DOCBOOK-APPS: Extending Norm's stylesheets to process <docinfo>

Hi folks,

Before I embark on the path, has anyone produced an extension to Norm's
stylesheets that handle the DocInfo element and children?

Currently we have things like this:

    <para>Contributed by Mark Murray (based on contributions by Mark 
        Dapoz)</para>

scattered at the top of several chapters in our documentation, and I'd like
to formalise the information (and it's presentation) in DocInfo (or the other
*Info elements that appeared in 4.0).

N 
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