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<book><bookinfo><title>DocBook: The Definitive Guide</title><authorgroup><collab><collabname>Lenny Muellner</collabname></collab><collab><collabname>Norman Walsh</collabname></collab></authorgroup></bookinfo><chapter><title>Just an Example</title><para>
This is just an example, in real life, Lenny and Norm are both
<sgmltag>Author</sgmltag>s.
</para></chapter></book>
