>Does anybody know where I can find a good source for standards & guide
>when designing and developing DTDs ?
The only standard per se is the XML 1.0 standard. For guidelines, David
Megginson's "Structuring XML Documents" is very good. Before that, the only
book on DTD development that I know of was Eve Maler and Jeanne El
Andaloussi's "Developing SGML DTDs." The SGML DTD syntax is slightly
different, but the principles are the same, and there's a lot to learn from
this book as well.
Bob DuCharme www.snee.com/bob <bob@
snee.com> see www.snee.com/bob/xmlann for "XML:
The Annotated Specification" from Prentice Hall.