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Title: RE: [xml-dev] Inclusion in XML versus SGML
Or if you're using PEs for your content models:
<!ENTITY % common.cm (para)>
<!ENTITY % chapter.cm (title|picture|%common.cm;)*>
<!ELEMENT chapter %chapter.cm;>
Doing it this way is a bit more verbose than SGML but at least you get the advantage of being able to change your "inclusions" in one place.
From: John Cowan [mailto:firstname.lastname@example.org]
Sent: 20 February 2002 18:03
To: Sevigny Benoît
Subject: Re: [xml-dev] Inclusion in XML versus SGML
Sevigny Benoît scripsit:
> In SGML, you can do like thing in your DTD declaration :
> <!ELEMENT book (chapter,section) +(para) >
> This mean that that book contain a chapter and a section. The
> chapter and section is composed by para.
> Now what I want to know, is how in XML I can declare such thing
> (a repeating inclusion).
XML DTDs don't have inclusions, period.
You can either carefully define all your content models to allow
<para> elements at every point (which often isn't that hard), or
you can move to a different schema language.
John Cowan http://www.ccil.org/~cowan email@example.com
To say that Bilbo's breath was taken away is no description at all. There
are no words left to express his staggerment, since Men changed the language
that they learned of elves in the days when all the world was wonderful.
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