %
        !          6557: \def\deffngeneral#1#2 #3 #4\endheader{%
        !          6558:   % Remember that \dosubind{fn}{foo}{} is equivalent to \doind{fn}{foo}.
        !          6559:   \dosubind{fn}{\code{#3}}{#1}%
        !          6560:   \defname{#2}{}{#3}\magicamp\defunargs{#4\unskip}%
        !          6561: }
        !          6562: 
        !          6563: %%% Typed functions:
        !          6564: 
        !          6565: % @deftypefn category type name args
        !          6566: \makedefun{deftypefn}{\deftypefngeneral{}}
        !          6567: 
        !          6568: % @deftypeop category class type name args
        !          6569: \makedefun{deftypeop}#1 {\deftypeopon{#1\ \putwordon}}
        !          6570: 
        !          6571: % \deftypeopon {category on}class type name args
        !          6572: \def\deftypeopon#1#2 {\deftypefngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} }
        !          6573: 
        !          6574: % \deftypefngeneral {subind}category type name args
        !          6575: %
        !          6576: \def\deftypefngeneral#1#2 #3 #4 #5\endheader{%
        !          6577:   \dosubind{fn}{\code{#4}}{#1}%
        !          6578:   \defname{#2}{#3}{#4}\defunargs{#5\unskip}%
        !          6579: }
        !          6580: 
        !          6581: %%% Typed variables:
        !          6582: 
        !          6583: % @deftypevr category type var args
        !          6584: \makedefun{deftypevr}{\deftypecvgeneral{}}
        !          6585: 
        !          6586: % @deftypecv category class type var args
        !          6587: \makedefun{deftypecv}#1 {\deftypecvof{#1\ \putwordof}}
        !          6588: 
        !          6589: % \deftypecvof {category of}class type var args
        !          6590: \def\deftypecvof#1#2 {\deftypecvgeneral{\putwordof\ \code{#2}}{#1\ \code{#2}} }
        !          6591: 
        !          6592: % \deftypecvgeneral {subind}category type var args
        !          6593: %
        !          6594: \def\deftypecvgeneral#1#2 #3 #4 #5\endheader{%
        !          6595:   \dosubind{vr}{\code{#4}}{#1}%
        !          6596:   \defname{#2}{#3}{#4}\defunargs{#5\unskip}%
        !          6597: }
        !          6598: 
        !          6599: %%% Untyped variables:
        !          6600: 
        !          6601: % @defvr category var args
        !          6602: \makedefun{defvr}#1 {\deftypevrheader{#1} {} }
        !          6603: 
        !          6604: % @defcv category class var args
        !          6605: \makedefun{defcv}#1 {\defcvof{#1\ \putwordof}}
        !          6606: 
        !          6607: % \defcvof {category of}class var args
        !          6608: \def\defcvof#1#2 {\deftypecvof{#1}#2 {} }
        !          6609: 
        !          6610: %%% Type:
        !          6611: % @deftp category name args
        !          6612: \makedefun{deftp}#1 #2 #3\endheader{%
        !          6613:   \doind{tp}{\code{#2}}%
        !          6614:   \defname{#1}{}{#2}\defunargs{#3\unskip}%
        !          6615: }
        !          6616: 
        !          6617: % Remaining @defun-like shortcuts:
        !          6618: \makedefun{defun}{\deffnheader{\putwordDeffunc} }
        !          6619: \makedefun{defmac}{\deffnheader{\putwordDefmac} }
        !          6620: \makedefun{defspec}{\deffnheader{\putwordDefspec} }
        !          6621: \makedefun{deftypefun}{\deftypefnheader{\putwordDeffunc} }
        !          6622: \makedefun{defvar}{\defvrheader{\putwordDefvar} }
        !          6623: \makedefun{defopt}{\defvrheader{\putwordDefopt} }
        !          6624: \makedefun{deftypevar}{\deftypevrheader{\putwordDefvar} }
        !          6625: \makedefun{defmethod}{\defopon\putwordMethodon}
        !          6626: \makedefun{deftypemethod}{\deftypeopon\putwordMethodon}
        !          6627: \makedefun{defivar}{\defcvof\putwordInstanceVariableof}
        !          6628: \makedefun{deftypeivar}{\deftypecvof\putwordInstanceVariableof}
        !          6629: 
        !          6630: % \defname, which formats the name of the @def (not the args).
        !          6631: % #1 is the category, such as "Function".
        !          6632: % #2 is the return type, if any.
        !          6633: % #3 is the function name.
        !          6634: %
        !          6635: % We are followed by (but not passed) the arguments, if any.
        !          6636: %
        !          6637: \def\defname#1#2#3{%
        !          6638:   % Get the values of \leftskip and \rightskip as they were outside the @def...
        !          6639:   \advance\leftskip by -\defbodyindent
        !          6640:   %
        !          6641:   % How we'll format the type name.  Putting it in brackets helps
        !          6642:   % distinguish it from the body text that may end up on the next line
        !          6643:   % just below it.
        !          6644:   \def\temp{#1}%
        !          6645:   \setbox0=\hbox{\kern\deflastargmargin \ifx\temp\empty\else [\rm\temp]\fi}
        !          6646:   %
        !          6647:   % Figure out line sizes for the paragraph shape.
        !          6648:   % The first line needs space for \box0; but if \rightskip is nonzero,
        !          6649:   % we need only space for the part of \box0 which exceeds it:
        !          6650:   \dimen0=\hsize  \advance\dimen0 by -\wd0  \advance\dimen0 by \rightskip
        !          6651:   % The continuations:
        !          6652:   \dimen2=\hsize  \advance\dimen2 by -\defargsindent
        !          6653:   % (plain.tex says that \dimen1 should be used only as global.)
        !          6654:   \parshape 2 0in \dimen0 \defargsindent \dimen2
        !          6655:   %
        !          6656:   % Put the type name to the right margin.
        !          6657:   \noindent
        !          6658:   \hbox to 0pt{%
        !          6659:     \hfil\box0 \kern-\hsize
        !          6660:     % \hsize has to be shortened this way:
        !          6661:     \kern\leftskip
        !          6662:     % Intentionally do not respect \rightskip, since we need the space.
        !          6663:   }%
        !          6664:   %
        !          6665:   % Allow all lines to be underfull without complaint:
        !          6666:   \tolerance=10000 \hbadness=10000
        !          6667:   \exdentamount=\defbodyindent
        !          6668:   {%
        !          6669:     % defun fonts. We use typewriter by default (used to be bold) because:
        !          6670:     % . we're printing identifiers, they should be in tt in principle.
        !          6671:     % . in languages with many accents, such as Czech or French, it's
        !          6672:     %   common to leave accents off identifiers.  The result looks ok in
        !          6673:     %   tt, but exceedingly strange in rm.
        !          6674:     % . we don't want -- and --- to be treated as ligatures.
        !          6675:     % . this still does not fix the ?` and !` ligatures, but so far no
        !          6676:     %   one has made identifiers using them :).
        !          6677:     \df \tt
        !          6678:     \def\temp{#2}% return value type
        !          6679:     \ifx\temp\empty\else \tclose{\temp} \fi
        !          6680:     #3% output function name
        !          6681:   }%
        !          6682:   {\rm\enskip}% hskip 0.5 em of \tenrm
        !          6683:   %
        !          6684:   \boldbrax
        !          6685:   % arguments will be output next, if any.
        !          6686: }
        !          6687: 
        !          6688: % Print arguments in slanted roman (not ttsl), inconsistently with using
        !          6689: % tt for the name.  This is because literal text is sometimes needed in
        !          6690: % the argument list (groff manual), and ttsl and tt are not very
        !          6691: % distinguishable.  Prevent hyphenation at `-' chars.
        !          6692: %
        !          6693: \def\defunargs#1{%
        !          6694:   % use sl by default (not ttsl),
        !          6695:   % tt for the names.
        !          6696:   \df \sl \hyphenchar\font=0
        !          6697:   %
        !          6698:   % On the other hand, if an argument has two dashes (for instance), we
        !          6699:   % want a way to get ttsl.  Let's try @var for that.
        !          6700:   \def\var##1{{\setupmarkupstyle{var}\ttslanted{##1}}}%
        !          6701:   #1%
        !          6702:   \sl\hyphenchar\font=45
        !          6703: }
        !          6704: 
        !          6705: % We want ()&[] to print specially on the defun line.
        !          6706: %
        !          6707: \def\activeparens{%
        !          6708:   \catcode`\(=\active \catcode`\)=\active
        !          6709:   \catcode`\[=\active \catcode`\]=\active
        !          6710:   \catcode`\&=\active
        !          6711: }
        !          6712: 
        !          6713: % Make control sequences which act like normal parenthesis chars.
        !          6714: \let\lparen = ( \let\rparen = )
        !          6715: 
        !          6716: % Be sure that we always have a definition for `(', etc.  For example,
        !          6717: % if the fn name has parens in it, \boldbrax will not be in effect yet,
        !          6718: % so TeX would otherwise complain about undefined control sequence.
        !          6719: {
        !          6720:   \activeparens
        !          6721:   \global\let(=\lparen \global\let)=\rparen
        !          6722:   \global\let[=\lbrack \global\let]=\rbrack
        !          6723:   \global\let& = \&
        !          6724: 
        !          6725:   \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
        !          6726:   \gdef\magicamp{\let&=\amprm}
        !          6727: }
        !          6728: 
        !          6729: \newcount\parencount
        !          6730: 
        !          6731: % If we encounter &foo, then turn on ()-hacking afterwards
        !          6732: \newif\ifampseen
        !          6733: \def\amprm#1 {\ampseentrue{\bf\&#1 }}
        !          6734: 
        !          6735: \def\parenfont{%
        !          6736:   \ifampseen
        !          6737:     % At the first level, print parens in roman,
        !          6738:     % otherwise use the default font.
        !          6739:     \ifnum \parencount=1 \rm \fi
        !          6740:   \else
        !          6741:     % The \sf parens (in \boldbrax) actually are a little bolder than
        !          6742:     % the contained text.  This is especially needed for [ and ] .
        !          6743:     \sf
        !          6744:   \fi
        !          6745: }
        !          6746: \def\infirstlevel#1{%
        !          6747:   \ifampseen
        !          6748:     \ifnum\parencount=1
        !          6749:       #1%
        !          6750:     \fi
        !          6751:   \fi
        !          6752: }
        !          6753: \def\bfafterword#1 {#1 \bf}
        !          6754: 
        !          6755: \def\opnr{%
        !          6756:   \global\advance\parencount by 1
        !          6757:   {\parenfont(}%
        !          6758:   \infirstlevel \bfafterword
        !          6759: }
        !          6760: \def\clnr{%
        !          6761:   {\parenfont)}%
        !          6762:   \infirstlevel \sl
        !          6763:   \global\advance\parencount by -1
        !          6764: }
        !          6765: 
        !          6766: \newcount\brackcount
        !          6767: \def\lbrb{%
        !          6768:   \global\advance\brackcount by 1
        !          6769:   {\bf[}%
        !          6770: }
        !          6771: \def\rbrb{%
        !          6772:   {\bf]}%
        !          6773:   \global\advance\brackcount by -1
        !          6774: }
        !          6775: 
        !          6776: \def\checkparencounts{%
        !          6777:   \ifnum\parencount=0 \else \badparencount \fi
        !          6778:   \ifnum\brackcount=0 \else \badbrackcount \fi
        !          6779: }
        !          6780: % these should not use \errmessage; the glibc manual, at least, actually
        !          6781: % has such constructs (when documenting function pointers).
        !          6782: \def\badparencount{%
        !          6783:   \message{Warning: unbalanced parentheses in @def...}%
        !          6784:   \global\parencount=0
        !          6785: }
        !          6786: \def\badbrackcount{%
        !          6787:   \message{Warning: unbalanced square brackets in @def...}%
        !          6788:   \global\brackcount=0
        !          6789: }
        !          6790: 
        !          6791: 
        !          6792: \message{macros,}
        !          6793: % @macro.
        !          6794: 
        !          6795: % To do this right we need a feature of e-TeX, \scantokens,
        !          6796: % which we arrange to emulate with a temporary file in ordinary TeX.
        !          6797: \ifx\eTeXversion\undefined
        !          6798:   \newwrite\macscribble
        !          6799:   \def\scantokens#1{%
        !          6800:     \toks0={#1}%
        !          6801:     \immediate\openout\macscribble=\jobname.tmp
        !          6802:     \immediate\write\macscribble{\the\toks0}%
        !          6803:     \immediate\closeout\macscribble
        !          6804:     \input \jobname.tmp
        !          6805:   }
        !          6806: \fi
        !          6807: 
        !          6808: \def\scanmacro#1{%
        !          6809:   \begingroup
        !          6810:     \newlinechar`\^^M
        !          6811:     \let\xeatspaces\eatspaces
        !          6812:     % Undo catcode changes of \startcontents and \doprintindex
        !          6813:     % When called from @insertcopying or (short)caption, we need active
        !          6814:     % backslash to get it printed correctly.  Previously, we had
        !          6815:     % \catcode`\\=\other instead.  We'll see whether a problem appears
        !          6816:     % with macro expansion.                            --kasal, 19aug04
        !          6817:     \catcode`\@=0 \catcode`\\=\active \escapechar=`\@
        !          6818:     % ... and \example
        !          6819:     \spaceisspace
        !          6820:     %
        !          6821:     % Append \endinput to make sure that TeX does not see the ending newline.
        !          6822:     % I've verified that it is necessary both for e-TeX and for ordinary TeX
        !          6823:     %                                                  --kasal, 29nov03
        !          6824:     \scantokens{#1\endinput}%
        !          6825:   \endgroup
        !          6826: }
        !          6827: 
        !          6828: \def\scanexp#1{%
        !          6829:   \edef\temp{\noexpand\scanmacro{#1}}%
        !          6830:   \temp
        !          6831: }
        !          6832: 
        !          6833: \newcount\paramno   % Count of parameters
        !          6834: \newtoks\macname    % Macro name
        !          6835: \newif\ifrecursive  % Is it recursive?
        !          6836: 
        !          6837: % List of all defined macros in the form
        !          6838: %    \definedummyword\macro1\definedummyword\macro2...
        !          6839: % Currently is also contains all @aliases; the list can be split
        !          6840: % if there is a need.
        !          6841: \def\macrolist{}
        !          6842: 
        !          6843: % Add the macro to \macrolist
        !          6844: \def\addtomacrolist#1{\expandafter \addtomacrolistxxx \csname#1\endcsname}
        !          6845: \def\addtomacrolistxxx#1{%
        !          6846:      \toks0 = \expandafter{\macrolist\definedummyword#1}%
        !          6847:      \xdef\macrolist{\the\toks0}%
        !          6848: }
        !          6849: 
        !          6850: % Utility routines.
        !          6851: % This does \let #1 = #2, with \csnames; that is,
        !          6852: %   \let \csname#1\endcsname = \csname#2\endcsname
        !          6853: % (except of course we have to play expansion games).
        !          6854: %
        !          6855: \def\cslet#1#2{%
        !          6856:   \expandafter\let
        !          6857:   \csname#1\expandafter\endcsname
        !          6858:   \csname#2\endcsname
        !          6859: }
        !          6860: 
        !          6861: % Trim leading and trailing spaces off a string.
        !          6862: % Concepts from aro-bend problem 15 (see CTAN).
        !          6863: {\catcode`\@=11
        !          6864: \gdef\eatspaces #1{\expandafter\trim@\expandafter{#1 }}
        !          6865: \gdef\trim@ #1{\trim@@ @#1 @ #1 @ @@}
        !          6866: \gdef\trim@@ #1@ #2@ #3@@{\trim@@@\empty #2 @}
        !          6867: \def\unbrace#1{#1}
        !          6868: \unbrace{\gdef\trim@@@ #1 } #2@{#1}
        !          6869: }
        !          6870: 
        !          6871: % Trim a single trailing ^^M off a string.
        !          6872: {\catcode`\^^M=\other \catcode`\Q=3%
        !          6873: \gdef\eatcr #1{\eatcra #1Q^^MQ}%
        !          6874: \gdef\eatcra#1^^MQ{\eatcrb#1Q}%
        !          6875: \gdef\eatcrb#1Q#2Q{#1}%
        !          6876: }
        !          6877: 
        !          6878: % Macro bodies are absorbed as an argument in a context where
        !          6879: % all characters are catcode 10, 11 or 12, except \ which is active
        !          6880: % (as in normal texinfo). It is necessary to change the definition of \.
        !          6881: 
        !          6882: % Non-ASCII encodings make 8-bit characters active, so un-activate
        !          6883: % them to avoid their expansion.  Must do this non-globally, to
        !          6884: % confine the change to the current group.
        !          6885: 
        !          6886: % It's necessary to have hard CRs when the macro is executed. This is
        !          6887: % done by  making ^^M (\endlinechar) catcode 12 when reading the macro
        !          6888: % body, and then making it the \newlinechar in \scanmacro.
        !          6889: 
        !          6890: \def\scanctxt{%
        !          6891:   \catcode`\"=\other
        !          6892:   \catcode`\+=\other
        !          6893:   \catcode`\<=\other
        !          6894:   \catcode`\>=\other
        !          6895:   \catcode`\@=\other
        !          6896:   \catcode`\^=\other
        !          6897:   \catcode`\_=\other
        !          6898:   \catcode`\|=\other
        !          6899:   \catcode`\~=\other
        !          6900:   \ifx\declaredencoding\ascii \else \setnonasciicharscatcodenonglobal\other \fi
        !          6901: }
        !          6902: 
        !          6903: \def\scanargctxt{%
        !          6904:   \scanctxt
        !          6905:   \catcode`\\=\other
        !          6906:   \catcode`\^^M=\other
        !          6907: }
        !          6908: 
        !          6909: \def\macrobodyctxt{%
        !          6910:   \scanctxt
        !          6911:   \catcode`\{=\other
        !          6912:   \catcode`\}=\other
        !          6913:   \catcode`\^^M=\other
        !          6914:   \usembodybackslash
        !          6915: }
        !          6916: 
        !          6917: \def\macroargctxt{%
        !          6918:   \scanctxt
        !          6919:   \catcode`\\=\other
        !          6920: }
        !          6921: 
        !          6922: % \mbodybackslash is the definition of \ in @macro bodies.
        !          6923: % It maps \foo\ => \csname macarg.foo\endcsname => #N
        !          6924: % where N is the macro parameter number.
