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- From: John Cowan <cowan@locke.ccil.org>
- To: xml-dev@ic.ac.uk
- Date: Thu, 22 Apr 1999 23:06:20 -0400 (EDT)
roddey@us.ibm.com scripsit:
> I just now, for whatever reason, got around to noticing that the James
> Clark 'valid' tests imply that you can reference an element in a content
> model without its ever having been declared, for instance:
[snippage]
> What am I missing here?
Extensibility.
By allowing unknown element types in content models, we allow
documents to define such element types according to their needs,
using either the internal subset or a containing external DTD,
and then they will "just work" as content of the existing elements.
--
John Cowan cowan@ccil.org
e'osai ko sarji la lojban.
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