Groff
Groff is the
GNU replacement for the
troff and
nroff text formatters. It was originally written in
C++ by
James Clark, modelling it after
ditroff, but with many extensions. The first version, 0.3.1, was released June
1990. A stable version, 1.04, was declared by November
1991.
Groff contain a large number of helper programs, preprocessors and postprocessor, like eqn, tbl, pic and soelim.
Groff is constantly being developed with new features, and is an important part of free Unix-like operating systems such as Linux and FreeBSD.
External link