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[Chris Maden]

[John Cowan]
> Except for DTD-based validation, which has to stay backward
> compatible.  So either we heave over DTD's altogether, or we apply
> Tim's algorithm (which unquestionably works, but at a price).

If you need namespaces and DTDs, it can be done.  Tim's algorithm is
for the very hard problem of mechanically merging the restrictions of
multiple namespaces.  But if you *need* a DTD, odds are it's because
you have some particular restrictions you need to express.  So express
them!  Namespace-style names don't introduce any new problems here.
They *do* make assembling of semantics (but not restrictions) from
disparate document types possible.

-Chris
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