[tei-council] XInclude namespace in chapters

[Syd Bauman]

No reason -- we should change them all to 2001, IMHO.

But it does raise the question: what namespace would we use if we
wanted to show XInclude in an <egXML>? (Can't use
http://www.w3.org/2001/XInclude, of course, lest a processor muck up
the example by trying to process the <include> element.)

Currently we don't seem to have any elements with local name
'include' or 'fallback' inside an <teix:egXML>.

> I've been struggling for a while this evening to figure out why I
> couldn't validate the chapter source files; Oxygen was complaining
> that the XInclude element wasn't allowed in e.g. <specGrp>, but I
> have Oxygen set up to do XIncludes before trying to validate. Finally
> I realized that all the XInclude elements in the chapters have this
> namespace:
> 
> http://www.w3.org/2003/XInclude
> 
> whereas the actual XInclude namespace is this:
> 
> http://www.w3.org/2001/XInclude
> 
> (2001, not 2003).
> 
> The 2003 namespace placeholder says:
> 
> "This document describes the namespace
> http://www.w3.org/2003/XInclude. This namespace name is deprecated
> and must not be used. Please use http://www.w3.org/2001/XInclude
> instead. "
> 
> Any reason why I shouldn't change this? It'll make it possible for us
> to validate chapter fragments automatically.