> - should i stick with DTD, due to innate fear the below technologies 
> won't stick ( and parsers aren't supported )
> - go the whole hog with RDF, and gain the benefits of their lovely 
> inheritance structure
> - XML schema
> - figure out how Schematron and RELAX fit in the picture
> 

There's an article about Schematron at the moment on http://www.xml.com, you
should read that if you haven't already! 

The same site should also have articles on RELAX, XML Schema, and RDF in the
archive. 

Linda


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list