5.5. Example: Barebones DocBook

It's time to look at a larger, more complex application. Inspired by DocBook, the technical documentation markup language managed by the OASIS Group (http://www.oasis-open.org/docbook/index.html), we've developed a basic version to play with. For an example of a Barebones DocBook document, refer back to Section 2.9 in Chapter 2.

The DTD in Example 5.3 is marked up with callouts to comments listed at the end of the example.

Example 5.3. Barebones DocBook DTD
<!-- ================================================================== -->
<!--
     Barebones DocBook DTD Version 0.1
     Offered as a teaching tool, without any warranty whatsoever.

     Module dependencies: 
       1. Cals Table (XML) Version 1.0 by Norman Walsh
       2. ISO-8879 character entities

     Contact: Erik Ray <eray@oreilly.com>
-->

<!-- ================================================================== -->
<!--                       ATTRIBUTE GROUPS                             -->
<!--            Common attributes for list declarations.                -->
<!-- ================================================================== -->



<!ENTITY % common.atts "
                               id        ID        #IMPLIED
                               role      CDATA     #IMPLIED
                               xml:space (default | preserve) 'default'
">



<!ENTITY % id.required.atts "
                               id        ID        #REQUIRED
                               renderas  NMTOKEN   #IMPLIED
                               role      CDATA     #IMPLIED
                               xml:space (default | preserve) 'default'
">

 <!-- ================================================================== ...

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