[Groff] groff documentation

[Larry McVoy]

I have the BSD based source to all the troff stuff:

01.begin/  08.mh/        15.vi/        22.memacros/  29.refer/    DONE
02.learn/  09.newsread/  16.ex/        23.meref/     30.invert/   SCCS/
03.shell/  10.etiq/      17.jove/      24.troff/     31.bib/      grap.ps
04.csh/    11.notes/     18.sed/       25.trofftut/  32.diction/  title
05.dc/     12.edtut/     19.awk/       26.eqn/       33.rogue/
06.bc/     13.edadv/     20.msmacros/  27.eqnguide/  34.trek/
07.Mail/   14.edit/      21.msdiffs/   28.tbl/       99.pic/

99.pic is Raymond's rewrite.  

I'm wondering if we could get a project going to transfer the groff 
extensions to this baseline so we could have an up to date version
of the docs written in *roff.  I've always found it weird that groff
docs aren't in roff, seems a bit lame.

I have to dig through my mail to make sure it's legal (I discussed this
with Dennis and Brian and I think got an OK) but I suspect it's fine, 
the date on these is old enough that copyright protection has long 
since expired.

Any interest?
-- 
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Larry McVoy              lm at bitmover.com           
http://www.bitmover.com/lm