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lrzsz ver 0.12.20

    1: ZModem standard:
    2:     lrzsz is compatible with standard zmodem as long as you don't use
    3:     certain options:
    4:     -8 is incompatible with the standard, but should work with most
    5:        DOS/Atari/Amiga ZModems. It's a common extension, but a dangerous
    6:        one. Do not use it unless you know that the receiver can handle it.
    7:     -S is incompatible with certain ZModems which use the TIMESYNC bit
    8:        for other purposes (timesync is a protocol extension by Peter
    9:        Mandrella, read timesync.doc for more information). The default
   10:        is to disable timesync, you must use the `S' option to enable it.
   11: 
   12: 
   13: Calling conventions:
   14:     lrzsz is not fully compatible with older UNIX ZModems:
   15:     - PUBDIR (/var/spool/uucppublic) is normally disabled. If you like
   16:       public writable directories please use:
   17:         configure --enable-pubdir=/var/spool/uucppublic
   18:     - lrz defaults to restricted mode, in which the sender must not upload
   19:       any files outside the working directory or PUBDIR (if pubdir is
   20:       enabled). With the old version you had to set SHELL=rsh.
   21:       For more information read the SECURITY paragraph in lrz.1.
   22:     - lrz: remote command execution is disabled. To enable it use -C (but
   23:       be careful - the sender might delete all your files).
   24:     - lrz: does not set executable bits for any files it received under
   25:       a restricted shell.