        !          6925: % We define \csname macarg.\endcsname to be \realbackslash, so
        !          6926: % \\ in macro replacement text gets you a backslash.
        !          6927: 
        !          6928: {\catcode`@=0 @catcode`@\=@active
        !          6929:  @gdef@usembodybackslash{@let\=@mbodybackslash}
        !          6930:  @gdef@mbodybackslash#1\{@csname macarg.#1@endcsname}
        !          6931: }
        !          6932: \expandafter\def\csname macarg.\endcsname{\realbackslash}
        !          6933: 
        !          6934: \def\macro{\recursivefalse\parsearg\macroxxx}
        !          6935: \def\rmacro{\recursivetrue\parsearg\macroxxx}
        !          6936: 
        !          6937: \def\macroxxx#1{%
        !          6938:   \getargs{#1}%           now \macname is the macname and \argl the arglist
        !          6939:   \ifx\argl\empty       % no arguments
        !          6940:      \paramno=0%
        !          6941:   \else
        !          6942:      \expandafter\parsemargdef \argl;%
        !          6943:   \fi
        !          6944:   \if1\csname ismacro.\the\macname\endcsname
        !          6945:      \message{Warning: redefining \the\macname}%
        !          6946:   \else
        !          6947:      \expandafter\ifx\csname \the\macname\endcsname \relax
        !          6948:      \else \errmessage{Macro name \the\macname\space already defined}\fi
        !          6949:      \global\cslet{macsave.\the\macname}{\the\macname}%
        !          6950:      \global\expandafter\let\csname ismacro.\the\macname\endcsname=1%
        !          6951:      \addtomacrolist{\the\macname}%
        !          6952:   \fi
        !          6953:   \begingroup \macrobodyctxt
        !          6954:   \ifrecursive \expandafter\parsermacbody
        !          6955:   \else \expandafter\parsemacbody
        !          6956:   \fi}
        !          6957: 
        !          6958: \parseargdef\unmacro{%
        !          6959:   \if1\csname ismacro.#1\endcsname
        !          6960:     \global\cslet{#1}{macsave.#1}%
        !          6961:     \global\expandafter\let \csname ismacro.#1\endcsname=0%
        !          6962:     % Remove the macro name from \macrolist:
        !          6963:     \begingroup
        !          6964:       \expandafter\let\csname#1\endcsname \relax
        !          6965:       \let\definedummyword\unmacrodo
        !          6966:       \xdef\macrolist{\macrolist}%
        !          6967:     \endgroup
        !          6968:   \else
        !          6969:     \errmessage{Macro #1 not defined}%
        !          6970:   \fi
        !          6971: }
        !          6972: 
        !          6973: % Called by \do from \dounmacro on each macro.  The idea is to omit any
        !          6974: % macro definitions that have been changed to \relax.
        !          6975: %
        !          6976: \def\unmacrodo#1{%
        !          6977:   \ifx #1\relax
        !          6978:     % remove this
        !          6979:   \else
        !          6980:     \noexpand\definedummyword \noexpand#1%
        !          6981:   \fi
        !          6982: }
        !          6983: 
        !          6984: % This makes use of the obscure feature that if the last token of a
        !          6985: % <parameter list> is #, then the preceding argument is delimited by
        !          6986: % an opening brace, and that opening brace is not consumed.
        !          6987: \def\getargs#1{\getargsxxx#1{}}
        !          6988: \def\getargsxxx#1#{\getmacname #1 \relax\getmacargs}
        !          6989: \def\getmacname #1 #2\relax{\macname={#1}}
        !          6990: \def\getmacargs#1{\def\argl{#1}}
        !          6991: 
        !          6992: % Parse the optional {params} list.  Set up \paramno and \paramlist
        !          6993: % so \defmacro knows what to do.  Define \macarg.blah for each blah
        !          6994: % in the params list, to be ##N where N is the position in that list.
        !          6995: % That gets used by \mbodybackslash (above).
        !          6996: 
        !          6997: % We need to get `macro parameter char #' into several definitions.
        !          6998: % The technique used is stolen from LaTeX:  let \hash be something
        !          6999: % unexpandable, insert that wherever you need a #, and then redefine
        !          7000: % it to # just before using the token list produced.
        !          7001: %
        !          7002: % The same technique is used to protect \eatspaces till just before
        !          7003: % the macro is used.
        !          7004: 
        !          7005: \def\parsemargdef#1;{\paramno=0\def\paramlist{}%
        !          7006:         \let\hash\relax\let\xeatspaces\relax\parsemargdefxxx#1,;,}
        !          7007: \def\parsemargdefxxx#1,{%
        !          7008:   \if#1;\let\next=\relax
        !          7009:   \else \let\next=\parsemargdefxxx
        !          7010:     \advance\paramno by 1%
        !          7011:     \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname
        !          7012:         {\xeatspaces{\hash\the\paramno}}%
        !          7013:     \edef\paramlist{\paramlist\hash\the\paramno,}%
        !          7014:   \fi\next}
        !          7015: 
        !          7016: % These two commands read recursive and nonrecursive macro bodies.
        !          7017: % (They're different since rec and nonrec macros end differently.)
        !          7018: 
        !          7019: \long\def\parsemacbody#1@end macro%
        !          7020: {\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
        !          7021: \long\def\parsermacbody#1@end rmacro%
        !          7022: {\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
        !          7023: 
        !          7024: % This defines the macro itself. There are six cases: recursive and
        !          7025: % nonrecursive macros of zero, one, and many arguments.
        !          7026: % Much magic with \expandafter here.
        !          7027: % \xdef is used so that macro definitions will survive the file
        !          7028: % they're defined in; @include reads the file inside a group.
        !          7029: \def\defmacro{%
        !          7030:   \let\hash=##% convert placeholders to macro parameter chars
        !          7031:   \ifrecursive
        !          7032:     \ifcase\paramno
        !          7033:     % 0
        !          7034:       \expandafter\xdef\csname\the\macname\endcsname{%
        !          7035:         \noexpand\scanmacro{\temp}}%
        !          7036:     \or % 1
        !          7037:       \expandafter\xdef\csname\the\macname\endcsname{%
        !          7038:          \bgroup\noexpand\macroargctxt
        !          7039:          \noexpand\braceorline
        !          7040:          \expandafter\noexpand\csname\the\macname xxx\endcsname}%
        !          7041:       \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
        !          7042:          \egroup\noexpand\scanmacro{\temp}}%
        !          7043:     \else % many
        !          7044:       \expandafter\xdef\csname\the\macname\endcsname{%
        !          7045:          \bgroup\noexpand\macroargctxt
        !          7046:          \noexpand\csname\the\macname xx\endcsname}%
        !          7047:       \expandafter\xdef\csname\the\macname xx\endcsname##1{%
        !          7048:           \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}%
        !          7049:       \expandafter\expandafter
        !          7050:       \expandafter\xdef
        !          7051:       \expandafter\expandafter
        !          7052:         \csname\the\macname xxx\endcsname
        !          7053:           \paramlist{\egroup\noexpand\scanmacro{\temp}}%
        !          7054:     \fi
        !          7055:   \else
        !          7056:     \ifcase\paramno
        !          7057:     % 0
        !          7058:       \expandafter\xdef\csname\the\macname\endcsname{%
        !          7059:         \noexpand\norecurse{\the\macname}%
        !          7060:         \noexpand\scanmacro{\temp}\egroup}%
        !          7061:     \or % 1
        !          7062:       \expandafter\xdef\csname\the\macname\endcsname{%
        !          7063:          \bgroup\noexpand\macroargctxt
        !          7064:          \noexpand\braceorline
        !          7065:          \expandafter\noexpand\csname\the\macname xxx\endcsname}%
        !          7066:       \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
        !          7067:         \egroup
        !          7068:         \noexpand\norecurse{\the\macname}%
        !          7069:         \noexpand\scanmacro{\temp}\egroup}%
        !          7070:     \else % many
        !          7071:       \expandafter\xdef\csname\the\macname\endcsname{%
        !          7072:          \bgroup\noexpand\macroargctxt
        !          7073:          \expandafter\noexpand\csname\the\macname xx\endcsname}%
        !          7074:       \expandafter\xdef\csname\the\macname xx\endcsname##1{%
        !          7075:           \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}%
        !          7076:       \expandafter\expandafter
        !          7077:       \expandafter\xdef
        !          7078:       \expandafter\expandafter
        !          7079:       \csname\the\macname xxx\endcsname
        !          7080:       \paramlist{%
        !          7081:           \egroup
        !          7082:           \noexpand\norecurse{\the\macname}%
        !          7083:           \noexpand\scanmacro{\temp}\egroup}%
        !          7084:     \fi
        !          7085:   \fi}
        !          7086: 
        !          7087: \def\norecurse#1{\bgroup\cslet{#1}{macsave.#1}}
        !          7088: 
        !          7089: % \braceorline decides whether the next nonwhitespace character is a
        !          7090: % {.  If so it reads up to the closing }, if not, it reads the whole
        !          7091: % line.  Whatever was read is then fed to the next control sequence
        !          7092: % as an argument (by \parsebrace or \parsearg)
        !          7093: \def\braceorline#1{\let\macnamexxx=#1\futurelet\nchar\braceorlinexxx}
        !          7094: \def\braceorlinexxx{%
        !          7095:   \ifx\nchar\bgroup\else
        !          7096:     \expandafter\parsearg
        !          7097:   \fi \macnamexxx}
        !          7098: 
        !          7099: 
        !          7100: % @alias.
        !          7101: % We need some trickery to remove the optional spaces around the equal
        !          7102: % sign.  Just make them active and then expand them all to nothing.
        !          7103: \def\alias{\parseargusing\obeyspaces\aliasxxx}
        !          7104: \def\aliasxxx #1{\aliasyyy#1\relax}
        !          7105: \def\aliasyyy #1=#2\relax{%
        !          7106:   {%
        !          7107:     \expandafter\let\obeyedspace=\empty
        !          7108:     \addtomacrolist{#1}%
        !          7109:     \xdef\next{\global\let\makecsname{#1}=\makecsname{#2}}%
        !          7110:   }%
        !          7111:   \next
        !          7112: }
        !          7113: 
        !          7114: 
        !          7115: \message{cross references,}
        !          7116: 
        !          7117: \newwrite\auxfile
        !          7118: \newif\ifhavexrefs    % True if xref values are known.
        !          7119: \newif\ifwarnedxrefs  % True if we warned once that they aren't known.
        !          7120: 
        !          7121: % @inforef is relatively simple.
        !          7122: \def\inforef #1{\inforefzzz #1,,,,**}
        !          7123: \def\inforefzzz #1,#2,#3,#4**{\putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}},
        !          7124:   node \samp{\ignorespaces#1{}}}
        !          7125: 
        !          7126: % @node's only job in TeX is to define \lastnode, which is used in
        !          7127: % cross-references.  The @node line might or might not have commas, and
        !          7128: % might or might not have spaces before the first comma, like:
        !          7129: % @node foo , bar , ...
        !          7130: % We don't want such trailing spaces in the node name.
        !          7131: %
        !          7132: \parseargdef\node{\checkenv{}\donode #1 ,\finishnodeparse}
        !          7133: %
        !          7134: % also remove a trailing comma, in case of something like this:
        !          7135: % @node Help-Cross,  ,  , Cross-refs
        !          7136: \def\donode#1 ,#2\finishnodeparse{\dodonode #1,\finishnodeparse}
        !          7137: \def\dodonode#1,#2\finishnodeparse{\gdef\lastnode{#1}}
        !          7138: 
        !          7139: \let\nwnode=\node
        !          7140: \let\lastnode=\empty
        !          7141: 
        !          7142: % Write a cross-reference definition for the current node.  #1 is the
        !          7143: % type (Ynumbered, Yappendix, Ynothing).
        !          7144: %
        !          7145: \def\donoderef#1{%
        !          7146:   \ifx\lastnode\empty\else
        !          7147:     \setref{\lastnode}{#1}%
        !          7148:     \global\let\lastnode=\empty
        !          7149:   \fi
        !          7150: }
        !          7151: 
        !          7152: % @anchor{NAME} -- define xref target at arbitrary point.
        !          7153: %
        !          7154: \newcount\savesfregister
        !          7155: %
        !          7156: \def\savesf{\relax \ifhmode \savesfregister=\spacefactor \fi}
        !          7157: \def\restoresf{\relax \ifhmode \spacefactor=\savesfregister \fi}
        !          7158: \def\anchor#1{\savesf \setref{#1}{Ynothing}\restoresf \ignorespaces}
        !          7159: 
        !          7160: % \setref{NAME}{SNT} defines a cross-reference point NAME (a node or an
        !          7161: % anchor), which consists of three parts:
        !          7162: % 1) NAME-title - the current sectioning name taken from \lastsection,
        !          7163: %                 or the anchor name.
        !          7164: % 2) NAME-snt   - section number and type, passed as the SNT arg, or
        !          7165: %                 empty for anchors.
        !          7166: % 3) NAME-pg    - the page number.
        !          7167: %
        !          7168: % This is called from \donoderef, \anchor, and \dofloat.  In the case of
        !          7169: % floats, there is an additional part, which is not written here:
        !          7170: % 4) NAME-lof   - the text as it should appear in a @listoffloats.
        !          7171: %
        !          7172: \def\setref#1#2{%
        !          7173:   \pdfmkdest{#1}%
        !          7174:   \iflinks
        !          7175:     {%
        !          7176:       \atdummies  % preserve commands, but don't expand them
        !          7177:       \edef\writexrdef##1##2{%
        !          7178:        \write\auxfile{@xrdef{#1-% #1 of \setref, expanded by the \edef
        !          7179:          ##1}{##2}}% these are parameters of \writexrdef
        !          7180:       }%
        !          7181:       \toks0 = \expandafter{\lastsection}%
        !          7182:       \immediate \writexrdef{title}{\the\toks0 }%
        !          7183:       \immediate \writexrdef{snt}{\csname #2\endcsname}% \Ynumbered etc.
        !          7184:       \safewhatsit{\writexrdef{pg}{\folio}}% will be written later, during \shipout
        !          7185:     }%
        !          7186:   \fi
        !          7187: }
        !          7188: 
        !          7189: % @xref, @pxref, and @ref generate cross-references.  For \xrefX, #1 is
        !          7190: % the node name, #2 the name of the Info cross-reference, #3 the printed
        !          7191: % node name, #4 the name of the Info file, #5 the name of the printed
        !          7192: % manual.  All but the node name can be omitted.
        !          7193: %
        !          7194: \def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]}
        !          7195: \def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]}
        !          7196: \def\ref#1{\xrefX[#1,,,,,,,]}
        !          7197: \def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup
        !          7198:   \unsepspaces
        !          7199:   \def\printedmanual{\ignorespaces #5}%
        !          7200:   \def\printedrefname{\ignorespaces #3}%
        !          7201:   \setbox1=\hbox{\printedmanual\unskip}%
        !          7202:   \setbox0=\hbox{\printedrefname\unskip}%
        !          7203:   \ifdim \wd0 = 0pt
        !          7204:     % No printed node name was explicitly given.
        !          7205:     \expandafter\ifx\csname SETxref-automatic-section-title\endcsname\relax
        !          7206:       % Use the node name inside the square brackets.
        !          7207:       \def\printedrefname{\ignorespaces #1}%
        !          7208:     \else
        !          7209:       % Use the actual chapter/section title appear inside
        !          7210:       % the square brackets.  Use the real section title if we have it.
        !          7211:       \ifdim \wd1 > 0pt
        !          7212:         % It is in another manual, so we don't have it.
        !          7213:         \def\printedrefname{\ignorespaces #1}%
        !          7214:       \else
        !          7215:         \ifhavexrefs
        !          7216:           % We know the real title if we have the xref values.
        !          7217:           \def\printedrefname{\refx{#1-title}{}}%
        !          7218:         \else
        !          7219:           % Otherwise just copy the Info node name.
        !          7220:           \def\printedrefname{\ignorespaces #1}%
        !          7221:         \fi%
        !          7222:       \fi
        !          7223:     \fi
        !          7224:   \fi
        !          7225:   %
        !          7226:   % Make link in pdf output.
        !          7227:   \ifpdf
        !          7228:     {\indexnofonts
        !          7229:      \turnoffactive
        !          7230:      % This expands tokens, so do it after making catcode changes, so _
        !          7231:      % etc. don't get their TeX definitions.
        !          7232:      \getfilename{#4}%
        !          7233:      %
        !          7234:      % See comments at \activebackslashdouble.
        !          7235:      {\activebackslashdouble \xdef\pdfxrefdest{#1}%
        !          7236:       \backslashparens\pdfxrefdest}%
        !          7237:      %
        !          7238:      \leavevmode
        !          7239:      \startlink attr{/Border [0 0 0]}%
        !          7240:      \ifnum\filenamelength>0
        !          7241:        goto file{\the\filename.pdf} name{\pdfxrefdest}%
        !          7242:      \else
        !          7243:        goto name{\pdfmkpgn{\pdfxrefdest}}%
        !          7244:      \fi
        !          7245:     }%
        !          7246:     \setcolor{\linkcolor}%
        !          7247:   \fi
        !          7248:   %
        !          7249:   % Float references are printed completely differently: "Figure 1.2"
        !          7250:   % instead of "[somenode], p.3".  We distinguish them by the
        !          7251:   % LABEL-title being set to a magic string.
        !          7252:   {%
        !          7253:     % Have to otherify everything special to allow the \csname to
        !          7254:     % include an _ in the xref name, etc.
        !          7255:     \indexnofonts
        !          7256:     \turnoffactive
        !          7257:     \expandafter\global\expandafter\let\expandafter\Xthisreftitle
        !          7258:       \csname XR#1-title\endcsname
        !          7259:   }%
        !          7260:   \iffloat\Xthisreftitle
        !          7261:     % If the user specified the print name (third arg) to the ref,
        !          7262:     % print it instead of our usual "Figure 1.2".
        !          7263:     \ifdim\wd0 = 0pt
        !          7264:       \refx{#1-snt}{}%
        !          7265:     \else
        !          7266:       \printedrefname
        !          7267:     \fi
        !          7268:     %
        !          7269:     % if the user also gave the printed manual name (fifth arg), append
        !          7270:     % "in MANUALNAME".
        !          7271:     \ifdim \wd1 > 0pt
        !          7272:       \space \putwordin{} \cite{\printedmanual}%
        !          7273:     \fi
        !          7274:   \else
        !          7275:     % node/anchor (non-float) references.
