Query: Sd2Rd and nroff macros in S docs

Documentation for S3 functions is apparently written in troff markup
with macro tags like

  .BG  .FN  .TL  .DN  .CS  ...

Inspection of S3 documentation source files gives a pretty clear idea
of what these mean, semantically (and Sd2Rd is a perl script which
converts this markup into the Rd format, providing further semantic
information along the way).

My query is: Can anyone point to troff macro definitions for these tags?

(And, preferably, also to descriptions for their usage)

With thanks,
Ted.


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E-Mail: (Ted Harding) <Ted.Harding at nessie.mcc.ac.uk>
Fax-to-email: +44 (0)870 167 1972
Date: 18-Jun-03                                       Time: 07:53:36
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