Customizing xrefstyle globally

["John W. Shipman" <john@nmt.edu>]

I've just finished carefully reading the chapter in Stayton's
book on `Cross-references,' but there's one thing I can't figure
out how to do.

When in my FO customization layer I set insert.xref.page.number
to 1, I get the default style of page number cross-references,
namely, the page number in square brackets, e.g., "[12]".

What I'd prefer is that such page numbers occur in the
xrefstyle="select: title pageabbrev" style, e.g., "(p. 12)".

Since I'm using the 1.65.1 stylesheets but the DTD is only
DocBook 4.2, I could achieve this by adding this attribute to
every <xref> element:

    <xref role='select: title pageabbrev'/>

However, I'd prefer to have this style of page number reference
be the default in my customization layer, so I don't have to add
this attribute in a zillion places.

I spent some time grepping around the stylesheets, but I couldn't
figure out where the templates connect with the gentext templates
for "pageabbrev".

Any suggestions?

Best regards,
John Shipman (john@nmt.edu), Applications Specialist, NM Tech Computer Center,
Speare 128, Socorro, NM 87801, (505) 835-5950, http://www.nmt.edu/~john
  ``Let's go outside and commiserate with nature.''  --Dave Farber