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From: "Mark Baker" <firstname.lastname@example.org>
> > Would it make processing and dispatching easier if
> > XML tools did this?
> I don't think so, no.
> Dan Connolly and TimBL wrote up an *excellent* note about this topic
> (and some other related ones);
> Streaming XML is a good example of where this would be a bad idea.
> If a processor hit the stream mid stride, it would have missed the
> namespace declarations. The same issue applies to processing on small
> devices, where the beginning of larger documents may be discarded from
> memory before the document is finished processing.
But since such a streaming XML process would be simularly impeded
from generating the correct MIME information talked about by Simon's
draft, I don't see how this applies. But careful wording should be able
to cover that case.
The best practise would be that "the root element should have declarations
for all the namespaces known to be used in the document." Any namespaces
cannot be known at the document start cannot be included.