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   Re: <!ELEMENT C (A,A)> allowed?

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  • From: "Eve L. Maler" <Eve.Maler@east.sun.com>
  • To: "Schoedl, Andreas" <Andreas.Schoedl@softwareag.com>
  • Date: Wed, 31 May 2000 11:41:09 -0400

The content model <!ELEMENT C (A,A)> is allowed, as are (A,A,A) and so 
on.  I don't see any need to disallow it; e.g., the following would be useful:


It wouldn't be possible to describe *all* the potential cases of content 
models, and this isn't even a particularly weird one. :-)


At 04:49 PM 5/31/00 +0200, Schoedl, Andreas wrote:
>Hi, all!
>After searching hours and days I finally give up on what appears to be a
>newbie question:
><!ELEMENT C (A,A)>, is such content model allowed? I ask, because I can
>nowhere find the statement that it is forbidden. But I strongly feel that it
>should be!
>Whereas <!ELEMENT C (A?,A)> seems to be excluded (XML REC 3.2.1), alas not
>_very_ explicitly.
>Is there a document where such cases are explained?
>Any help appreciated.
>Kind regards,

Eve Maler                                    +1 781 442 3190
Sun Microsystems XML Technology Center    elm @ east.sun.com

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