sgmls: SGML error at test028.sgm, line 5 in declaration parameter 4:
       Content model token 97: more than GRPGTCNT content model tokens; terminated
sgmls: SGML error at test028.sgm, line 6 at "<":
       Invalid character(s) ignored; attempting to resume DOCTYPE subset
sgmls: Warning at test028.sgm, line 8 at record start:
       Element "BAD" used in DTD but not defined