        !          7276:     %
        !          7277:     % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not
        !          7278:     % insert empty discretionaries after hyphens, which means that it will
        !          7279:     % not find a line break at a hyphen in a node names.  Since some manuals
        !          7280:     % are best written with fairly long node names, containing hyphens, this
        !          7281:     % is a loss.  Therefore, we give the text of the node name again, so it
        !          7282:     % is as if TeX is seeing it for the first time.
        !          7283:     \ifdim \wd1 > 0pt
        !          7284:       \putwordSection{} ``\printedrefname'' \putwordin{} \cite{\printedmanual}%
        !          7285:     \else
        !          7286:       % _ (for example) has to be the character _ for the purposes of the
        !          7287:       % control sequence corresponding to the node, but it has to expand
        !          7288:       % into the usual \leavevmode...\vrule stuff for purposes of
        !          7289:       % printing. So we \turnoffactive for the \refx-snt, back on for the
        !          7290:       % printing, back off for the \refx-pg.
        !          7291:       {\turnoffactive
        !          7292:        % Only output a following space if the -snt ref is nonempty; for
        !          7293:        % @unnumbered and @anchor, it won't be.
        !          7294:        \setbox2 = \hbox{\ignorespaces \refx{#1-snt}{}}%
        !          7295:        \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi
        !          7296:       }%
        !          7297:       % output the `[mynode]' via a macro so it can be overridden.
        !          7298:       \xrefprintnodename\printedrefname
        !          7299:       %
        !          7300:       % But we always want a comma and a space:
        !          7301:       ,\space
        !          7302:       %
        !          7303:       % output the `page 3'.
        !          7304:       \turnoffactive \putwordpage\tie\refx{#1-pg}{}%
        !          7305:     \fi
        !          7306:   \fi
        !          7307:   \endlink
        !          7308: \endgroup}
        !          7309: 
        !          7310: % This macro is called from \xrefX for the `[nodename]' part of xref
        !          7311: % output.  It's a separate macro only so it can be changed more easily,
        !          7312: % since square brackets don't work well in some documents.  Particularly
        !          7313: % one that Bob is working on :).
        !          7314: %
        !          7315: \def\xrefprintnodename#1{[#1]}
        !          7316: 
        !          7317: % Things referred to by \setref.
        !          7318: %
        !          7319: \def\Ynothing{}
        !          7320: \def\Yomitfromtoc{}
        !          7321: \def\Ynumbered{%
        !          7322:   \ifnum\secno=0
        !          7323:     \putwordChapter@tie \the\chapno
        !          7324:   \else \ifnum\subsecno=0
        !          7325:     \putwordSection@tie \the\chapno.\the\secno
        !          7326:   \else \ifnum\subsubsecno=0
        !          7327:     \putwordSection@tie \the\chapno.\the\secno.\the\subsecno
        !          7328:   \else
        !          7329:     \putwordSection@tie \the\chapno.\the\secno.\the\subsecno.\the\subsubsecno
        !          7330:   \fi\fi\fi
        !          7331: }
        !          7332: \def\Yappendix{%
        !          7333:   \ifnum\secno=0
        !          7334:      \putwordAppendix@tie @char\the\appendixno{}%
        !          7335:   \else \ifnum\subsecno=0
        !          7336:      \putwordSection@tie @char\the\appendixno.\the\secno
        !          7337:   \else \ifnum\subsubsecno=0
        !          7338:     \putwordSection@tie @char\the\appendixno.\the\secno.\the\subsecno
        !          7339:   \else
        !          7340:     \putwordSection@tie
        !          7341:       @char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno
        !          7342:   \fi\fi\fi
        !          7343: }
        !          7344: 
        !          7345: % Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
        !          7346: % If its value is nonempty, SUFFIX is output afterward.
        !          7347: %
        !          7348: \def\refx#1#2{%
        !          7349:   {%
        !          7350:     \indexnofonts
        !          7351:     \otherbackslash
        !          7352:     \expandafter\global\expandafter\let\expandafter\thisrefX
        !          7353:       \csname XR#1\endcsname
        !          7354:   }%
        !          7355:   \ifx\thisrefX\relax
        !          7356:     % If not defined, say something at least.
        !          7357:     \angleleft un\-de\-fined\angleright
        !          7358:     \iflinks
        !          7359:       \ifhavexrefs
        !          7360:         \message{\linenumber Undefined cross reference `#1'.}%
        !          7361:       \else
        !          7362:         \ifwarnedxrefs\else
        !          7363:           \global\warnedxrefstrue
        !          7364:           \message{Cross reference values unknown; you must run TeX again.}%
        !          7365:         \fi
        !          7366:       \fi
        !          7367:     \fi
        !          7368:   \else
        !          7369:     % It's defined, so just use it.
        !          7370:     \thisrefX
        !          7371:   \fi
        !          7372:   #2% Output the suffix in any case.
        !          7373: }
        !          7374: 
        !          7375: % This is the macro invoked by entries in the aux file.  Usually it's
        !          7376: % just a \def (we prepend XR to the control sequence name to avoid
        !          7377: % collisions).  But if this is a float type, we have more work to do.
        !          7378: %
        !          7379: \def\xrdef#1#2{%
        !          7380:   {% The node name might contain 8-bit characters, which in our current
        !          7381:    % implementation are changed to commands like @'e.  Don't let these
        !          7382:    % mess up the control sequence name.
        !          7383:     \indexnofonts
        !          7384:     \turnoffactive
        !          7385:     \xdef\safexrefname{#1}%
        !          7386:   }%
        !          7387:   %
        !          7388:   \expandafter\gdef\csname XR\safexrefname\endcsname{#2}% remember this xref
        !          7389:   %
        !          7390:   % Was that xref control sequence that we just defined for a float?
        !          7391:   \expandafter\iffloat\csname XR\safexrefname\endcsname
        !          7392:     % it was a float, and we have the (safe) float type in \iffloattype.
        !          7393:     \expandafter\let\expandafter\floatlist
        !          7394:       \csname floatlist\iffloattype\endcsname
        !          7395:     %
        !          7396:     % Is this the first time we've seen this float type?
        !          7397:     \expandafter\ifx\floatlist\relax
        !          7398:       \toks0 = {\do}% yes, so just \do
        !          7399:     \else
        !          7400:       % had it before, so preserve previous elements in list.
        !          7401:       \toks0 = \expandafter{\floatlist\do}%
        !          7402:     \fi
        !          7403:     %
        !          7404:     % Remember this xref in the control sequence \floatlistFLOATTYPE,
        !          7405:     % for later use in \listoffloats.
        !          7406:     \expandafter\xdef\csname floatlist\iffloattype\endcsname{\the\toks0
        !          7407:       {\safexrefname}}%
        !          7408:   \fi
        !          7409: }
        !          7410: 
        !          7411: % Read the last existing aux file, if any.  No error if none exists.
        !          7412: %
        !          7413: \def\tryauxfile{%
        !          7414:   \openin 1 \jobname.aux
        !          7415:   \ifeof 1 \else
        !          7416:     \readdatafile{aux}%
        !          7417:     \global\havexrefstrue
        !          7418:   \fi
        !          7419:   \closein 1
        !          7420: }
        !          7421: 
        !          7422: \def\setupdatafile{%
        !          7423:   \catcode`\^^@=\other
        !          7424:   \catcode`\^^A=\other
        !          7425:   \catcode`\^^B=\other
        !          7426:   \catcode`\^^C=\other
        !          7427:   \catcode`\^^D=\other
        !          7428:   \catcode`\^^E=\other
        !          7429:   \catcode`\^^F=\other
        !          7430:   \catcode`\^^G=\other
        !          7431:   \catcode`\^^H=\other
        !          7432:   \catcode`\^^K=\other
        !          7433:   \catcode`\^^L=\other
        !          7434:   \catcode`\^^N=\other
        !          7435:   \catcode`\^^P=\other
        !          7436:   \catcode`\^^Q=\other
        !          7437:   \catcode`\^^R=\other
        !          7438:   \catcode`\^^S=\other
        !          7439:   \catcode`\^^T=\other
        !          7440:   \catcode`\^^U=\other
        !          7441:   \catcode`\^^V=\other
        !          7442:   \catcode`\^^W=\other
        !          7443:   \catcode`\^^X=\other
        !          7444:   \catcode`\^^Z=\other
        !          7445:   \catcode`\^^[=\other
        !          7446:   \catcode`\^^\=\other
        !          7447:   \catcode`\^^]=\other
        !          7448:   \catcode`\^^^=\other
        !          7449:   \catcode`\^^_=\other
        !          7450:   % It was suggested to set the catcode of ^ to 7, which would allow ^^e4 etc.
        !          7451:   % in xref tags, i.e., node names.  But since ^^e4 notation isn't
        !          7452:   % supported in the main text, it doesn't seem desirable.  Furthermore,
        !          7453:   % that is not enough: for node names that actually contain a ^
        !          7454:   % character, we would end up writing a line like this: 'xrdef {'hat
        !          7455:   % b-title}{'hat b} and \xrdef does a \csname...\endcsname on the first
        !          7456:   % argument, and \hat is not an expandable control sequence.  It could
        !          7457:   % all be worked out, but why?  Either we support ^^ or we don't.
        !          7458:   %
        !          7459:   % The other change necessary for this was to define \auxhat:
        !          7460:   % \def\auxhat{\def^{'hat }}% extra space so ok if followed by letter
        !          7461:   % and then to call \auxhat in \setq.
        !          7462:   %
        !          7463:   \catcode`\^=\other
        !          7464:   %
        !          7465:   % Special characters.  Should be turned off anyway, but...
        !          7466:   \catcode`\~=\other
        !          7467:   \catcode`\[=\other
        !          7468:   \catcode`\]=\other
        !          7469:   \catcode`\"=\other
        !          7470:   \catcode`\_=\other
        !          7471:   \catcode`\|=\other
        !          7472:   \catcode`\<=\other
        !          7473:   \catcode`\>=\other
        !          7474:   \catcode`\$=\other
        !          7475:   \catcode`\#=\other
        !          7476:   \catcode`\&=\other
        !          7477:   \catcode`\%=\other
        !          7478:   \catcode`+=\other % avoid \+ for paranoia even though we've turned it off
        !          7479:   %
        !          7480:   % This is to support \ in node names and titles, since the \
        !          7481:   % characters end up in a \csname.  It's easier than
        !          7482:   % leaving it active and making its active definition an actual \
        !          7483:   % character.  What I don't understand is why it works in the *value*
        !          7484:   % of the xrdef.  Seems like it should be a catcode12 \, and that
        !          7485:   % should not typeset properly.  But it works, so I'm moving on for
        !          7486:   % now.  --karl, 15jan04.
        !          7487:   \catcode`\\=\other
        !          7488:   %
        !          7489:   % Make the characters 128-255 be printing characters.
        !          7490:   {%
        !          7491:     \count1=128
        !          7492:     \def\loop{%
        !          7493:       \catcode\count1=\other
        !          7494:       \advance\count1 by 1
        !          7495:       \ifnum \count1<256 \loop \fi
        !          7496:     }%
        !          7497:   }%
        !          7498:   %
        !          7499:   % @ is our escape character in .aux files, and we need braces.
        !          7500:   \catcode`\{=1
        !          7501:   \catcode`\}=2
        !          7502:   \catcode`\@=0
        !          7503: }
        !          7504: 
        !          7505: \def\readdatafile#1{%
        !          7506: \begingroup
        !          7507:   \setupdatafile
        !          7508:   \input\jobname.#1
        !          7509: \endgroup}
        !          7510: 
        !          7511: 
        !          7512: \message{insertions,}
        !          7513: % including footnotes.
        !          7514: 
        !          7515: \newcount \footnoteno
        !          7516: 
        !          7517: % The trailing space in the following definition for supereject is
        !          7518: % vital for proper filling; pages come out unaligned when you do a
        !          7519: % pagealignmacro call if that space before the closing brace is
        !          7520: % removed. (Generally, numeric constants should always be followed by a
        !          7521: % space to prevent strange expansion errors.)
        !          7522: \def\supereject{\par\penalty -20000\footnoteno =0 }
        !          7523: 
        !          7524: % @footnotestyle is meaningful for info output only.
        !          7525: \let\footnotestyle=\comment
        !          7526: 
        !          7527: {\catcode `\@=11
        !          7528: %
        !          7529: % Auto-number footnotes.  Otherwise like plain.
        !          7530: \gdef\footnote{%
        !          7531:   \let\indent=\ptexindent
        !          7532:   \let\noindent=\ptexnoindent
        !          7533:   \global\advance\footnoteno by \@ne
        !          7534:   \edef\thisfootno{$^{\the\footnoteno}$}%
        !          7535:   %
        !          7536:   % In case the footnote comes at the end of a sentence, preserve the
        !          7537:   % extra spacing after we do the footnote number.
        !          7538:   \let\@sf\empty
        !          7539:   \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\ptexslash\fi
        !          7540:   %
        !          7541:   % Remove inadvertent blank space before typesetting the footnote number.
        !          7542:   \unskip
        !          7543:   \thisfootno\@sf
        !          7544:   \dofootnote
        !          7545: }%
        !          7546: 
        !          7547: % Don't bother with the trickery in plain.tex to not require the
        !          7548: % footnote text as a parameter.  Our footnotes don't need to be so general.
        !          7549: %
        !          7550: % Oh yes, they do; otherwise, @ifset (and anything else that uses
        !          7551: % \parseargline) fails inside footnotes because the tokens are fixed when
        !          7552: % the footnote is read.  --karl, 16nov96.
        !          7553: %
        !          7554: \gdef\dofootnote{%
        !          7555:   \insert\footins\bgroup
        !          7556:   % We want to typeset this text as a normal paragraph, even if the
        !          7557:   % footnote reference occurs in (for example) a display environment.
        !          7558:   % So reset some parameters.
        !          7559:   \hsize=\pagewidth
        !          7560:   \interlinepenalty\interfootnotelinepenalty
        !          7561:   \splittopskip\ht\strutbox % top baseline for broken footnotes
        !          7562:   \splitmaxdepth\dp\strutbox
        !          7563:   \floatingpenalty\@MM
        !          7564:   \leftskip\z@skip
        !          7565:   \rightskip\z@skip
        !          7566:   \spaceskip\z@skip
        !          7567:   \xspaceskip\z@skip
        !          7568:   \parindent\defaultparindent
        !          7569:   %
        !          7570:   \smallfonts \rm
        !          7571:   %
        !          7572:   % Because we use hanging indentation in footnotes, a @noindent appears
        !          7573:   % to exdent this text, so make it be a no-op.  makeinfo does not use
        !          7574:   % hanging indentation so @noindent can still be needed within footnote
        !          7575:   % text after an @example or the like (not that this is good style).
        !          7576:   \let\noindent = \relax
        !          7577:   %
        !          7578:   % Hang the footnote text off the number.  Use \everypar in case the
        !          7579:   % footnote extends for more than one paragraph.
        !          7580:   \everypar = {\hang}%
        !          7581:   \textindent{\thisfootno}%
        !          7582:   %
        !          7583:   % Don't crash into the line above the footnote text.  Since this
        !          7584:   % expands into a box, it must come within the paragraph, lest it
        !          7585:   % provide a place where TeX can split the footnote.
        !          7586:   \footstrut
        !          7587:   \futurelet\next\fo@t
        !          7588: }
        !          7589: }%end \catcode `\@=11
        !          7590: 
        !          7591: % In case a @footnote appears in a vbox, save the footnote text and create
        !          7592: % the real \insert just after the vbox finished.  Otherwise, the insertion
        !          7593: % would be lost.
        !          7594: % Similarly, if a @footnote appears inside an alignment, save the footnote
        !          7595: % text to a box and make the \insert when a row of the table is finished.
        !          7596: % And the same can be done for other insert classes.  --kasal, 16nov03.
        !          7597: 
        !          7598: % Replace the \insert primitive by a cheating macro.
        !          7599: % Deeper inside, just make sure that the saved insertions are not spilled
        !          7600: % out prematurely.
        !          7601: %
        !          7602: \def\startsavinginserts{%
        !          7603:   \ifx \insert\ptexinsert
        !          7604:     \let\insert\saveinsert
        !          7605:   \else
        !          7606:     \let\checkinserts\relax
        !          7607:   \fi
        !          7608: }
        !          7609: 
        !          7610: % This \insert replacement works for both \insert\footins{foo} and
        !          7611: % \insert\footins\bgroup foo\egroup, but it doesn't work for \insert27{foo}.
        !          7612: %
        !          7613: \def\saveinsert#1{%
        !          7614:   \edef\next{\noexpand\savetobox \makeSAVEname#1}%
        !          7615:   \afterassignment\next
        !          7616:   % swallow the left brace
        !          7617:   \let\temp =
        !          7618: }
        !          7619: \def\makeSAVEname#1{\makecsname{SAVE\expandafter\gobble\string#1}}
        !          7620: \def\savetobox#1{\global\setbox#1 = \vbox\bgroup \unvbox#1}
        !          7621: 
        !          7622: \def\checksaveins#1{\ifvoid#1\else \placesaveins#1\fi}
        !          7623: 
        !          7624: \def\placesaveins#1{%
        !          7625:   \ptexinsert \csname\expandafter\gobblesave\string#1\endcsname
        !          7626:     {\box#1}%
        !          7627: }
        !          7628: 
        !          7629: % eat @SAVE -- beware, all of them have catcode \other:
        !          7630: {
        !          7631:   \def\dospecials{\do S\do A\do V\do E} \uncatcodespecials  %  ;-)
        !          7632:   \gdef\gobblesave @SAVE{}
        !          7633: }
        !          7634: 
        !          7635: % initialization:
        !          7636: \def\newsaveins #1{%
        !          7637:   \edef\next{\noexpand\newsaveinsX \makeSAVEname#1}%
        !          7638:   \next
        !          7639: }
        !          7640: \def\newsaveinsX #1{%
        !          7641:   \csname newbox\endcsname #1%
        !          7642:   \expandafter\def\expandafter\checkinserts\expandafter{\checkinserts
        !          7643:     \checksaveins #1}%
        !          7644: }
        !          7645: 
        !          7646: % initialize:
        !          7647: \let\checkinserts\empty
        !          7648: \newsaveins\footins
        !          7649: \newsaveins\margin
        !          7650: 
        !          7651: 
        !          7652: % @image.  We use the macros from epsf.tex to support this.
