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   Re: XSchema Spec Section 2.2, Draft 1

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  • From: Paul Prescod <papresco@technologist.com>
  • To: John Cowan <cowan@locke.ccil.org>
  • Date: Thu, 25 Jun 1998 17:36:15 -0400 (EDT)

On Thu, 25 Jun 1998, John Cowan wrote:
> Paul Prescod wrote:
> Treating #PCDATA as an element is problematic because it doesn't have
> delimiters.  Consider models like ((#PCDATA, A) | (#PCDATA, B))
> or (#PCDATA, #PCDATA).

That's no worse than (A|A) and (A*,A). I've not heard any reason to worry 
about ambiguous content models in general. SGML had such a constraint on 
elements but I haven't heard a good defence of the constraint, especially 
in light of the removal of tag minimization.


 Paul Prescod

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