To validate or not to validate, that is the question

John Cowan cowan at
Mon Aug 17 16:45:29 BST 1998

Martin Bryan wrote:

> Why does this group seem to feel there is an overpowering need to develop a
> DTD that can be used to validate the compound structure, rather than its
> individual fragments?

I think your model of "compound document" is too simple.  You seem
to model it as a set of self-contained fragments enclosed in a

I expect to see much more complex documents:  a Chemical ML description
of a molecule, with (a) embedded HTML English-language documentation,
which itself contains several inclusions of MathML, and (b) a SMIL
document that marshals a non-XML movie of the molecule.  How would
you validate just the HTML part, given that the HTML DTD does not
understand MathML?

John Cowan		cowan at
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)

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