        !          7653: % If epsf.tex is not installed and @image is used, we complain.
        !          7654: %
        !          7655: % Check for and read epsf.tex up front.  If we read it only at @image
        !          7656: % time, we might be inside a group, and then its definitions would get
        !          7657: % undone and the next image would fail.
        !          7658: \openin 1 = epsf.tex
        !          7659: \ifeof 1 \else
        !          7660:   % Do not bother showing banner with epsf.tex v2.7k (available in
        !          7661:   % doc/epsf.tex and on ctan).
        !          7662:   \def\epsfannounce{\toks0 = }%
        !          7663:   \input epsf.tex
        !          7664: \fi
        !          7665: \closein 1
        !          7666: %
        !          7667: % We will only complain once about lack of epsf.tex.
        !          7668: \newif\ifwarnednoepsf
        !          7669: \newhelp\noepsfhelp{epsf.tex must be installed for images to
        !          7670:   work.  It is also included in the Texinfo distribution, or you can get
        !          7671:   it from ftp://tug.org/tex/epsf.tex.}
        !          7672: %
        !          7673: \def\image#1{%
        !          7674:   \ifx\epsfbox\undefined
        !          7675:     \ifwarnednoepsf \else
        !          7676:       \errhelp = \noepsfhelp
        !          7677:       \errmessage{epsf.tex not found, images will be ignored}%
        !          7678:       \global\warnednoepsftrue
        !          7679:     \fi
        !          7680:   \else
        !          7681:     \imagexxx #1,,,,,\finish
        !          7682:   \fi
        !          7683: }
        !          7684: %
        !          7685: % Arguments to @image:
        !          7686: % #1 is (mandatory) image filename; we tack on .eps extension.
        !          7687: % #2 is (optional) width, #3 is (optional) height.
        !          7688: % #4 is (ignored optional) html alt text.
        !          7689: % #5 is (ignored optional) extension.
        !          7690: % #6 is just the usual extra ignored arg for parsing this stuff.
        !          7691: \newif\ifimagevmode
        !          7692: \def\imagexxx#1,#2,#3,#4,#5,#6\finish{\begingroup
        !          7693:   \catcode`\^^M = 5     % in case we're inside an example
        !          7694:   \normalturnoffactive  % allow _ et al. in names
        !          7695:   % If the image is by itself, center it.
        !          7696:   \ifvmode
        !          7697:     \imagevmodetrue
        !          7698:     \nobreak\medskip
        !          7699:     % Usually we'll have text after the image which will insert
        !          7700:     % \parskip glue, so insert it here too to equalize the space
        !          7701:     % above and below.
        !          7702:     \nobreak\vskip\parskip
        !          7703:     \nobreak
        !          7704:   \fi
        !          7705:   %
        !          7706:   % Leave vertical mode so that indentation from an enclosing
        !          7707:   % environment such as @quotation is respected.  On the other hand, if
        !          7708:   % it's at the top level, we don't want the normal paragraph indentation.
        !          7709:   \noindent
        !          7710:   %
        !          7711:   % Output the image.
        !          7712:   \ifpdf
        !          7713:     \dopdfimage{#1}{#2}{#3}%
        !          7714:   \else
        !          7715:     % \epsfbox itself resets \epsf?size at each figure.
        !          7716:     \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \epsfxsize=#2\relax \fi
        !          7717:     \setbox0 = \hbox{\ignorespaces #3}\ifdim\wd0 > 0pt \epsfysize=#3\relax \fi
        !          7718:     \epsfbox{#1.eps}%
        !          7719:   \fi
        !          7720:   %
        !          7721:   \ifimagevmode \medskip \fi  % space after the standalone image
        !          7722: \endgroup}
        !          7723: 
        !          7724: 
        !          7725: % @float FLOATTYPE,LABEL,LOC ... @end float for displayed figures, tables,
        !          7726: % etc.  We don't actually implement floating yet, we always include the
        !          7727: % float "here".  But it seemed the best name for the future.
        !          7728: %
        !          7729: \envparseargdef\float{\eatcommaspace\eatcommaspace\dofloat#1, , ,\finish}
        !          7730: 
        !          7731: % There may be a space before second and/or third parameter; delete it.
        !          7732: \def\eatcommaspace#1, {#1,}
        !          7733: 
        !          7734: % #1 is the optional FLOATTYPE, the text label for this float, typically
        !          7735: % "Figure", "Table", "Example", etc.  Can't contain commas.  If omitted,
        !          7736: % this float will not be numbered and cannot be referred to.
        !          7737: %
        !          7738: % #2 is the optional xref label.  Also must be present for the float to
        !          7739: % be referable.
        !          7740: %
        !          7741: % #3 is the optional positioning argument; for now, it is ignored.  It
        !          7742: % will somehow specify the positions allowed to float to (here, top, bottom).
        !          7743: %
        !          7744: % We keep a separate counter for each FLOATTYPE, which we reset at each
        !          7745: % chapter-level command.
        !          7746: \let\resetallfloatnos=\empty
        !          7747: %
        !          7748: \def\dofloat#1,#2,#3,#4\finish{%
        !          7749:   \let\thiscaption=\empty
        !          7750:   \let\thisshortcaption=\empty
        !          7751:   %
        !          7752:   % don't lose footnotes inside @float.
        !          7753:   %
        !          7754:   % BEWARE: when the floats start float, we have to issue warning whenever an
        !          7755:   % insert appears inside a float which could possibly float. --kasal, 26may04
        !          7756:   %
        !          7757:   \startsavinginserts
        !          7758:   %
        !          7759:   % We can't be used inside a paragraph.
        !          7760:   \par
        !          7761:   %
        !          7762:   \vtop\bgroup
        !          7763:     \def\floattype{#1}%
        !          7764:     \def\floatlabel{#2}%
        !          7765:     \def\floatloc{#3}% we do nothing with this yet.
        !          7766:     %
        !          7767:     \ifx\floattype\empty
        !          7768:       \let\safefloattype=\empty
        !          7769:     \else
        !          7770:       {%
        !          7771:         % the floattype might have accents or other special characters,
        !          7772:         % but we need to use it in a control sequence name.
        !          7773:         \indexnofonts
        !          7774:         \turnoffactive
        !          7775:         \xdef\safefloattype{\floattype}%
        !          7776:       }%
        !          7777:     \fi
        !          7778:     %
        !          7779:     % If label is given but no type, we handle that as the empty type.
        !          7780:     \ifx\floatlabel\empty \else
        !          7781:       % We want each FLOATTYPE to be numbered separately (Figure 1,
        !          7782:       % Table 1, Figure 2, ...).  (And if no label, no number.)
        !          7783:       %
        !          7784:       \expandafter\getfloatno\csname\safefloattype floatno\endcsname
        !          7785:       \global\advance\floatno by 1
        !          7786:       %
        !          7787:       {%
        !          7788:         % This magic value for \lastsection is output by \setref as the
        !          7789:         % XREFLABEL-title value.  \xrefX uses it to distinguish float
        !          7790:         % labels (which have a completely different output format) from
        !          7791:         % node and anchor labels.  And \xrdef uses it to construct the
        !          7792:         % lists of floats.
        !          7793:         %
        !          7794:         \edef\lastsection{\floatmagic=\safefloattype}%
        !          7795:         \setref{\floatlabel}{Yfloat}%
        !          7796:       }%
        !          7797:     \fi
        !          7798:     %
        !          7799:     % start with \parskip glue, I guess.
        !          7800:     \vskip\parskip
        !          7801:     %
        !          7802:     % Don't suppress indentation if a float happens to start a section.
        !          7803:     \restorefirstparagraphindent
        !          7804: }
        !          7805: 
        !          7806: % we have these possibilities:
        !          7807: % @float Foo,lbl & @caption{Cap}: Foo 1.1: Cap
        !          7808: % @float Foo,lbl & no caption:    Foo 1.1
        !          7809: % @float Foo & @caption{Cap}:     Foo: Cap
        !          7810: % @float Foo & no caption:        Foo
        !          7811: % @float ,lbl & Caption{Cap}:     1.1: Cap
        !          7812: % @float ,lbl & no caption:       1.1
        !          7813: % @float & @caption{Cap}:         Cap
        !          7814: % @float & no caption:
        !          7815: %
        !          7816: \def\Efloat{%
        !          7817:     \let\floatident = \empty
        !          7818:     %
        !          7819:     % In all cases, if we have a float type, it comes first.
        !          7820:     \ifx\floattype\empty \else \def\floatident{\floattype}\fi
        !          7821:     %
        !          7822:     % If we have an xref label, the number comes next.
        !          7823:     \ifx\floatlabel\empty \else
        !          7824:       \ifx\floattype\empty \else % if also had float type, need tie first.
        !          7825:         \appendtomacro\floatident{\tie}%
        !          7826:       \fi
        !          7827:       % the number.
        !          7828:       \appendtomacro\floatident{\chaplevelprefix\the\floatno}%
        !          7829:     \fi
        !          7830:     %
        !          7831:     % Start the printed caption with what we've constructed in
        !          7832:     % \floatident, but keep it separate; we need \floatident again.
        !          7833:     \let\captionline = \floatident
        !          7834:     %
        !          7835:     \ifx\thiscaption\empty \else
        !          7836:       \ifx\floatident\empty \else
        !          7837:        \appendtomacro\captionline{: }% had ident, so need a colon between
        !          7838:       \fi
        !          7839:       %
        !          7840:       % caption text.
        !          7841:       \appendtomacro\captionline{\scanexp\thiscaption}%
        !          7842:     \fi
        !          7843:     %
        !          7844:     % If we have anything to print, print it, with space before.
        !          7845:     % Eventually this needs to become an \insert.
        !          7846:     \ifx\captionline\empty \else
        !          7847:       \vskip.5\parskip
        !          7848:       \captionline
        !          7849:       %
        !          7850:       % Space below caption.
        !          7851:       \vskip\parskip
        !          7852:     \fi
        !          7853:     %
        !          7854:     % If have an xref label, write the list of floats info.  Do this
        !          7855:     % after the caption, to avoid chance of it being a breakpoint.
        !          7856:     \ifx\floatlabel\empty \else
        !          7857:       % Write the text that goes in the lof to the aux file as
        !          7858:       % \floatlabel-lof.  Besides \floatident, we include the short
        !          7859:       % caption if specified, else the full caption if specified, else nothing.
        !          7860:       {%
        !          7861:         \atdummies
        !          7862:         %
        !          7863:         % since we read the caption text in the macro world, where ^^M
        !          7864:         % is turned into a normal character, we have to scan it back, so
        !          7865:         % we don't write the literal three characters "^^M" into the aux file.
        !          7866:        \scanexp{%
        !          7867:          \xdef\noexpand\gtemp{%
        !          7868:            \ifx\thisshortcaption\empty
        !          7869:              \thiscaption
        !          7870:            \else
        !          7871:              \thisshortcaption
        !          7872:            \fi
        !          7873:          }%
        !          7874:        }%
        !          7875:         \immediate\write\auxfile{@xrdef{\floatlabel-lof}{\floatident
        !          7876:          \ifx\gtemp\empty \else : \gtemp \fi}}%
        !          7877:       }%
        !          7878:     \fi
        !          7879:   \egroup  % end of \vtop
        !          7880:   %
        !          7881:   % place the captured inserts
        !          7882:   %
        !          7883:   % BEWARE: when the floats start floating, we have to issue warning
        !          7884:   % whenever an insert appears inside a float which could possibly
        !          7885:   % float. --kasal, 26may04
        !          7886:   %
        !          7887:   \checkinserts
        !          7888: }
        !          7889: 
        !          7890: % Append the tokens #2 to the definition of macro #1, not expanding either.
        !          7891: %
        !          7892: \def\appendtomacro#1#2{%
        !          7893:   \expandafter\def\expandafter#1\expandafter{#1#2}%
        !          7894: }
        !          7895: 
        !          7896: % @caption, @shortcaption
        !          7897: %
        !          7898: \def\caption{\docaption\thiscaption}
        !          7899: \def\shortcaption{\docaption\thisshortcaption}
        !          7900: \def\docaption{\checkenv\float \bgroup\scanargctxt\defcaption}
        !          7901: \def\defcaption#1#2{\egroup \def#1{#2}}
        !          7902: 
        !          7903: % The parameter is the control sequence identifying the counter we are
        !          7904: % going to use.  Create it if it doesn't exist and assign it to \floatno.
        !          7905: \def\getfloatno#1{%
        !          7906:   \ifx#1\relax
        !          7907:       % Haven't seen this figure type before.
        !          7908:       \csname newcount\endcsname #1%
        !          7909:       %
        !          7910:       % Remember to reset this floatno at the next chap.
        !          7911:       \expandafter\gdef\expandafter\resetallfloatnos
        !          7912:         \expandafter{\resetallfloatnos #1=0 }%
        !          7913:   \fi
        !          7914:   \let\floatno#1%
        !          7915: }
        !          7916: 
        !          7917: % \setref calls this to get the XREFLABEL-snt value.  We want an @xref
        !          7918: % to the FLOATLABEL to expand to "Figure 3.1".  We call \setref when we
        !          7919: % first read the @float command.
        !          7920: %
        !          7921: \def\Yfloat{\floattype@tie \chaplevelprefix\the\floatno}%
        !          7922: 
        !          7923: % Magic string used for the XREFLABEL-title value, so \xrefX can
        !          7924: % distinguish floats from other xref types.
        !          7925: \def\floatmagic{!!float!!}
        !          7926: 
        !          7927: % #1 is the control sequence we are passed; we expand into a conditional
        !          7928: % which is true if #1 represents a float ref.  That is, the magic
        !          7929: % \lastsection value which we \setref above.
        !          7930: %
        !          7931: \def\iffloat#1{\expandafter\doiffloat#1==\finish}
        !          7932: %
        !          7933: % #1 is (maybe) the \floatmagic string.  If so, #2 will be the
        !          7934: % (safe) float type for this float.  We set \iffloattype to #2.
        !          7935: %
        !          7936: \def\doiffloat#1=#2=#3\finish{%
        !          7937:   \def\temp{#1}%
        !          7938:   \def\iffloattype{#2}%
        !          7939:   \ifx\temp\floatmagic
        !          7940: }
        !          7941: 
        !          7942: % @listoffloats FLOATTYPE - print a list of floats like a table of contents.
        !          7943: %
        !          7944: \parseargdef\listoffloats{%
        !          7945:   \def\floattype{#1}% floattype
        !          7946:   {%
        !          7947:     % the floattype might have accents or other special characters,
        !          7948:     % but we need to use it in a control sequence name.
        !          7949:     \indexnofonts
        !          7950:     \turnoffactive
        !          7951:     \xdef\safefloattype{\floattype}%
        !          7952:   }%
        !          7953:   %
        !          7954:   % \xrdef saves the floats as a \do-list in \floatlistSAFEFLOATTYPE.
        !          7955:   \expandafter\ifx\csname floatlist\safefloattype\endcsname \relax
        !          7956:     \ifhavexrefs
        !          7957:       % if the user said @listoffloats foo but never @float foo.
        !          7958:       \message{\linenumber No `\safefloattype' floats to list.}%
        !          7959:     \fi
        !          7960:   \else
        !          7961:     \begingroup
        !          7962:       \leftskip=\tocindent  % indent these entries like a toc
        !          7963:       \let\do=\listoffloatsdo
        !          7964:       \csname floatlist\safefloattype\endcsname
        !          7965:     \endgroup
        !          7966:   \fi
        !          7967: }
        !          7968: 
        !          7969: % This is called on each entry in a list of floats.  We're passed the
        !          7970: % xref label, in the form LABEL-title, which is how we save it in the
        !          7971: % aux file.  We strip off the -title and look up \XRLABEL-lof, which
        !          7972: % has the text we're supposed to typeset here.
        !          7973: %
        !          7974: % Figures without xref labels will not be included in the list (since
        !          7975: % they won't appear in the aux file).
        !          7976: %
        !          7977: \def\listoffloatsdo#1{\listoffloatsdoentry#1\finish}
        !          7978: \def\listoffloatsdoentry#1-title\finish{{%
        !          7979:   % Can't fully expand XR#1-lof because it can contain anything.  Just
        !          7980:   % pass the control sequence.  On the other hand, XR#1-pg is just the
        !          7981:   % page number, and we want to fully expand that so we can get a link
        !          7982:   % in pdf output.
        !          7983:   \toksA = \expandafter{\csname XR#1-lof\endcsname}%
        !          7984:   %
        !          7985:   % use the same \entry macro we use to generate the TOC and index.
        !          7986:   \edef\writeentry{\noexpand\entry{\the\toksA}{\csname XR#1-pg\endcsname}}%
        !          7987:   \writeentry
        !          7988: }}
        !          7989: 
        !          7990: 
        !          7991: \message{localization,}
        !          7992: 
        !          7993: % For single-language documents, @documentlanguage is usually given very
        !          7994: % early, just after @documentencoding.  Single argument is the language
        !          7995: % (de) or locale (de_DE) abbreviation.
        !          7996: %
        !          7997: {
        !          7998:   \catcode`\_ = \active
        !          7999:   \globaldefs=1
        !          8000: \parseargdef\documentlanguage{\begingroup
        !          8001:   \let_=\normalunderscore  % normal _ character for filenames
        !          8002:   \tex % read txi-??.tex file in plain TeX.
        !          8003:     % Read the file by the name they passed if it exists.
        !          8004:     \openin 1 txi-#1.tex
        !          8005:     \ifeof 1
        !          8006:       \documentlanguagetrywithoutunderscore{#1_\finish}%
        !          8007:     \else
        !          8008:       \globaldefs = 1  % everything in the txi-LL files needs to persist
        !          8009:       \input txi-#1.tex
        !          8010:     \fi
        !          8011:     \closein 1
        !          8012:   \endgroup % end raw TeX
        !          8013: \endgroup}
        !          8014: %
        !          8015: % If they passed de_DE, and txi-de_DE.tex doesn't exist,
        !          8016: % try txi-de.tex.
