general external entity reference from a DTD to another one?

John Cowan cowan at
Wed Jul 14 21:38:27 BST 1999

Giorgos Kaltekis scripsit:

> can I use a reference to a general external entity within a DTD to refer =
> to another DTD?

No.  But you can use a parameter entity instead.

> For example if I declare
> <!ENTITY Chapter1 SYSTEM "chapter1.dtd">

<!ENTITY % Chapter1-dtd SYSTEM "chapter1.dtd">

> can I use the following within a DTD for book, let's say book.dtd :
> <!ELEMENT CHAPTER1 ("&Chapter1;")>

<!ELEMENT CHAPTER1 ("%Chapter1-dtd;")>
> so that I give the CHAPTER1 element the structure described in =
> chapter1.dtd?

John Cowan                                   cowan at
       I am a member of a civilization. --David Brin

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