> There are a few formats that make sense : html, xhtml,  
> and pdf come to mind initially.

The file format of the result is only part of the specification

http://www.nag.co.uk/numeric/FL/manual/pdf/F08/f08aef.pdf
http://www.nag.co.uk/numeric/CL/nagdoc_cl08/pdf/F08/f08aec.pdf
http://www.nag.co.uk/numeric/MB/manual/pdf/F08/f08ae.pdf

are all pdf, and all generated from the same file, but don't look much
the like each other, documenting Fortran. C and MATLAB interfaces
respectively.

Choice of programming pipelines are I think best left to languages for
that purpose, Make, ant, xproc, shell scripts, ... rather than
complicating the interface in xslt itself trying to tie processing to
namespace declations.

David

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