        !          8017: %
        !          8018: \gdef\documentlanguagetrywithoutunderscore#1_#2\finish{%
        !          8019:   \openin 1 txi-#1.tex
        !          8020:   \ifeof 1
        !          8021:     \errhelp = \nolanghelp
        !          8022:     \errmessage{Cannot read language file txi-#1.tex}%
        !          8023:   \else
        !          8024:     \globaldefs = 1  % everything in the txi-LL files needs to persist
        !          8025:     \input txi-#1.tex
        !          8026:   \fi
        !          8027:   \closein 1
        !          8028: }
        !          8029: }% end of special _ catcode
        !          8030: %
        !          8031: \newhelp\nolanghelp{The given language definition file cannot be found or
        !          8032: is empty.  Maybe you need to install it?  Putting it in the current
        !          8033: directory should work if nowhere else does.}
        !          8034: 
        !          8035: % This macro is called from txi-??.tex files; the first argument is the
        !          8036: % \language name to set (without the "\lang@" prefix), the second and
        !          8037: % third args are \{left,right}hyphenmin.
        !          8038: %
        !          8039: % The language names to pass are determined when the format is built.
        !          8040: % See the etex.log file created at that time, e.g.,
        !          8041: % /usr/local/texlive/2008/texmf-var/web2c/pdftex/etex.log.
        !          8042: %
        !          8043: % With TeX Live 2008, etex now includes hyphenation patterns for all
        !          8044: % available languages.  This means we can support hyphenation in
        !          8045: % Texinfo, at least to some extent.  (This still doesn't solve the
        !          8046: % accented characters problem.)
        !          8047: %
        !          8048: \catcode`@=11
        !          8049: \def\txisetlanguage#1#2#3{%
        !          8050:   % do not set the language if the name is undefined in the current TeX.
        !          8051:   \expandafter\ifx\csname lang@#1\endcsname \relax
        !          8052:     \message{no patterns for #1}%
        !          8053:   \else
        !          8054:     \global\language = \csname lang@#1\endcsname
        !          8055:   \fi
        !          8056:   % but there is no harm in adjusting the hyphenmin values regardless.
        !          8057:   \global\lefthyphenmin = #2\relax
        !          8058:   \global\righthyphenmin = #3\relax
        !          8059: }
        !          8060: 
        !          8061: % Helpers for encodings.
        !          8062: % Set the catcode of characters 128 through 255 to the specified number.
        !          8063: %
        !          8064: \def\setnonasciicharscatcode#1{%
        !          8065:    \count255=128
        !          8066:    \loop\ifnum\count255<256
        !          8067:       \global\catcode\count255=#1\relax
        !          8068:       \advance\count255 by 1
        !          8069:    \repeat
        !          8070: }
        !          8071: 
        !          8072: \def\setnonasciicharscatcodenonglobal#1{%
        !          8073:    \count255=128
        !          8074:    \loop\ifnum\count255<256
        !          8075:       \catcode\count255=#1\relax
        !          8076:       \advance\count255 by 1
        !          8077:    \repeat
        !          8078: }
        !          8079: 
        !          8080: % @documentencoding sets the definition of non-ASCII characters
        !          8081: % according to the specified encoding.
        !          8082: %
        !          8083: \parseargdef\documentencoding{%
        !          8084:   % Encoding being declared for the document.
        !          8085:   \def\declaredencoding{\csname #1.enc\endcsname}%
        !          8086:   %
        !          8087:   % Supported encodings: names converted to tokens in order to be able
        !          8088:   % to compare them with \ifx.
        !          8089:   \def\ascii{\csname US-ASCII.enc\endcsname}%
        !          8090:   \def\latnine{\csname ISO-8859-15.enc\endcsname}%
        !          8091:   \def\latone{\csname ISO-8859-1.enc\endcsname}%
        !          8092:   \def\lattwo{\csname ISO-8859-2.enc\endcsname}%
        !          8093:   \def\utfeight{\csname UTF-8.enc\endcsname}%
        !          8094:   %
        !          8095:   \ifx \declaredencoding \ascii
        !          8096:      \asciichardefs
        !          8097:   %
        !          8098:   \else \ifx \declaredencoding \lattwo
        !          8099:      \setnonasciicharscatcode\active
        !          8100:      \lattwochardefs
        !          8101:   %
        !          8102:   \else \ifx \declaredencoding \latone
        !          8103:      \setnonasciicharscatcode\active
        !          8104:      \latonechardefs
        !          8105:   %
        !          8106:   \else \ifx \declaredencoding \latnine
        !          8107:      \setnonasciicharscatcode\active
        !          8108:      \latninechardefs
        !          8109:   %
        !          8110:   \else \ifx \declaredencoding \utfeight
        !          8111:      \setnonasciicharscatcode\active
        !          8112:      \utfeightchardefs
        !          8113:   %
        !          8114:   \else
        !          8115:     \message{Unknown document encoding #1, ignoring.}%
        !          8116:   %
        !          8117:   \fi % utfeight
        !          8118:   \fi % latnine
        !          8119:   \fi % latone
        !          8120:   \fi % lattwo
        !          8121:   \fi % ascii
        !          8122: }
        !          8123: 
        !          8124: % A message to be logged when using a character that isn't available
        !          8125: % the default font encoding (OT1).
        !          8126: %
        !          8127: \def\missingcharmsg#1{\message{Character missing in OT1 encoding: #1.}}
        !          8128: 
        !          8129: % Take account of \c (plain) vs. \, (Texinfo) difference.
        !          8130: \def\cedilla#1{\ifx\c\ptexc\c{#1}\else\,{#1}\fi}
        !          8131: 
        !          8132: % First, make active non-ASCII characters in order for them to be
        !          8133: % correctly categorized when TeX reads the replacement text of
        !          8134: % macros containing the character definitions.
        !          8135: \setnonasciicharscatcode\active
        !          8136: %
        !          8137: % Latin1 (ISO-8859-1) character definitions.
        !          8138: \def\latonechardefs{%
        !          8139:   \gdef^^a0{~}
        !          8140:   \gdef^^a1{\exclamdown}
        !          8141:   \gdef^^a2{\missingcharmsg{CENT SIGN}}
        !          8142:   \gdef^^a3{{\pounds}}
        !          8143:   \gdef^^a4{\missingcharmsg{CURRENCY SIGN}}
        !          8144:   \gdef^^a5{\missingcharmsg{YEN SIGN}}
        !          8145:   \gdef^^a6{\missingcharmsg{BROKEN BAR}}
        !          8146:   \gdef^^a7{\S}
        !          8147:   \gdef^^a8{\"{}}
        !          8148:   \gdef^^a9{\copyright}
        !          8149:   \gdef^^aa{\ordf}
        !          8150:   \gdef^^ab{\guillemetleft}
        !          8151:   \gdef^^ac{$\lnot$}
        !          8152:   \gdef^^ad{\-}
        !          8153:   \gdef^^ae{\registeredsymbol}
        !          8154:   \gdef^^af{\={}}
        !          8155:   %
        !          8156:   \gdef^^b0{\textdegree}
        !          8157:   \gdef^^b1{$\pm$}
        !          8158:   \gdef^^b2{$^2$}
        !          8159:   \gdef^^b3{$^3$}
        !          8160:   \gdef^^b4{\'{}}
        !          8161:   \gdef^^b5{$\mu$}
        !          8162:   \gdef^^b6{\P}
        !          8163:   %
        !          8164:   \gdef^^b7{$^.$}
        !          8165:   \gdef^^b8{\cedilla\ }
        !          8166:   \gdef^^b9{$^1$}
        !          8167:   \gdef^^ba{\ordm}
        !          8168:   %
        !          8169:   \gdef^^bb{\guilletright}
        !          8170:   \gdef^^bc{$1\over4$}
        !          8171:   \gdef^^bd{$1\over2$}
        !          8172:   \gdef^^be{$3\over4$}
        !          8173:   \gdef^^bf{\questiondown}
        !          8174:   %
        !          8175:   \gdef^^c0{\`A}
        !          8176:   \gdef^^c1{\'A}
        !          8177:   \gdef^^c2{\^A}
        !          8178:   \gdef^^c3{\~A}
        !          8179:   \gdef^^c4{\"A}
        !          8180:   \gdef^^c5{\ringaccent A}
        !          8181:   \gdef^^c6{\AE}
        !          8182:   \gdef^^c7{\cedilla C}
        !          8183:   \gdef^^c8{\`E}
        !          8184:   \gdef^^c9{\'E}
        !          8185:   \gdef^^ca{\^E}
        !          8186:   \gdef^^cb{\"E}
        !          8187:   \gdef^^cc{\`I}
        !          8188:   \gdef^^cd{\'I}
        !          8189:   \gdef^^ce{\^I}
        !          8190:   \gdef^^cf{\"I}
        !          8191:   %
        !          8192:   \gdef^^d0{\DH}
        !          8193:   \gdef^^d1{\~N}
        !          8194:   \gdef^^d2{\`O}
        !          8195:   \gdef^^d3{\'O}
        !          8196:   \gdef^^d4{\^O}
        !          8197:   \gdef^^d5{\~O}
        !          8198:   \gdef^^d6{\"O}
        !          8199:   \gdef^^d7{$\times$}
        !          8200:   \gdef^^d8{\O}
        !          8201:   \gdef^^d9{\`U}
        !          8202:   \gdef^^da{\'U}
        !          8203:   \gdef^^db{\^U}
        !          8204:   \gdef^^dc{\"U}
        !          8205:   \gdef^^dd{\'Y}
        !          8206:   \gdef^^de{\TH}
        !          8207:   \gdef^^df{\ss}
        !          8208:   %
        !          8209:   \gdef^^e0{\`a}
        !          8210:   \gdef^^e1{\'a}
        !          8211:   \gdef^^e2{\^a}
        !          8212:   \gdef^^e3{\~a}
        !          8213:   \gdef^^e4{\"a}
        !          8214:   \gdef^^e5{\ringaccent a}
        !          8215:   \gdef^^e6{\ae}
        !          8216:   \gdef^^e7{\cedilla c}
        !          8217:   \gdef^^e8{\`e}
        !          8218:   \gdef^^e9{\'e}
        !          8219:   \gdef^^ea{\^e}
        !          8220:   \gdef^^eb{\"e}
        !          8221:   \gdef^^ec{\`{\dotless i}}
        !          8222:   \gdef^^ed{\'{\dotless i}}
        !          8223:   \gdef^^ee{\^{\dotless i}}
        !          8224:   \gdef^^ef{\"{\dotless i}}
        !          8225:   %
        !          8226:   \gdef^^f0{\dh}
        !          8227:   \gdef^^f1{\~n}
        !          8228:   \gdef^^f2{\`o}
        !          8229:   \gdef^^f3{\'o}
        !          8230:   \gdef^^f4{\^o}
        !          8231:   \gdef^^f5{\~o}
        !          8232:   \gdef^^f6{\"o}
        !          8233:   \gdef^^f7{$\div$}
        !          8234:   \gdef^^f8{\o}
        !          8235:   \gdef^^f9{\`u}
        !          8236:   \gdef^^fa{\'u}
        !          8237:   \gdef^^fb{\^u}
        !          8238:   \gdef^^fc{\"u}
        !          8239:   \gdef^^fd{\'y}
        !          8240:   \gdef^^fe{\th}
        !          8241:   \gdef^^ff{\"y}
        !          8242: }
        !          8243: 
        !          8244: % Latin9 (ISO-8859-15) encoding character definitions.
        !          8245: \def\latninechardefs{%
        !          8246:   % Encoding is almost identical to Latin1.
        !          8247:   \latonechardefs
        !          8248:   %
        !          8249:   \gdef^^a4{\euro}
        !          8250:   \gdef^^a6{\v S}
        !          8251:   \gdef^^a8{\v s}
        !          8252:   \gdef^^b4{\v Z}
        !          8253:   \gdef^^b8{\v z}
        !          8254:   \gdef^^bc{\OE}
        !          8255:   \gdef^^bd{\oe}
        !          8256:   \gdef^^be{\"Y}
        !          8257: }
        !          8258: 
        !          8259: % Latin2 (ISO-8859-2) character definitions.
        !          8260: \def\lattwochardefs{%
        !          8261:   \gdef^^a0{~}
        !          8262:   \gdef^^a1{\ogonek{A}}
        !          8263:   \gdef^^a2{\u{}}
        !          8264:   \gdef^^a3{\L}
        !          8265:   \gdef^^a4{\missingcharmsg{CURRENCY SIGN}}
        !          8266:   \gdef^^a5{\v L}
        !          8267:   \gdef^^a6{\'S}
        !          8268:   \gdef^^a7{\S}
        !          8269:   \gdef^^a8{\"{}}
        !          8270:   \gdef^^a9{\v S}
        !          8271:   \gdef^^aa{\cedilla S}
        !          8272:   \gdef^^ab{\v T}
        !          8273:   \gdef^^ac{\'Z}
        !          8274:   \gdef^^ad{\-}
        !          8275:   \gdef^^ae{\v Z}
        !          8276:   \gdef^^af{\dotaccent Z}
        !          8277:   %
        !          8278:   \gdef^^b0{\textdegree}
        !          8279:   \gdef^^b1{\ogonek{a}}
        !          8280:   \gdef^^b2{\ogonek{ }}
        !          8281:   \gdef^^b3{\l}
        !          8282:   \gdef^^b4{\'{}}
        !          8283:   \gdef^^b5{\v l}
        !          8284:   \gdef^^b6{\'s}
        !          8285:   \gdef^^b7{\v{}}
        !          8286:   \gdef^^b8{\cedilla\ }
        !          8287:   \gdef^^b9{\v s}
        !          8288:   \gdef^^ba{\cedilla s}
        !          8289:   \gdef^^bb{\v t}
        !          8290:   \gdef^^bc{\'z}
        !          8291:   \gdef^^bd{\H{}}
        !          8292:   \gdef^^be{\v z}
        !          8293:   \gdef^^bf{\dotaccent z}
        !          8294:   %
        !          8295:   \gdef^^c0{\'R}
        !          8296:   \gdef^^c1{\'A}
        !          8297:   \gdef^^c2{\^A}
        !          8298:   \gdef^^c3{\u A}
        !          8299:   \gdef^^c4{\"A}
        !          8300:   \gdef^^c5{\'L}
        !          8301:   \gdef^^c6{\'C}
        !          8302:   \gdef^^c7{\cedilla C}
        !          8303:   \gdef^^c8{\v C}
        !          8304:   \gdef^^c9{\'E}
        !          8305:   \gdef^^ca{\ogonek{E}}
        !          8306:   \gdef^^cb{\"E}
        !          8307:   \gdef^^cc{\v E}
        !          8308:   \gdef^^cd{\'I}
        !          8309:   \gdef^^ce{\^I}
        !          8310:   \gdef^^cf{\v D}
        !          8311:   %
        !          8312:   \gdef^^d0{\DH}
        !          8313:   \gdef^^d1{\'N}
        !          8314:   \gdef^^d2{\v N}
        !          8315:   \gdef^^d3{\'O}
        !          8316:   \gdef^^d4{\^O}
        !          8317:   \gdef^^d5{\H O}
        !          8318:   \gdef^^d6{\"O}
        !          8319:   \gdef^^d7{$\times$}
        !          8320:   \gdef^^d8{\v R}
        !          8321:   \gdef^^d9{\ringaccent U}
        !          8322:   \gdef^^da{\'U}
        !          8323:   \gdef^^db{\H U}
        !          8324:   \gdef^^dc{\"U}
        !          8325:   \gdef^^dd{\'Y}
        !          8326:   \gdef^^de{\cedilla T}
        !          8327:   \gdef^^df{\ss}
        !          8328:   %
        !          8329:   \gdef^^e0{\'r}
        !          8330:   \gdef^^e1{\'a}
        !          8331:   \gdef^^e2{\^a}
        !          8332:   \gdef^^e3{\u a}
        !          8333:   \gdef^^e4{\"a}
        !          8334:   \gdef^^e5{\'l}
        !          8335:   \gdef^^e6{\'c}
        !          8336:   \gdef^^e7{\cedilla c}
        !          8337:   \gdef^^e8{\v c}
        !          8338:   \gdef^^e9{\'e}
        !          8339:   \gdef^^ea{\ogonek{e}}
        !          8340:   \gdef^^eb{\"e}
        !          8341:   \gdef^^ec{\v e}
        !          8342:   \gdef^^ed{\'\i}
        !          8343:   \gdef^^ee{\^\i}
        !          8344:   \gdef^^ef{\v d}
        !          8345:   %
        !          8346:   \gdef^^f0{\dh}
        !          8347:   \gdef^^f1{\'n}
        !          8348:   \gdef^^f2{\v n}
        !          8349:   \gdef^^f3{\'o}
        !          8350:   \gdef^^f4{\^o}
        !          8351:   \gdef^^f5{\H o}
        !          8352:   \gdef^^f6{\"o}
        !          8353:   \gdef^^f7{$\div$}
        !          8354:   \gdef^^f8{\v r}
        !          8355:   \gdef^^f9{\ringaccent u}
        !          8356:   \gdef^^fa{\'u}
        !          8357:   \gdef^^fb{\H u}
        !          8358:   \gdef^^fc{\"u}
        !          8359:   \gdef^^fd{\'y}
        !          8360:   \gdef^^fe{\cedilla t}
        !          8361:   \gdef^^ff{\dotaccent{}}
        !          8362: }
        !          8363: 
        !          8364: % UTF-8 character definitions.
        !          8365: %
        !          8366: % This code to support UTF-8 is based on LaTeX's utf8.def, with some
        !          8367: % changes for Texinfo conventions.  It is included here under the GPL by
        !          8368: % permission from Frank Mittelbach and the LaTeX team.
