[Groff] Proper Small Caps.

[Ralph Corderoy]

Hi,

http://2d.laboratorium.net/post/108351875900/small-caps-big-problem
complains about small caps from Word, etc., compared with small caps
designed by the designer.  Thought it might be of interest given troff's
long-time S\s-2MALL\s0 C\s-2APS\s0, especially used in the formatting of
Unix.  IIRC, Dennis Ritchie said they did it because the CAT gave them
the possibility, but it was regretted for the UNIX/Unix confusion it
caused.

Heirloom troff, http://heirloom.sourceforge.net/doctools.html, says

    Mechanisms for typesetting small capitals, old-style numerals, and
    arbitrary ligatures e.g. using Type 1 “expert” or OpenType fonts are
    provided.

Don't know what the other various troff's support for proper small caps
is, e.g. plucking them from the OpenType font?

Cheers, Ralph.