W3C Schema interoperability of tools and support of substitution groups and redefines

Consistent support across a broad selection of tools is, of course, 
critically important to the deployment of any technology.

Here are some interesting excerpts of comments summarized from a workshop 
on W3C Schema technology (the post includes links to the raw minutes from 
which the excerpts are taken):

   http://lists.xml.org/archives/xml-dev/200507/msg00057.html

And here is the start of a thread on the viability and appropriateness of 
substitution groups and redefines in light of how they are supported in tools:

   http://lists.w3.org/Archives/Public/xmlschema-dev/2005Jul/0005

. . . . . . . . Ken

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