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   RE: why distinctions within XHTML?

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  • From: Mark Birbeck <Mark.Birbeck@iedigital.net>
  • To: XML-Dev Mailing list <xml-dev@ic.ac.uk>
  • Date: Mon, 30 Aug 1999 17:57:45 +0100

Simon St.Laurent wrote:
> It seems like DOCTYPE and the three DTDs should handle this 
> without any problem.  I can't figure out why you'd want to bring 
> namespaces into this. I could write an editor that recognized the
> namespace and did processing based on the namespace, but I think
> DOCTYPE would be simpler.  I don't think namespaces have to do
> this work.

But what if you wanted to write an editor that left MathML alone, or
passed the MathML parts on to another application or plug-in? You'd need
to use XML Schemas because DTDs couldn't handle that (your XHTML doc has
just failed if it has MathML in it!) and you'll need a namespace for
that (under current proposals). So, if you accept that you need three
DTDs, then to get into the world of XML Schemas (or whatever it ends up
being) you need three namespaces.


Mark Birbeck

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