Possible TROFF speedup

[jbn at wdl1.UUCP]

     In n3.c of device independent TROFF, there is a CPP variable INCORE
which if defined seems to turn on some I/O optimizations.  But I don't have
the time to trace through the miserable and uncommented code in TROFF to
figure out what is really going on.  But someone with more time might 
find it useful to define INCORE, build TROFF, and see what happens.
Maybe things will speed up.

				John Nagle