аппаратно-независимый наборщик roff (device-independent typesetter roff)
Имя (Name)
ditroff - device-independent typesetter roff
Описание (Description)
The name ditroff refers to a historical development stage of the
roff(7) text processing system. In roff systems extant today,
the name troff is a synonym for ditroff.
Early versions of roff by Joe Ossanna generated two programs from
the same sources, using conditional compilation to distinguish
them. nroff produced text-oriented TTY output, while troff
generated graphical output for exactly one output device, the
Wang Graphic Systems CAT phototypesetter.
In 1979, Brian Kernighan rewrote troff to support more devices by
creating an intermediate output format for troff that could be
fed into postprocessor programs which actually do the printout on
the device. Kernighan's version marks what is known as
'classical troff' today. In order to distinguish it from
Ossanna's original version, it was called ditroff (device
independent troff) on some systems, though this naming isn't
mentioned in the classical documentation.
Today, all existing roff systems are based on Kernighan's multi-
device troff. The distinction between troff and ditroff is no
longer necessary; each modern troff provides the complete
functionality of ditroff.
The easiest way to use ditroff is via the GNU roff system, groff.
The groff(1) program is a wrapper around (di)troff that
automatically handles device postprocessing.
Смотри также (See also)
CSTR #54
refers to the 1992 revision of the Nroff/Troff User's
Manual by J. F. Ossanna and Brian Kernighan.
CSTR #97
refers to A Typesetter-independent TROFF, by Brian
Kernighan and is the original documentation of the first
multi-device troff (ditroff).
roff(7)
provides a history and conceptual overview of roff
systems.
troff(1)
describes the GNU implementation of (di)troff.
groff(1)
documents the GNU roff program and includes pointers to
further documentation about groff.
groff_out(5)
describes the groff version of the intermediate output
language, the basis for multi-device output.
