XDB 0.3 available (XMLized Docbook 3.0)

Terry Allen tallen at sonic.net
Sun May 4 02:18:37 BST 1997

Now available at


is a DTD derived from DocBook 3.0 that I believe is valid XML.  Thanks
to Norbert Mikula for pointing out that the %local.foo.foo; parameter
entities, which are defined with the content "", are illegal per
XML-lang production 46.  The sole difference between XDB 0.3 and
XDB 0.2 (which I've removed) is the deletion of these parameter
entities and an updated copyright notice.

This change blows away the DocBook customization mechanism.  The
purpose of distributing this DTD is solely to determine what 
constitutes a valid XML DTD.  Obviously some other method of
customization will be required (unless the SGML ERB can be
persuaded to relax its strictures on empty parameter entities).
The quick hack that comes to mind is to define these pe's as
containing a placeholder element ZZZZZ, which would be declared


without an ATTLIST.  As I remarked earlier, I'd be happy to
hear of other solutions.  As the DTD is fairly useless without
the customization mechanism, this version cannot be considered
progress on the road to a proper XMLlated DocBook that the
Davenport Group would want to distribute.  Mea culpa.


  Terry Allen    Electronic Publishing Consultant    tallen[at]sonic.net
    Davenport and DocBook:  http://www.ora.com/davenport/index.html
          T.A. at Passage Systems:  terry.allen[at]passage.com 

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