        !          8369: %
        !          8370: \newcount\countUTFx
        !          8371: \newcount\countUTFy
        !          8372: \newcount\countUTFz
        !          8373: 
        !          8374: \gdef\UTFviiiTwoOctets#1#2{\expandafter
        !          8375:    \UTFviiiDefined\csname u8:#1\string #2\endcsname}
        !          8376: %
        !          8377: \gdef\UTFviiiThreeOctets#1#2#3{\expandafter
        !          8378:    \UTFviiiDefined\csname u8:#1\string #2\string #3\endcsname}
        !          8379: %
        !          8380: \gdef\UTFviiiFourOctets#1#2#3#4{\expandafter
        !          8381:    \UTFviiiDefined\csname u8:#1\string #2\string #3\string #4\endcsname}
        !          8382: 
        !          8383: \gdef\UTFviiiDefined#1{%
        !          8384:   \ifx #1\relax
        !          8385:     \message{\linenumber Unicode char \string #1 not defined for Texinfo}%
        !          8386:   \else
        !          8387:     \expandafter #1%
        !          8388:   \fi
        !          8389: }
        !          8390: 
        !          8391: \begingroup
        !          8392:   \catcode`\~13
        !          8393:   \catcode`\"12
        !          8394: 
        !          8395:   \def\UTFviiiLoop{%
        !          8396:     \global\catcode\countUTFx\active
        !          8397:     \uccode`\~\countUTFx
        !          8398:     \uppercase\expandafter{\UTFviiiTmp}%
        !          8399:     \advance\countUTFx by 1
        !          8400:     \ifnum\countUTFx < \countUTFy
        !          8401:       \expandafter\UTFviiiLoop
        !          8402:     \fi}
        !          8403: 
        !          8404:   \countUTFx = "C2
        !          8405:   \countUTFy = "E0
        !          8406:   \def\UTFviiiTmp{%
        !          8407:     \xdef~{\noexpand\UTFviiiTwoOctets\string~}}
        !          8408:   \UTFviiiLoop
        !          8409: 
        !          8410:   \countUTFx = "E0
        !          8411:   \countUTFy = "F0
        !          8412:   \def\UTFviiiTmp{%
        !          8413:     \xdef~{\noexpand\UTFviiiThreeOctets\string~}}
        !          8414:   \UTFviiiLoop
        !          8415: 
        !          8416:   \countUTFx = "F0
        !          8417:   \countUTFy = "F4
        !          8418:   \def\UTFviiiTmp{%
        !          8419:     \xdef~{\noexpand\UTFviiiFourOctets\string~}}
        !          8420:   \UTFviiiLoop
        !          8421: \endgroup
        !          8422: 
        !          8423: \begingroup
        !          8424:   \catcode`\"=12
        !          8425:   \catcode`\<=12
        !          8426:   \catcode`\.=12
        !          8427:   \catcode`\,=12
        !          8428:   \catcode`\;=12
        !          8429:   \catcode`\!=12
        !          8430:   \catcode`\~=13
        !          8431: 
        !          8432:   \gdef\DeclareUnicodeCharacter#1#2{%
        !          8433:     \countUTFz = "#1\relax
        !          8434:     \wlog{\space\space defining Unicode char U+#1 (decimal \the\countUTFz)}%
        !          8435:     \begingroup
        !          8436:       \parseXMLCharref
        !          8437:       \def\UTFviiiTwoOctets##1##2{%
        !          8438:         \csname u8:##1\string ##2\endcsname}%
        !          8439:       \def\UTFviiiThreeOctets##1##2##3{%
        !          8440:         \csname u8:##1\string ##2\string ##3\endcsname}%
        !          8441:       \def\UTFviiiFourOctets##1##2##3##4{%
        !          8442:         \csname u8:##1\string ##2\string ##3\string ##4\endcsname}%
        !          8443:       \expandafter\expandafter\expandafter\expandafter
        !          8444:        \expandafter\expandafter\expandafter
        !          8445:        \gdef\UTFviiiTmp{#2}%
        !          8446:     \endgroup}
        !          8447: 
        !          8448:   \gdef\parseXMLCharref{%
        !          8449:     \ifnum\countUTFz < "A0\relax
        !          8450:       \errhelp = \EMsimple
        !          8451:       \errmessage{Cannot define Unicode char value < 00A0}%
        !          8452:     \else\ifnum\countUTFz < "800\relax
        !          8453:       \parseUTFviiiA,%
        !          8454:       \parseUTFviiiB C\UTFviiiTwoOctets.,%
        !          8455:     \else\ifnum\countUTFz < "10000\relax
        !          8456:       \parseUTFviiiA;%
        !          8457:       \parseUTFviiiA,%
        !          8458:       \parseUTFviiiB E\UTFviiiThreeOctets.{,;}%
        !          8459:     \else
        !          8460:       \parseUTFviiiA;%
        !          8461:       \parseUTFviiiA,%
        !          8462:       \parseUTFviiiA!%
        !          8463:       \parseUTFviiiB F\UTFviiiFourOctets.{!,;}%
        !          8464:     \fi\fi\fi
        !          8465:   }
        !          8466: 
        !          8467:   \gdef\parseUTFviiiA#1{%
        !          8468:     \countUTFx = \countUTFz
        !          8469:     \divide\countUTFz by 64
        !          8470:     \countUTFy = \countUTFz
        !          8471:     \multiply\countUTFz by 64
        !          8472:     \advance\countUTFx by -\countUTFz
        !          8473:     \advance\countUTFx by 128
        !          8474:     \uccode `#1\countUTFx
        !          8475:     \countUTFz = \countUTFy}
        !          8476: 
        !          8477:   \gdef\parseUTFviiiB#1#2#3#4{%
        !          8478:     \advance\countUTFz by "#10\relax
        !          8479:     \uccode `#3\countUTFz
        !          8480:     \uppercase{\gdef\UTFviiiTmp{#2#3#4}}}
        !          8481: \endgroup
        !          8482: 
        !          8483: \def\utfeightchardefs{%
        !          8484:   \DeclareUnicodeCharacter{00A0}{\tie}
        !          8485:   \DeclareUnicodeCharacter{00A1}{\exclamdown}
        !          8486:   \DeclareUnicodeCharacter{00A3}{\pounds}
        !          8487:   \DeclareUnicodeCharacter{00A8}{\"{ }}
        !          8488:   \DeclareUnicodeCharacter{00A9}{\copyright}
        !          8489:   \DeclareUnicodeCharacter{00AA}{\ordf}
        !          8490:   \DeclareUnicodeCharacter{00AB}{\guillemetleft}
        !          8491:   \DeclareUnicodeCharacter{00AD}{\-}
        !          8492:   \DeclareUnicodeCharacter{00AE}{\registeredsymbol}
        !          8493:   \DeclareUnicodeCharacter{00AF}{\={ }}
        !          8494: 
        !          8495:   \DeclareUnicodeCharacter{00B0}{\ringaccent{ }}
        !          8496:   \DeclareUnicodeCharacter{00B4}{\'{ }}
        !          8497:   \DeclareUnicodeCharacter{00B8}{\cedilla{ }}
        !          8498:   \DeclareUnicodeCharacter{00BA}{\ordm}
        !          8499:   \DeclareUnicodeCharacter{00BB}{\guillemetright}
        !          8500:   \DeclareUnicodeCharacter{00BF}{\questiondown}
        !          8501: 
        !          8502:   \DeclareUnicodeCharacter{00C0}{\`A}
        !          8503:   \DeclareUnicodeCharacter{00C1}{\'A}
        !          8504:   \DeclareUnicodeCharacter{00C2}{\^A}
        !          8505:   \DeclareUnicodeCharacter{00C3}{\~A}
        !          8506:   \DeclareUnicodeCharacter{00C4}{\"A}
        !          8507:   \DeclareUnicodeCharacter{00C5}{\AA}
        !          8508:   \DeclareUnicodeCharacter{00C6}{\AE}
        !          8509:   \DeclareUnicodeCharacter{00C7}{\cedilla{C}}
        !          8510:   \DeclareUnicodeCharacter{00C8}{\`E}
        !          8511:   \DeclareUnicodeCharacter{00C9}{\'E}
        !          8512:   \DeclareUnicodeCharacter{00CA}{\^E}
        !          8513:   \DeclareUnicodeCharacter{00CB}{\"E}
        !          8514:   \DeclareUnicodeCharacter{00CC}{\`I}
        !          8515:   \DeclareUnicodeCharacter{00CD}{\'I}
        !          8516:   \DeclareUnicodeCharacter{00CE}{\^I}
        !          8517:   \DeclareUnicodeCharacter{00CF}{\"I}
        !          8518: 
        !          8519:   \DeclareUnicodeCharacter{00D0}{\DH}
        !          8520:   \DeclareUnicodeCharacter{00D1}{\~N}
        !          8521:   \DeclareUnicodeCharacter{00D2}{\`O}
        !          8522:   \DeclareUnicodeCharacter{00D3}{\'O}
        !          8523:   \DeclareUnicodeCharacter{00D4}{\^O}
        !          8524:   \DeclareUnicodeCharacter{00D5}{\~O}
        !          8525:   \DeclareUnicodeCharacter{00D6}{\"O}
        !          8526:   \DeclareUnicodeCharacter{00D8}{\O}
        !          8527:   \DeclareUnicodeCharacter{00D9}{\`U}
        !          8528:   \DeclareUnicodeCharacter{00DA}{\'U}
        !          8529:   \DeclareUnicodeCharacter{00DB}{\^U}
        !          8530:   \DeclareUnicodeCharacter{00DC}{\"U}
        !          8531:   \DeclareUnicodeCharacter{00DD}{\'Y}
        !          8532:   \DeclareUnicodeCharacter{00DE}{\TH}
        !          8533:   \DeclareUnicodeCharacter{00DF}{\ss}
        !          8534: 
        !          8535:   \DeclareUnicodeCharacter{00E0}{\`a}
        !          8536:   \DeclareUnicodeCharacter{00E1}{\'a}
        !          8537:   \DeclareUnicodeCharacter{00E2}{\^a}
        !          8538:   \DeclareUnicodeCharacter{00E3}{\~a}
        !          8539:   \DeclareUnicodeCharacter{00E4}{\"a}
        !          8540:   \DeclareUnicodeCharacter{00E5}{\aa}
        !          8541:   \DeclareUnicodeCharacter{00E6}{\ae}
        !          8542:   \DeclareUnicodeCharacter{00E7}{\cedilla{c}}
        !          8543:   \DeclareUnicodeCharacter{00E8}{\`e}
        !          8544:   \DeclareUnicodeCharacter{00E9}{\'e}
        !          8545:   \DeclareUnicodeCharacter{00EA}{\^e}
        !          8546:   \DeclareUnicodeCharacter{00EB}{\"e}
        !          8547:   \DeclareUnicodeCharacter{00EC}{\`{\dotless{i}}}
        !          8548:   \DeclareUnicodeCharacter{00ED}{\'{\dotless{i}}}
        !          8549:   \DeclareUnicodeCharacter{00EE}{\^{\dotless{i}}}
        !          8550:   \DeclareUnicodeCharacter{00EF}{\"{\dotless{i}}}
        !          8551: 
        !          8552:   \DeclareUnicodeCharacter{00F0}{\dh}
        !          8553:   \DeclareUnicodeCharacter{00F1}{\~n}
        !          8554:   \DeclareUnicodeCharacter{00F2}{\`o}
        !          8555:   \DeclareUnicodeCharacter{00F3}{\'o}
        !          8556:   \DeclareUnicodeCharacter{00F4}{\^o}
        !          8557:   \DeclareUnicodeCharacter{00F5}{\~o}
        !          8558:   \DeclareUnicodeCharacter{00F6}{\"o}
        !          8559:   \DeclareUnicodeCharacter{00F8}{\o}
        !          8560:   \DeclareUnicodeCharacter{00F9}{\`u}
        !          8561:   \DeclareUnicodeCharacter{00FA}{\'u}
        !          8562:   \DeclareUnicodeCharacter{00FB}{\^u}
        !          8563:   \DeclareUnicodeCharacter{00FC}{\"u}
        !          8564:   \DeclareUnicodeCharacter{00FD}{\'y}
        !          8565:   \DeclareUnicodeCharacter{00FE}{\th}
        !          8566:   \DeclareUnicodeCharacter{00FF}{\"y}
        !          8567: 
        !          8568:   \DeclareUnicodeCharacter{0100}{\=A}
        !          8569:   \DeclareUnicodeCharacter{0101}{\=a}
        !          8570:   \DeclareUnicodeCharacter{0102}{\u{A}}
        !          8571:   \DeclareUnicodeCharacter{0103}{\u{a}}
        !          8572:   \DeclareUnicodeCharacter{0104}{\ogonek{A}}
        !          8573:   \DeclareUnicodeCharacter{0105}{\ogonek{a}}
        !          8574:   \DeclareUnicodeCharacter{0106}{\'C}
        !          8575:   \DeclareUnicodeCharacter{0107}{\'c}
        !          8576:   \DeclareUnicodeCharacter{0108}{\^C}
        !          8577:   \DeclareUnicodeCharacter{0109}{\^c}
        !          8578:   \DeclareUnicodeCharacter{0118}{\ogonek{E}}
        !          8579:   \DeclareUnicodeCharacter{0119}{\ogonek{e}}
        !          8580:   \DeclareUnicodeCharacter{010A}{\dotaccent{C}}
        !          8581:   \DeclareUnicodeCharacter{010B}{\dotaccent{c}}
        !          8582:   \DeclareUnicodeCharacter{010C}{\v{C}}
        !          8583:   \DeclareUnicodeCharacter{010D}{\v{c}}
        !          8584:   \DeclareUnicodeCharacter{010E}{\v{D}}
        !          8585: 
        !          8586:   \DeclareUnicodeCharacter{0112}{\=E}
        !          8587:   \DeclareUnicodeCharacter{0113}{\=e}
        !          8588:   \DeclareUnicodeCharacter{0114}{\u{E}}
        !          8589:   \DeclareUnicodeCharacter{0115}{\u{e}}
        !          8590:   \DeclareUnicodeCharacter{0116}{\dotaccent{E}}
        !          8591:   \DeclareUnicodeCharacter{0117}{\dotaccent{e}}
        !          8592:   \DeclareUnicodeCharacter{011A}{\v{E}}
        !          8593:   \DeclareUnicodeCharacter{011B}{\v{e}}
        !          8594:   \DeclareUnicodeCharacter{011C}{\^G}
        !          8595:   \DeclareUnicodeCharacter{011D}{\^g}
        !          8596:   \DeclareUnicodeCharacter{011E}{\u{G}}
        !          8597:   \DeclareUnicodeCharacter{011F}{\u{g}}
        !          8598: 
        !          8599:   \DeclareUnicodeCharacter{0120}{\dotaccent{G}}
        !          8600:   \DeclareUnicodeCharacter{0121}{\dotaccent{g}}
        !          8601:   \DeclareUnicodeCharacter{0124}{\^H}
        !          8602:   \DeclareUnicodeCharacter{0125}{\^h}
        !          8603:   \DeclareUnicodeCharacter{0128}{\~I}
        !          8604:   \DeclareUnicodeCharacter{0129}{\~{\dotless{i}}}
        !          8605:   \DeclareUnicodeCharacter{012A}{\=I}
        !          8606:   \DeclareUnicodeCharacter{012B}{\={\dotless{i}}}
        !          8607:   \DeclareUnicodeCharacter{012C}{\u{I}}
        !          8608:   \DeclareUnicodeCharacter{012D}{\u{\dotless{i}}}
        !          8609: 
        !          8610:   \DeclareUnicodeCharacter{0130}{\dotaccent{I}}
        !          8611:   \DeclareUnicodeCharacter{0131}{\dotless{i}}
        !          8612:   \DeclareUnicodeCharacter{0132}{IJ}
        !          8613:   \DeclareUnicodeCharacter{0133}{ij}
        !          8614:   \DeclareUnicodeCharacter{0134}{\^J}
        !          8615:   \DeclareUnicodeCharacter{0135}{\^{\dotless{j}}}
        !          8616:   \DeclareUnicodeCharacter{0139}{\'L}
        !          8617:   \DeclareUnicodeCharacter{013A}{\'l}
        !          8618: 
        !          8619:   \DeclareUnicodeCharacter{0141}{\L}
        !          8620:   \DeclareUnicodeCharacter{0142}{\l}
        !          8621:   \DeclareUnicodeCharacter{0143}{\'N}
        !          8622:   \DeclareUnicodeCharacter{0144}{\'n}
        !          8623:   \DeclareUnicodeCharacter{0147}{\v{N}}
        !          8624:   \DeclareUnicodeCharacter{0148}{\v{n}}
        !          8625:   \DeclareUnicodeCharacter{014C}{\=O}
        !          8626:   \DeclareUnicodeCharacter{014D}{\=o}
        !          8627:   \DeclareUnicodeCharacter{014E}{\u{O}}
        !          8628:   \DeclareUnicodeCharacter{014F}{\u{o}}
        !          8629: 
        !          8630:   \DeclareUnicodeCharacter{0150}{\H{O}}
        !          8631:   \DeclareUnicodeCharacter{0151}{\H{o}}
        !          8632:   \DeclareUnicodeCharacter{0152}{\OE}
        !          8633:   \DeclareUnicodeCharacter{0153}{\oe}
        !          8634:   \DeclareUnicodeCharacter{0154}{\'R}
        !          8635:   \DeclareUnicodeCharacter{0155}{\'r}
        !          8636:   \DeclareUnicodeCharacter{0158}{\v{R}}
        !          8637:   \DeclareUnicodeCharacter{0159}{\v{r}}
        !          8638:   \DeclareUnicodeCharacter{015A}{\'S}
        !          8639:   \DeclareUnicodeCharacter{015B}{\'s}
        !          8640:   \DeclareUnicodeCharacter{015C}{\^S}
        !          8641:   \DeclareUnicodeCharacter{015D}{\^s}
        !          8642:   \DeclareUnicodeCharacter{015E}{\cedilla{S}}
        !          8643:   \DeclareUnicodeCharacter{015F}{\cedilla{s}}
        !          8644: 
        !          8645:   \DeclareUnicodeCharacter{0160}{\v{S}}
        !          8646:   \DeclareUnicodeCharacter{0161}{\v{s}}
        !          8647:   \DeclareUnicodeCharacter{0162}{\cedilla{t}}
        !          8648:   \DeclareUnicodeCharacter{0163}{\cedilla{T}}
        !          8649:   \DeclareUnicodeCharacter{0164}{\v{T}}
        !          8650: 
