groff
Software
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groff is a typesetting system that creates formatted output when given plain text mixed with formatting commands. It is the GNU replacement for the troff and nroff text formatters, which were both developed from the original roff. Wikipedia
Initial release: June 1990; 33 years ago
License: 2009: GPL-3.0-or-later; 1992: GPL-2.0-or-later; 1990: GPL-1.0-or-later
Original author(s): James Clark
Stable release: 1.23.0 / 7 July 2023
Written in: C++