1.1 misho 1: <!ENTITY % b SYSTEM "http://example.org/b/b.dtd"> 2: %b; 3: <!ENTITY % a SYSTEM "http://example.org/a/a.dtd"> 4: %a; 5: <!ENTITY % c SYSTEM "http://example.org/c/c.dtd"> 6: %c; 7: <!ELEMENT bac (b, a, c)>