        !          8651:   \DeclareUnicodeCharacter{0168}{\~U}
        !          8652:   \DeclareUnicodeCharacter{0169}{\~u}
        !          8653:   \DeclareUnicodeCharacter{016A}{\=U}
        !          8654:   \DeclareUnicodeCharacter{016B}{\=u}
        !          8655:   \DeclareUnicodeCharacter{016C}{\u{U}}
        !          8656:   \DeclareUnicodeCharacter{016D}{\u{u}}
        !          8657:   \DeclareUnicodeCharacter{016E}{\ringaccent{U}}
        !          8658:   \DeclareUnicodeCharacter{016F}{\ringaccent{u}}
        !          8659: 
        !          8660:   \DeclareUnicodeCharacter{0170}{\H{U}}
        !          8661:   \DeclareUnicodeCharacter{0171}{\H{u}}
        !          8662:   \DeclareUnicodeCharacter{0174}{\^W}
        !          8663:   \DeclareUnicodeCharacter{0175}{\^w}
        !          8664:   \DeclareUnicodeCharacter{0176}{\^Y}
        !          8665:   \DeclareUnicodeCharacter{0177}{\^y}
        !          8666:   \DeclareUnicodeCharacter{0178}{\"Y}
        !          8667:   \DeclareUnicodeCharacter{0179}{\'Z}
        !          8668:   \DeclareUnicodeCharacter{017A}{\'z}
        !          8669:   \DeclareUnicodeCharacter{017B}{\dotaccent{Z}}
        !          8670:   \DeclareUnicodeCharacter{017C}{\dotaccent{z}}
        !          8671:   \DeclareUnicodeCharacter{017D}{\v{Z}}
        !          8672:   \DeclareUnicodeCharacter{017E}{\v{z}}
        !          8673: 
        !          8674:   \DeclareUnicodeCharacter{01C4}{D\v{Z}}
        !          8675:   \DeclareUnicodeCharacter{01C5}{D\v{z}}
        !          8676:   \DeclareUnicodeCharacter{01C6}{d\v{z}}
        !          8677:   \DeclareUnicodeCharacter{01C7}{LJ}
        !          8678:   \DeclareUnicodeCharacter{01C8}{Lj}
        !          8679:   \DeclareUnicodeCharacter{01C9}{lj}
        !          8680:   \DeclareUnicodeCharacter{01CA}{NJ}
        !          8681:   \DeclareUnicodeCharacter{01CB}{Nj}
        !          8682:   \DeclareUnicodeCharacter{01CC}{nj}
        !          8683:   \DeclareUnicodeCharacter{01CD}{\v{A}}
        !          8684:   \DeclareUnicodeCharacter{01CE}{\v{a}}
        !          8685:   \DeclareUnicodeCharacter{01CF}{\v{I}}
        !          8686: 
        !          8687:   \DeclareUnicodeCharacter{01D0}{\v{\dotless{i}}}
        !          8688:   \DeclareUnicodeCharacter{01D1}{\v{O}}
        !          8689:   \DeclareUnicodeCharacter{01D2}{\v{o}}
        !          8690:   \DeclareUnicodeCharacter{01D3}{\v{U}}
        !          8691:   \DeclareUnicodeCharacter{01D4}{\v{u}}
        !          8692: 
        !          8693:   \DeclareUnicodeCharacter{01E2}{\={\AE}}
        !          8694:   \DeclareUnicodeCharacter{01E3}{\={\ae}}
        !          8695:   \DeclareUnicodeCharacter{01E6}{\v{G}}
        !          8696:   \DeclareUnicodeCharacter{01E7}{\v{g}}
        !          8697:   \DeclareUnicodeCharacter{01E8}{\v{K}}
        !          8698:   \DeclareUnicodeCharacter{01E9}{\v{k}}
        !          8699: 
        !          8700:   \DeclareUnicodeCharacter{01F0}{\v{\dotless{j}}}
        !          8701:   \DeclareUnicodeCharacter{01F1}{DZ}
        !          8702:   \DeclareUnicodeCharacter{01F2}{Dz}
        !          8703:   \DeclareUnicodeCharacter{01F3}{dz}
        !          8704:   \DeclareUnicodeCharacter{01F4}{\'G}
        !          8705:   \DeclareUnicodeCharacter{01F5}{\'g}
        !          8706:   \DeclareUnicodeCharacter{01F8}{\`N}
        !          8707:   \DeclareUnicodeCharacter{01F9}{\`n}
        !          8708:   \DeclareUnicodeCharacter{01FC}{\'{\AE}}
        !          8709:   \DeclareUnicodeCharacter{01FD}{\'{\ae}}
        !          8710:   \DeclareUnicodeCharacter{01FE}{\'{\O}}
        !          8711:   \DeclareUnicodeCharacter{01FF}{\'{\o}}
        !          8712: 
        !          8713:   \DeclareUnicodeCharacter{021E}{\v{H}}
        !          8714:   \DeclareUnicodeCharacter{021F}{\v{h}}
        !          8715: 
        !          8716:   \DeclareUnicodeCharacter{0226}{\dotaccent{A}}
        !          8717:   \DeclareUnicodeCharacter{0227}{\dotaccent{a}}
        !          8718:   \DeclareUnicodeCharacter{0228}{\cedilla{E}}
        !          8719:   \DeclareUnicodeCharacter{0229}{\cedilla{e}}
        !          8720:   \DeclareUnicodeCharacter{022E}{\dotaccent{O}}
        !          8721:   \DeclareUnicodeCharacter{022F}{\dotaccent{o}}
        !          8722: 
        !          8723:   \DeclareUnicodeCharacter{0232}{\=Y}
        !          8724:   \DeclareUnicodeCharacter{0233}{\=y}
        !          8725:   \DeclareUnicodeCharacter{0237}{\dotless{j}}
        !          8726: 
        !          8727:   \DeclareUnicodeCharacter{02DB}{\ogonek{ }}
        !          8728: 
        !          8729:   \DeclareUnicodeCharacter{1E02}{\dotaccent{B}}
        !          8730:   \DeclareUnicodeCharacter{1E03}{\dotaccent{b}}
        !          8731:   \DeclareUnicodeCharacter{1E04}{\udotaccent{B}}
        !          8732:   \DeclareUnicodeCharacter{1E05}{\udotaccent{b}}
        !          8733:   \DeclareUnicodeCharacter{1E06}{\ubaraccent{B}}
        !          8734:   \DeclareUnicodeCharacter{1E07}{\ubaraccent{b}}
        !          8735:   \DeclareUnicodeCharacter{1E0A}{\dotaccent{D}}
        !          8736:   \DeclareUnicodeCharacter{1E0B}{\dotaccent{d}}
        !          8737:   \DeclareUnicodeCharacter{1E0C}{\udotaccent{D}}
        !          8738:   \DeclareUnicodeCharacter{1E0D}{\udotaccent{d}}
        !          8739:   \DeclareUnicodeCharacter{1E0E}{\ubaraccent{D}}
        !          8740:   \DeclareUnicodeCharacter{1E0F}{\ubaraccent{d}}
        !          8741: 
        !          8742:   \DeclareUnicodeCharacter{1E1E}{\dotaccent{F}}
        !          8743:   \DeclareUnicodeCharacter{1E1F}{\dotaccent{f}}
        !          8744: 
        !          8745:   \DeclareUnicodeCharacter{1E20}{\=G}
        !          8746:   \DeclareUnicodeCharacter{1E21}{\=g}
        !          8747:   \DeclareUnicodeCharacter{1E22}{\dotaccent{H}}
        !          8748:   \DeclareUnicodeCharacter{1E23}{\dotaccent{h}}
        !          8749:   \DeclareUnicodeCharacter{1E24}{\udotaccent{H}}
        !          8750:   \DeclareUnicodeCharacter{1E25}{\udotaccent{h}}
        !          8751:   \DeclareUnicodeCharacter{1E26}{\"H}
        !          8752:   \DeclareUnicodeCharacter{1E27}{\"h}
        !          8753: 
        !          8754:   \DeclareUnicodeCharacter{1E30}{\'K}
        !          8755:   \DeclareUnicodeCharacter{1E31}{\'k}
        !          8756:   \DeclareUnicodeCharacter{1E32}{\udotaccent{K}}
        !          8757:   \DeclareUnicodeCharacter{1E33}{\udotaccent{k}}
        !          8758:   \DeclareUnicodeCharacter{1E34}{\ubaraccent{K}}
        !          8759:   \DeclareUnicodeCharacter{1E35}{\ubaraccent{k}}
        !          8760:   \DeclareUnicodeCharacter{1E36}{\udotaccent{L}}
        !          8761:   \DeclareUnicodeCharacter{1E37}{\udotaccent{l}}
        !          8762:   \DeclareUnicodeCharacter{1E3A}{\ubaraccent{L}}
        !          8763:   \DeclareUnicodeCharacter{1E3B}{\ubaraccent{l}}
        !          8764:   \DeclareUnicodeCharacter{1E3E}{\'M}
        !          8765:   \DeclareUnicodeCharacter{1E3F}{\'m}
        !          8766: 
        !          8767:   \DeclareUnicodeCharacter{1E40}{\dotaccent{M}}
        !          8768:   \DeclareUnicodeCharacter{1E41}{\dotaccent{m}}
        !          8769:   \DeclareUnicodeCharacter{1E42}{\udotaccent{M}}
        !          8770:   \DeclareUnicodeCharacter{1E43}{\udotaccent{m}}
        !          8771:   \DeclareUnicodeCharacter{1E44}{\dotaccent{N}}
        !          8772:   \DeclareUnicodeCharacter{1E45}{\dotaccent{n}}
        !          8773:   \DeclareUnicodeCharacter{1E46}{\udotaccent{N}}
        !          8774:   \DeclareUnicodeCharacter{1E47}{\udotaccent{n}}
        !          8775:   \DeclareUnicodeCharacter{1E48}{\ubaraccent{N}}
        !          8776:   \DeclareUnicodeCharacter{1E49}{\ubaraccent{n}}
        !          8777: 
        !          8778:   \DeclareUnicodeCharacter{1E54}{\'P}
        !          8779:   \DeclareUnicodeCharacter{1E55}{\'p}
        !          8780:   \DeclareUnicodeCharacter{1E56}{\dotaccent{P}}
        !          8781:   \DeclareUnicodeCharacter{1E57}{\dotaccent{p}}
        !          8782:   \DeclareUnicodeCharacter{1E58}{\dotaccent{R}}
        !          8783:   \DeclareUnicodeCharacter{1E59}{\dotaccent{r}}
        !          8784:   \DeclareUnicodeCharacter{1E5A}{\udotaccent{R}}
        !          8785:   \DeclareUnicodeCharacter{1E5B}{\udotaccent{r}}
        !          8786:   \DeclareUnicodeCharacter{1E5E}{\ubaraccent{R}}
        !          8787:   \DeclareUnicodeCharacter{1E5F}{\ubaraccent{r}}
        !          8788: 
        !          8789:   \DeclareUnicodeCharacter{1E60}{\dotaccent{S}}
        !          8790:   \DeclareUnicodeCharacter{1E61}{\dotaccent{s}}
        !          8791:   \DeclareUnicodeCharacter{1E62}{\udotaccent{S}}
        !          8792:   \DeclareUnicodeCharacter{1E63}{\udotaccent{s}}
        !          8793:   \DeclareUnicodeCharacter{1E6A}{\dotaccent{T}}
        !          8794:   \DeclareUnicodeCharacter{1E6B}{\dotaccent{t}}
        !          8795:   \DeclareUnicodeCharacter{1E6C}{\udotaccent{T}}
        !          8796:   \DeclareUnicodeCharacter{1E6D}{\udotaccent{t}}
        !          8797:   \DeclareUnicodeCharacter{1E6E}{\ubaraccent{T}}
        !          8798:   \DeclareUnicodeCharacter{1E6F}{\ubaraccent{t}}
        !          8799: 
        !          8800:   \DeclareUnicodeCharacter{1E7C}{\~V}
        !          8801:   \DeclareUnicodeCharacter{1E7D}{\~v}
        !          8802:   \DeclareUnicodeCharacter{1E7E}{\udotaccent{V}}
        !          8803:   \DeclareUnicodeCharacter{1E7F}{\udotaccent{v}}
        !          8804: 
        !          8805:   \DeclareUnicodeCharacter{1E80}{\`W}
        !          8806:   \DeclareUnicodeCharacter{1E81}{\`w}
        !          8807:   \DeclareUnicodeCharacter{1E82}{\'W}
        !          8808:   \DeclareUnicodeCharacter{1E83}{\'w}
        !          8809:   \DeclareUnicodeCharacter{1E84}{\"W}
        !          8810:   \DeclareUnicodeCharacter{1E85}{\"w}
        !          8811:   \DeclareUnicodeCharacter{1E86}{\dotaccent{W}}
        !          8812:   \DeclareUnicodeCharacter{1E87}{\dotaccent{w}}
        !          8813:   \DeclareUnicodeCharacter{1E88}{\udotaccent{W}}
        !          8814:   \DeclareUnicodeCharacter{1E89}{\udotaccent{w}}
        !          8815:   \DeclareUnicodeCharacter{1E8A}{\dotaccent{X}}
        !          8816:   \DeclareUnicodeCharacter{1E8B}{\dotaccent{x}}
        !          8817:   \DeclareUnicodeCharacter{1E8C}{\"X}
        !          8818:   \DeclareUnicodeCharacter{1E8D}{\"x}
        !          8819:   \DeclareUnicodeCharacter{1E8E}{\dotaccent{Y}}
        !          8820:   \DeclareUnicodeCharacter{1E8F}{\dotaccent{y}}
        !          8821: 
        !          8822:   \DeclareUnicodeCharacter{1E90}{\^Z}
        !          8823:   \DeclareUnicodeCharacter{1E91}{\^z}
        !          8824:   \DeclareUnicodeCharacter{1E92}{\udotaccent{Z}}
        !          8825:   \DeclareUnicodeCharacter{1E93}{\udotaccent{z}}
        !          8826:   \DeclareUnicodeCharacter{1E94}{\ubaraccent{Z}}
        !          8827:   \DeclareUnicodeCharacter{1E95}{\ubaraccent{z}}
        !          8828:   \DeclareUnicodeCharacter{1E96}{\ubaraccent{h}}
        !          8829:   \DeclareUnicodeCharacter{1E97}{\"t}
        !          8830:   \DeclareUnicodeCharacter{1E98}{\ringaccent{w}}
        !          8831:   \DeclareUnicodeCharacter{1E99}{\ringaccent{y}}
        !          8832: 
        !          8833:   \DeclareUnicodeCharacter{1EA0}{\udotaccent{A}}
        !          8834:   \DeclareUnicodeCharacter{1EA1}{\udotaccent{a}}
        !          8835: 
        !          8836:   \DeclareUnicodeCharacter{1EB8}{\udotaccent{E}}
        !          8837:   \DeclareUnicodeCharacter{1EB9}{\udotaccent{e}}
        !          8838:   \DeclareUnicodeCharacter{1EBC}{\~E}
        !          8839:   \DeclareUnicodeCharacter{1EBD}{\~e}
        !          8840: 
        !          8841:   \DeclareUnicodeCharacter{1ECA}{\udotaccent{I}}
        !          8842:   \DeclareUnicodeCharacter{1ECB}{\udotaccent{i}}
        !          8843:   \DeclareUnicodeCharacter{1ECC}{\udotaccent{O}}
        !          8844:   \DeclareUnicodeCharacter{1ECD}{\udotaccent{o}}
        !          8845: 
        !          8846:   \DeclareUnicodeCharacter{1EE4}{\udotaccent{U}}
        !          8847:   \DeclareUnicodeCharacter{1EE5}{\udotaccent{u}}
        !          8848: 
        !          8849:   \DeclareUnicodeCharacter{1EF2}{\`Y}
        !          8850:   \DeclareUnicodeCharacter{1EF3}{\`y}
        !          8851:   \DeclareUnicodeCharacter{1EF4}{\udotaccent{Y}}
        !          8852: 
        !          8853:   \DeclareUnicodeCharacter{1EF8}{\~Y}
        !          8854:   \DeclareUnicodeCharacter{1EF9}{\~y}
        !          8855: 
        !          8856:   \DeclareUnicodeCharacter{2013}{--}
        !          8857:   \DeclareUnicodeCharacter{2014}{---}
        !          8858:   \DeclareUnicodeCharacter{2018}{\quoteleft}
        !          8859:   \DeclareUnicodeCharacter{2019}{\quoteright}
        !          8860:   \DeclareUnicodeCharacter{201A}{\quotesinglbase}
        !          8861:   \DeclareUnicodeCharacter{201C}{\quotedblleft}
        !          8862:   \DeclareUnicodeCharacter{201D}{\quotedblright}
        !          8863:   \DeclareUnicodeCharacter{201E}{\quotedblbase}
        !          8864:   \DeclareUnicodeCharacter{2022}{\bullet}
        !          8865:   \DeclareUnicodeCharacter{2026}{\dots}
        !          8866:   \DeclareUnicodeCharacter{2039}{\guilsinglleft}
        !          8867:   \DeclareUnicodeCharacter{203A}{\guilsinglright}
        !          8868:   \DeclareUnicodeCharacter{20AC}{\euro}
        !          8869: 
        !          8870:   \DeclareUnicodeCharacter{2192}{\expansion}
        !          8871:   \DeclareUnicodeCharacter{21D2}{\result}
        !          8872: 
        !          8873:   \DeclareUnicodeCharacter{2212}{\minus}
        !          8874:   \DeclareUnicodeCharacter{2217}{\point}
        !          8875:   \DeclareUnicodeCharacter{2261}{\equiv}
        !          8876: }% end of \utfeightchardefs
        !          8877: 
        !          8878: 
        !          8879: % US-ASCII character definitions.
        !          8880: \def\asciichardefs{% nothing need be done
        !          8881:    \relax
        !          8882: }
        !          8883: 
        !          8884: % Make non-ASCII characters printable again for compatibility with
        !          8885: % existing Texinfo documents that may use them, even without declaring a
        !          8886: % document encoding.
        !          8887: %
        !          8888: \setnonasciicharscatcode \other
        !          8889: 
        !          8890: 
        !          8891: \message{formatting,}
        !          8892: 
        !          8893: \newdimen\defaultparindent \defaultparindent = 15pt
        !          8894: 
        !          8895: \chapheadingskip = 15pt plus 4pt minus 2pt
        !          8896: \secheadingskip = 12pt plus 3pt minus 2pt
        !          8897: \subsecheadingskip = 9pt plus 2pt minus 2pt
        !          8898: 
        !          8899: % Prevent underfull vbox error messages.
        !          8900: \vbadness = 10000
        !          8901: 
        !          8902: % Don't be so finicky about underfull hboxes, either.
        !          8903: \hbadness = 2000
        !          8904: 
        !          8905: % Following George Bush, get rid of widows and orphans.
        !          8906: \widowpenalty=10000
        !          8907: \clubpenalty=10000
        !          8908: 
        !          8909: % Use TeX 3.0's \emergencystretch to help line breaking, but if we're
        !          8910: % using an old version of TeX, don't do anything.  We want the amount of
        !          8911: % stretch added to depend on the line length, hence the dependence on
        !          8912: % \hsize.  We call this whenever the paper size is set.
