...er from , to COMPATIBILITY This section documents the compatibility of mandoc eqn and the troff eqn implementation (including GNU troff). The text string ‘\"’ is interpreted as …roff language reference for mandoc NAME roff — roff language reference for mandoc DESCRIPTION The roff language is a general purpose text formatting language. Since traditional imp…...PREDEFINED STRINGS Predefined strings are inherited from the macro packages of historical troff implementations. They are not recommended for use, as they differ across implemen…...A Program to Format Tables , June 11, 1976 . HISTORY The tbl utility, a preprocessor for troff, was originally written by M. E. Lesk at Bell Labs in 1975. The GNU reimplementati…...DTD (optional). /usr/share/terminfo The database for terminfo (optional). /usr/share/tmac Troff macros that are not distributed with groff (optional). /usr/share/xml Files for X…semantic markup language for formatting manual pages NAME mdoc — semantic markup language for formatting manual pages DESCRIPTION The mdoc language supports authoring of manual pag…