GROFF_TMAC(5)							 GROFF_TMAC(5)

NAME
       groff_tmac - macro files in the roff typesetting system

DESCRIPTION
       The  roff(7) type-setting system provides a set of macro packages suit-
       able for special kinds of documents.  Each  macro  package  stores  its
       macros  and  definitions in a file called the package's tmac file.  The
       name is deduced from `TroffMACros'.

       The tmac files are normal roff source documents, except that they  usu-
       ally  contain  only  definitions	 and setup commands, but no text.  All
       tmac files are kept in a single or a small number of  directories,  the
       tmac directories.

GROFF MACRO PACKAGES
       groff  provides	all classical macro packages, some more full packages,
       and some secondary packages for special purposes.

  Man Pages
       man    This is the  classical  macro  package  for  UNIX	 manual	 pages
	      (man   pages);   it   is	quite  handy  and  easy	 to  use;  see
	      groff_man(7).

       doc
       mdoc   An alternative macro package for man pages mainly	 used  in  BSD
	      systems;	it provides many new features, but it is not the stan-
	      dard for man pages; see groff_mdoc(7).

  Full Packages
       The packages in this section provide a complete set of macros for writ-
       ing  documents  of  any	kind,  up to whole books.  They are similar in
       functionality; it is a matter of taste which one to use.

       me     The classical me macro package; see groff_me(7).

       mm     The semi-classical mm macro package; see groff_mm(7).

       mom    The new mom macro package, only available in groff.  As this  is
	      not  based  on other packages, it can be freely designed.	 So it
	      is expected to become quite a nice, modern macro	package.   See
	      groff_mom(7).

       ms     The classical ms macro package; see groff_ms(7).

  Special Packages
       The  macro  packages  in	 this section are not intended for stand-alone
       usage, but can be used to add special functionality to any other	 macro
       package or to plain groff.

       tty-char
	      Overrides	 the  definition of standard troff characters and some
	      groff characters for tty devices.	  The  optical	appearance  is
	      intentionally inferior compared to that of normal tty formatting
	      to allow processing with critical equipment.

       www    Additions of elements known from the html format, as being  used
	      in  the internet (World Wide Web) pages; this includes URL links
	      and mail addresses; see groff_www(7).

NAMING
       In classical roff systems, there was a funny naming  scheme  for	 macro
       packages, due to a simplistic design in option parsing.	Macro packages
       were always included by option -m; when this option was	directly  fol-
       lowed  by its argument without an intervening space, this looked like a
       long option preceded by a single minus