        !          8913: %
        !          8914: \def\setemergencystretch{%
        !          8915:   \ifx\emergencystretch\thisisundefined
        !          8916:     % Allow us to assign to \emergencystretch anyway.
        !          8917:     \def\emergencystretch{\dimen0}%
        !          8918:   \else
        !          8919:     \emergencystretch = .15\hsize
        !          8920:   \fi
        !          8921: }
        !          8922: 
        !          8923: % Parameters in order: 1) textheight; 2) textwidth;
        !          8924: % 3) voffset; 4) hoffset; 5) binding offset; 6) topskip;
        !          8925: % 7) physical page height; 8) physical page width.
        !          8926: %
        !          8927: % We also call \setleading{\textleading}, so the caller should define
        !          8928: % \textleading.  The caller should also set \parskip.
        !          8929: %
        !          8930: \def\internalpagesizes#1#2#3#4#5#6#7#8{%
        !          8931:   \voffset = #3\relax
        !          8932:   \topskip = #6\relax
        !          8933:   \splittopskip = \topskip
        !          8934:   %
        !          8935:   \vsize = #1\relax
        !          8936:   \advance\vsize by \topskip
        !          8937:   \outervsize = \vsize
        !          8938:   \advance\outervsize by 2\topandbottommargin
        !          8939:   \pageheight = \vsize
        !          8940:   %
        !          8941:   \hsize = #2\relax
        !          8942:   \outerhsize = \hsize
        !          8943:   \advance\outerhsize by 0.5in
        !          8944:   \pagewidth = \hsize
        !          8945:   %
        !          8946:   \normaloffset = #4\relax
        !          8947:   \bindingoffset = #5\relax
        !          8948:   %
        !          8949:   \ifpdf
        !          8950:     \pdfpageheight #7\relax
        !          8951:     \pdfpagewidth #8\relax
        !          8952:     % if we don't reset these, they will remain at "1 true in" of
        !          8953:     % whatever layout pdftex was dumped with.
        !          8954:     \pdfhorigin = 1 true in
        !          8955:     \pdfvorigin = 1 true in
        !          8956:   \fi
        !          8957:   %
        !          8958:   \setleading{\textleading}
        !          8959:   %
        !          8960:   \parindent = \defaultparindent
        !          8961:   \setemergencystretch
        !          8962: }
        !          8963: 
        !          8964: % @letterpaper (the default).
        !          8965: \def\letterpaper{{\globaldefs = 1
        !          8966:   \parskip = 3pt plus 2pt minus 1pt
        !          8967:   \textleading = 13.2pt
        !          8968:   %
        !          8969:   % If page is nothing but text, make it come out even.
        !          8970:   \internalpagesizes{607.2pt}{6in}% that's 46 lines
        !          8971:                     {\voffset}{.25in}%
        !          8972:                     {\bindingoffset}{36pt}%
        !          8973:                     {11in}{8.5in}%
        !          8974: }}
        !          8975: 
        !          8976: % Use @smallbook to reset parameters for 7x9.25 trim size.
        !          8977: \def\smallbook{{\globaldefs = 1
        !          8978:   \parskip = 2pt plus 1pt
        !          8979:   \textleading = 12pt
        !          8980:   %
        !          8981:   \internalpagesizes{7.5in}{5in}%
        !          8982:                     {-.2in}{0in}%
        !          8983:                     {\bindingoffset}{16pt}%
        !          8984:                     {9.25in}{7in}%
        !          8985:   %
        !          8986:   \lispnarrowing = 0.3in
        !          8987:   \tolerance = 700
        !          8988:   \hfuzz = 1pt
        !          8989:   \contentsrightmargin = 0pt
        !          8990:   \defbodyindent = .5cm
        !          8991: }}
        !          8992: 
        !          8993: % Use @smallerbook to reset parameters for 6x9 trim size.
        !          8994: % (Just testing, parameters still in flux.)
        !          8995: \def\smallerbook{{\globaldefs = 1
        !          8996:   \parskip = 1.5pt plus 1pt
        !          8997:   \textleading = 12pt
        !          8998:   %
        !          8999:   \internalpagesizes{7.4in}{4.8in}%
        !          9000:                     {-.2in}{-.4in}%
        !          9001:                     {0pt}{14pt}%
        !          9002:                     {9in}{6in}%
        !          9003:   %
        !          9004:   \lispnarrowing = 0.25in
        !          9005:   \tolerance = 700
        !          9006:   \hfuzz = 1pt
        !          9007:   \contentsrightmargin = 0pt
        !          9008:   \defbodyindent = .4cm
        !          9009: }}
        !          9010: 
        !          9011: % Use @afourpaper to print on European A4 paper.
        !          9012: \def\afourpaper{{\globaldefs = 1
        !          9013:   \parskip = 3pt plus 2pt minus 1pt
        !          9014:   \textleading = 13.2pt
        !          9015:   %
        !          9016:   % Double-side printing via postscript on Laserjet 4050
        !          9017:   % prints double-sided nicely when \bindingoffset=10mm and \hoffset=-6mm.
        !          9018:   % To change the settings for a different printer or situation, adjust
        !          9019:   % \normaloffset until the front-side and back-side texts align.  Then
        !          9020:   % do the same for \bindingoffset.  You can set these for testing in
        !          9021:   % your texinfo source file like this:
        !          9022:   % @tex
        !          9023:   % \global\normaloffset = -6mm
        !          9024:   % \global\bindingoffset = 10mm
        !          9025:   % @end tex
        !          9026:   \internalpagesizes{673.2pt}{160mm}% that's 51 lines
        !          9027:                     {\voffset}{\hoffset}%
        !          9028:                     {\bindingoffset}{44pt}%
        !          9029:                     {297mm}{210mm}%
        !          9030:   %
        !          9031:   \tolerance = 700
        !          9032:   \hfuzz = 1pt
        !          9033:   \contentsrightmargin = 0pt
        !          9034:   \defbodyindent = 5mm
        !          9035: }}
        !          9036: 
        !          9037: % Use @afivepaper to print on European A5 paper.
        !          9038: % From romildo@urano.iceb.ufop.br, 2 July 2000.
        !          9039: % He also recommends making @example and @lisp be small.
        !          9040: \def\afivepaper{{\globaldefs = 1
        !          9041:   \parskip = 2pt plus 1pt minus 0.1pt
        !          9042:   \textleading = 12.5pt
        !          9043:   %
        !          9044:   \internalpagesizes{160mm}{120mm}%
        !          9045:                     {\voffset}{\hoffset}%
        !          9046:                     {\bindingoffset}{8pt}%
        !          9047:                     {210mm}{148mm}%
        !          9048:   %
        !          9049:   \lispnarrowing = 0.2in
        !          9050:   \tolerance = 800
        !          9051:   \hfuzz = 1.2pt
        !          9052:   \contentsrightmargin = 0pt
        !          9053:   \defbodyindent = 2mm
        !          9054:   \tableindent = 12mm
        !          9055: }}
        !          9056: 
        !          9057: % A specific text layout, 24x15cm overall, intended for A4 paper.
        !          9058: \def\afourlatex{{\globaldefs = 1
        !          9059:   \afourpaper
        !          9060:   \internalpagesizes{237mm}{150mm}%
        !          9061:                     {\voffset}{4.6mm}%
        !          9062:                     {\bindingoffset}{7mm}%
        !          9063:                     {297mm}{210mm}%
        !          9064:   %
        !          9065:   % Must explicitly reset to 0 because we call \afourpaper.
        !          9066:   \globaldefs = 0
        !          9067: }}
        !          9068: 
        !          9069: % Use @afourwide to print on A4 paper in landscape format.
        !          9070: \def\afourwide{{\globaldefs = 1
        !          9071:   \afourpaper
        !          9072:   \internalpagesizes{241mm}{165mm}%
        !          9073:                     {\voffset}{-2.95mm}%
        !          9074:                     {\bindingoffset}{7mm}%
        !          9075:                     {297mm}{210mm}%
        !          9076:   \globaldefs = 0
        !          9077: }}
        !          9078: 
        !          9079: % @pagesizes TEXTHEIGHT[,TEXTWIDTH]
        !          9080: % Perhaps we should allow setting the margins, \topskip, \parskip,
        !          9081: % and/or leading, also. Or perhaps we should compute them somehow.
        !          9082: %
        !          9083: \parseargdef\pagesizes{\pagesizesyyy #1,,\finish}
        !          9084: \def\pagesizesyyy#1,#2,#3\finish{{%
        !          9085:   \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \hsize=#2\relax \fi
        !          9086:   \globaldefs = 1
        !          9087:   %
        !          9088:   \parskip = 3pt plus 2pt minus 1pt
        !          9089:   \setleading{\textleading}%
        !          9090:   %
        !          9091:   \dimen0 = #1\relax
        !          9092:   \advance\dimen0 by \voffset
        !          9093:   %
        !          9094:   \dimen2 = \hsize
        !          9095:   \advance\dimen2 by \normaloffset
        !          9096:   %
        !          9097:   \internalpagesizes{#1}{\hsize}%
        !          9098:                     {\voffset}{\normaloffset}%
        !          9099:                     {\bindingoffset}{44pt}%
        !          9100:                     {\dimen0}{\dimen2}%
        !          9101: }}
        !          9102: 
        !          9103: % Set default to letter.
        !          9104: %
        !          9105: \letterpaper
        !          9106: 
        !          9107: 
        !          9108: \message{and turning on texinfo input format.}
        !          9109: 
        !          9110: % DEL is a comment character, in case @c does not suffice.
        !          9111: \catcode`\^^? = 14
        !          9112: 
        !          9113: % Define macros to output various characters with catcode for normal text.
        !          9114: \catcode`\"=\other
        !          9115: \catcode`\~=\other
        !          9116: \catcode`\^=\other
        !          9117: \catcode`\_=\other
        !          9118: \catcode`\|=\other
        !          9119: \catcode`\<=\other
        !          9120: \catcode`\>=\other
        !          9121: \catcode`\+=\other
        !          9122: \catcode`\$=\other
        !          9123: \def\normaldoublequote{"}
        !          9124: \def\normaltilde{~}
        !          9125: \def\normalcaret{^}
        !          9126: \def\normalunderscore{_}
        !          9127: \def\normalverticalbar{|}
        !          9128: \def\normalless{<}
        !          9129: \def\normalgreater{>}
        !          9130: \def\normalplus{+}
        !          9131: \def\normaldollar{$}%$ font-lock fix
        !          9132: 
        !          9133: % This macro is used to make a character print one way in \tt
        !          9134: % (where it can probably be output as-is), and another way in other fonts,
        !          9135: % where something hairier probably needs to be done.
        !          9136: %
        !          9137: % #1 is what to print if we are indeed using \tt; #2 is what to print
        !          9138: % otherwise.  Since all the Computer Modern typewriter fonts have zero
        !          9139: % interword stretch (and shrink), and it is reasonable to expect all
        !          9140: % typewriter fonts to have this, we can check that font parameter.
        !          9141: %
        !          9142: \def\ifusingtt#1#2{\ifdim \fontdimen3\font=0pt #1\else #2\fi}
        !          9143: 
        !          9144: % Same as above, but check for italic font.  Actually this also catches
        !          9145: % non-italic slanted fonts since it is impossible to distinguish them from
        !          9146: % italic fonts.  But since this is only used by $ and it uses \sl anyway
        !          9147: % this is not a problem.
        !          9148: \def\ifusingit#1#2{\ifdim \fontdimen1\font>0pt #1\else #2\fi}
        !          9149: 
        !          9150: % Turn off all special characters except @
        !          9151: % (and those which the user can use as if they were ordinary).
        !          9152: % Most of these we simply print from the \tt font, but for some, we can
        !          9153: % use math or other variants that look better in normal text.
        !          9154: 
        !          9155: \catcode`\"=\active
        !          9156: \def\activedoublequote{{\tt\char34}}
        !          9157: \let"=\activedoublequote
        !          9158: \catcode`\~=\active
        !          9159: \def~{{\tt\char126}}
        !          9160: \chardef\hat=`\^
        !          9161: \catcode`\^=\active
        !          9162: \def^{{\tt \hat}}
        !          9163: 
        !          9164: \catcode`\_=\active
        !          9165: \def_{\ifusingtt\normalunderscore\_}
        !          9166: \let\realunder=_
        !          9167: % Subroutine for the previous macro.
        !          9168: \def\_{\leavevmode \kern.07em \vbox{\hrule width.3em height.1ex}\kern .07em }
        !          9169: 
        !          9170: \catcode`\|=\active
        !          9171: \def|{{\tt\char124}}
        !          9172: \chardef \less=`\<
        !          9173: \catcode`\<=\active
        !          9174: \def<{{\tt \less}}
        !          9175: \chardef \gtr=`\>
        !          9176: \catcode`\>=\active
        !          9177: \def>{{\tt \gtr}}
        !          9178: \catcode`\+=\active
        !          9179: \def+{{\tt \char 43}}
        !          9180: \catcode`\$=\active
        !          9181: \def${\ifusingit{{\sl\$}}\normaldollar}%$ font-lock fix
        !          9182: 
        !          9183: % If a .fmt file is being used, characters that might appear in a file
        !          9184: % name cannot be active until we have parsed the command line.
        !          9185: % So turn them off again, and have \everyjob (or @setfilename) turn them on.
        !          9186: % \otherifyactive is called near the end of this file.
        !          9187: \def\otherifyactive{\catcode`+=\other \catcode`\_=\other}
        !          9188: 
        !          9189: % Used sometimes to turn off (effectively) the active characters even after
        !          9190: % parsing them.
        !          9191: \def\turnoffactive{%
        !          9192:   \normalturnoffactive
        !          9193:   \otherbackslash
        !          9194: }
        !          9195: 
        !          9196: \catcode`\@=0
        !          9197: 
        !          9198: % \backslashcurfont outputs one backslash character in current font,
        !          9199: % as in \char`\\.
        !          9200: \global\chardef\backslashcurfont=`\\
        !          9201: \global\let\rawbackslashxx=\backslashcurfont  % let existing .??s files work
        !          9202: 
        !          9203: % \realbackslash is an actual character `\' with catcode other, and
        !          9204: % \doublebackslash is two of them (for the pdf outlines).
        !          9205: {\catcode`\\=\other @gdef@realbackslash{\} @gdef@doublebackslash{\\}}
        !          9206: 
        !          9207: % In texinfo, backslash is an active character; it prints the backslash
        !          9208: % in fixed width font.
        !          9209: \catcode`\\=\active
        !          9210: @def@normalbackslash{{@tt@backslashcurfont}}
        !          9211: % On startup, @fixbackslash assigns:
        !          9212: %  @let \ = @normalbackslash
        !          9213: 
        !          9214: % \rawbackslash defines an active \ to do \backslashcurfont.
        !          9215: % \otherbackslash defines an active \ to be a literal `\' character with
        !          9216: % catcode other.
        !          9217: @gdef@rawbackslash{@let\=@backslashcurfont}
        !          9218: @gdef@otherbackslash{@let\=@realbackslash}
        !          9219: 
        !          9220: % Same as @turnoffactive except outputs \ as {\tt\char`\\} instead of
        !          9221: % the literal character `\'.
        !          9222: %
        !          9223: @def@normalturnoffactive{%
        !          9224:   @let\=@normalbackslash
        !          9225:   @let"=@normaldoublequote
        !          9226:   @let~=@normaltilde
        !          9227:   @let^=@normalcaret
        !          9228:   @let_=@normalunderscore
        !          9229:   @let|=@normalverticalbar
        !          9230:   @let<=@normalless
        !          9231:   @let>=@normalgreater
        !          9232:   @let+=@normalplus
        !          9233:   @let$=@normaldollar %$ font-lock fix
        !          9234:   @markupsetuplqdefault
        !          9235:   @markupsetuprqdefault
        !          9236:   @unsepspaces
        !          9237: }
        !          9238: 
        !          9239: % Make _ and + \other characters, temporarily.
        !          9240: % This is canceled by @fixbackslash.
        !          9241: @otherifyactive
        !          9242: 
        !          9243: % If a .fmt file is being used, we don't want the `\input texinfo' to show up.
        !          9244: % That is what \eatinput is for; after that, the `\' should revert to printing
        !          9245: % a backslash.
        !          9246: %
        !          9247: @gdef@eatinput input texinfo{@fixbackslash}
        !          9248: @global@let\ = @eatinput
        !          9249: 
        !          9250: % On the other hand, perhaps the file did not have a `\input texinfo'. Then
        !          9251: % the first `\' in the file would cause an error. This macro tries to fix
        !          9252: % that, assuming it is called before the first `\' could plausibly occur.
        !          9253: % Also turn back on active characters that might appear in the input
        !          9254: % file name, in case not using a pre-dumped format.
        !          9255: %
        !          9256: @gdef@fixbackslash{%
        !          9257:   @ifx\@eatinput @let\ = @normalbackslash @fi
        !          9258:   @catcode`+=@active
        !          9259:   @catcode`@_=@active
        !          9260: }
        !          9261: 
        !          9262: % Say @foo, not \foo, in error messages.
        !          9263: @escapechar = `@@
        !          9264: 
        !          9265: % These look ok in all fonts, so just make them not special.
        !          9266: @catcode`@& = @other
        !          9267: @catcode`@# = @other
        !          9268: @catcode`@% = @other
        !          9269: 
        !          9270: @c Finally, make ` and ' active, so that txicodequoteundirected and
        !          9271: @c txicodequotebacktick work right in, e.g., @w{@code{`foo'}}.  If we
        !          9272: @c don't make ` and ' active, @code will not get them as active chars.
        !          9273: @c Do this last of all since we use ` in the previous @catcode assignments.
        !          9274: @catcode`@'=@active
        !          9275: @catcode`@`=@active
        !          9276: @markupsetuplqdefault
        !          9277: @markupsetuprqdefault
        !          9278: 
        !          9279: @c Local variables:
        !          9280: @c eval: (add-hook 'write-file-hooks 'time-stamp)
        !          9281: @c page-delimiter: "^\\\\message"
        !          9282: @c time-stamp-start: "def\\\\texinfoversion{"
        !          9283: @c time-stamp-format: "%:y-%02m-%02d.%02H"
        !          9284: @c time-stamp-end: "}"
        !          9285: @c End:
        !          9286: 
        !          9287: @c vim:sw=2:
        !          9288: 
        !          9289: @ignore
        !          9290:    arch-tag: e1b36e32-c96e-4135-a41a-0b2efa2ea115
        !          9291: @end ignore

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