Steven,
This is really just a holding message rather than a reply, but I think
we regarded creating this sort of "extensible container" as "out of
scope" for our activity, initially at least. i.e,. we were focusing on
supporting "lowest common denominator" Simple DC and Qualified DC as
described in the XML Guidelines document.
Having said that, I think we wanted to try to make these schemas useful
building blocks for this sort of extensibility and I'll try to come back
to you on your comments.
Pete
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