troff

/Trof/ , /trof/ , n. [Unix] The gray eminence of Unix text processing; a
formatting and phototypesetting program, written originally in PDP-11
assembler and then in barely-structured early C by the late Joseph Ossanna,
modeled after the earlier ROFF which was in turn modeled after the Multics
and CTSS program RUNOFF by Jerome Saltzer ( that name came from the
expression to run off a copy ). A companion program, nroff , formats output
for terminals and line printers. In 1979, Brian Kernighan modified troff so
that it could drive phototypesetters other than the Graphic Systems CAT. His
paper describing that work (A Typesetter-independent troff, AT&T CSTR #97)
explains troff's durability. After discussing the program's obvious
deficiencies a rebarbative input syntax, mysterious and undocumented
properties in some areas, and a voracious appetite for computer resources
and noting the ugliness and extreme hairiness of the code and internals,
Kernighan concludes: None of these remarks should be taken as denigrating
Ossanna's accomplishment with TROFF. It has proven a remarkably robust tool,
taking unbelievable abuse from a variety of preprocessors and being forced
into uses that were never conceived of in the original design, all with
considerable grace under fire. The success of TeX and desktop publishing
systems have reduced troff 's relative importance, but this tribute
perfectly captures the strengths that secured troff a place in hacker
folklore; indeed, it could be taken more generally as an indication of those
qualities of good programs that, in the long run, hackers most admire.