XSchema Spec - Content Model Declarations (Section 2.3), Draft 4

[John Cowan]

Ron Bourret wrote:

> One can imagine an XSchema where the top-level element declarations themselves
> are relatively useless but exist so that an XLink can refer to their content
> models.  This is a bit hacky, but it's the only way I can see to duplicate the
> horiz.model and vert.model entities in John Cowan's Itsy B
> Bitsy Teeny Weeny Simple Hypertext DTD.

Very kludgy indeed.

I have one new proposal and one old one.  I'm thinking that several more
elements should be allowed at top level, namely AttDef, Choice, Sequence,
Mixed, NotationType, and EnumerationType.  These would then exist
as free-floating resources which could be referred to by idrefs
elsewhere.

The old proposal is for an AttGroup element, with a content model
of (Doc?, AttDef+), and available at top level and also within an Element
model.  This would allow multiple attributes to be treated as a
single thing for either documentation or reference.

-- 
John Cowan	http://www.ccil.org/~cowan		cowan at ccil.org
	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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