dtd documentation

DuCharme, Robert DuCharmR at moodys.com
Fri Oct 22 17:43:01 BST 1999

>I am interested in a tool to document dtd-files. 
>It should have the same functionality as javadoc for java-files or
>doc++ for c++. Where can I get such a tool ?

It's currently a bit ironic that XML doesn't offer built-in markup for
description of its structures the way Java does (the "@" fielded values that
javadoc looks for) since markup to automate documentation generation is part
of the point of XML and especially its parent SGML. The W3C Schema Working
Group has formally stated that fixing this is one of their goals, although
they hadn't addressed it yet in the September Schema Working Draft (see

That being said, check out the dtd2html script that is part of Earl Hood's
perlSGML utilities at http://www.oac.uci.edu/indiv/ehood/perlSGML.html. It
generates a series of HTML files to document the relationships within a DTD,
and in my quick tests it works fine for XML as well as SGML. It also has its
own notation for adding DTD comments that will show up in the generated

(perlSGML also offers a very handy dtddiff program. I used it to generate
the xml-dev posting showing the differences between the May and September
drafts of Part 1 of the Schema Working Draft. See
http://www.lists.ic.ac.uk/hypermail/xml-dev/xml-dev-Sep-1999/1241.html for
some sample dtddiff output.)

Bob DuCharme       www.snee.com/bob       <bob@  
snee.com>  see www.snee.com/bob/xmlann for "XML:
The Annotated Specification" from Prentice Hall.

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