sgmls: SGML error at test131.sgm, line 36 in declaration parameter 115:
       Unrecognized keyword "NONSGML"
sgmls: SGML error at test131.sgm, line 36 at " ":
       No DOCTYPE declaration; document type is unknown
sgmls: SGML error at test131.sgm, line 43 at "e":
       DOCTYPE markup declaration not permitted here; declaration ended
       Element structure: *DOCTYPE
sgmls: SGML error at test131.sgm, line 44 at "t":
       ELEMENT markup declaration not permitted here; declaration ended
       Element structure: *DOCTYPE
sgmls: SGML error at test131.sgm, line 46 at ">":
       Undefined DOC start-tag GI ignored; not used in DTD
       Element structure: *DOCTYPE