Can the CVS instructions become an XML snippet?  And if they do, will the tools
we use "recurse" through the CVS snippet to replace entities therein with
entities derived from the document itself?  In other words, in bad
pseudo-DocBook, if:

mydoc.xml:
<!ENTITY URL "http://somewhere">
<!ENTITY CVSDIRECTIONS "cvs.xml">
Blah blah
&CVSDIRECTIONS;

cvs.xml:
Blah blah
Visit &URL;.

Then do we get this:

Blah blah
Blah blah
Visit http://somewhere.

...?

These changes have more or less become standard with our docs-common/common
entities.  Enhancements can be requested through the "docs-requests" component
of the Fedora Documentation product in Bugzilla.  Closing.