Content model probs

Paul Prescod paul at
Sun May 16 16:05:25 BST 1999

Leigh Dodds wrote:
> Basically I want to say that a tag should:
> 1. Contain #PCDATA, *OR*
> 2. an optional tag X followed by zero or more occurences of tag Y
> I had thought something like : (#PCDATA|(X?, Y*)
> but that doesn't seem to parse.

This is disallowed in XML for historical reasons. In a recent message
entitled "Mixed content considered harmful" (May 10), I proposed that this
should change in the move to XML Schemas.

 Paul Prescod  - ISOGEN Consulting Engineer speaking for only himself

Earth will soon support only survivor species -- dandelions, roaches, 
lizards, thistles, crows, rats. Not to mention 10 billion humans.
	- Planet of the Weeds, Harper's Magazine, October 1998

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