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Hi, I have the following problem, I want to define an element E that may contain elements A,B,C. Order should be insignificant and A,B and C are all optional. Furthermore, A,B and C may each be replaced by X. The first example was simply like this: <!ELEMENT E ( ( A?, B? ) | ( B?, A? ) | ( A?, X? ) | ( B?, X? ) | ( X?, A? ) | ( X?, B? ) | ( X?, X? ) ) > My XML-editor (XMetal 1.2) reports an ambigous content model error. After carefully studying the appendix of the XML rec, and with some help by the support of XMetaL , I came up with the following: <!ELEMENT E ( EMPTY | (A,(B|X)?) | (B,(A|X)?) | (X,(A|B|X)?) )> Is this the best solution?, What if there are more childs, like A,B,C,D etc. Wouldn't the DTD just explode? Regards Heiko Grussbach xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To unsubscribe, mailto:majordomo@i... the following message; unsubscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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