They aren??™t editors, but commands through
which you send your text, with the result being formatted pages. The nroff command produces
formatted plain text and includes the capability to do pagination, indents, and text justification, as
well as other features. The troff command produces typeset text, including everything nroff
can do, plus the capability to produce different fonts and spacing. The troff command also supports
kerning, adjusting the spacing between characters in variable-width fonts to look better.
The groff command is the front end for producing nroff/troff documentation. Because Linux man
pages are formatted and output in Groff, most of the examples here help you create and print
man pages with Groff.
People rarely use primitive nroff/troff markup. Instead, there are common macro packages that
simplify creating nroff/troff??“formatted documents, which include:
man??”These macros are used to create Linux man pages. You can format a man page
using the -man option to the groff command.
mm??”The mm macros (memorandum macros) were created to produce memos, letters,
and technical white papers. This package includes macros for creating tables of contents,
lists of figures, references, and other technical-document??“style features.
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