Two questions re. PSGML validation issues

Hello Jerry! While implementing HTML document validation for our next-generation XEmacs website I have some questions about PSGML: 1. How can I access the DTD doctype of buffer after validating it (i.e. it has been parsed and all information should be available via sgml-dtd-info)? I have verified that sgml-dtd-info contains correct information after calling (sgml-parse-prolog) along the way. 2. How can I access the error message reported by (sgml-next-trouble-spot)? I tried using (if sgml-last-element (setq context (sgml-element-context-string sgml-last-element))) but sgml-last-element is nil even though an error occured. To be honest, it worked in a debugging session of XEmacs, but not in a freshly started one. I'd appreciate any help. Best regards, Adrian -- Adrian Aichner <adrian(a)xemacs.org&gt;