Is XHTML supported in all DTD's?

[John Messmer]

Hello all,

We're considering a information/content management system that can be 
used by both our technical and business people. We're knee deep in 
re-building our existing software using XPFE and thought if Composer 
leverages the same technology framework then maybe it could be used for 
our documentation system that works off our XML data format for 
proprietary business data.

The general idea is that we could set up authoring content/documentation 
using composer to generate XHTML, having it published to our central web 
directories. Then we'd use server side scripting to parse the XML (XHTML 
specifically) files and join them with other XML defined data in order 
to generate and serve the final documents.

The key question is whether or not Composer is capable of generating the 
 desired XHTML WITHOUT putting in presentation elements and attributes 
that would be considered "OLD" HTML 4.0 or prior. Our goal, as much as 
is possible, is to keep separate content, structure, presenation and 
logic. We would be defining CSS to provide the presentation. So our 
server side scripting would need clean XHTML output from Composer in 
order to parse in a way the is clean to determine structure from 
presentation.

I hope this makes sense! ;-), John