GROFF_TMAC(5) File Formats Manual GROFF_TMAC(5)
groff_tmac - macro files in the roff typesetting system
The roff(7) type-setting system provides a set of macro packages suitable 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 usually 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. Note that it is
not possible to use multiple primary macro packages at the same time; saying e.g.
sh# groff -m man -m ms foo
sh# groff -m man foo -m ms bar
fails. Exception to this is the use of man pages written with either the mdoc or the man macro package. See below the description of the
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).
mdoc An alternative macro package for man pages mainly used in BSD systems; it provides many new features, but it is not the standard for
man pages; see groff_mdoc(7).
mandoc Use this file in case you don't know whether the man macros or the mdoc package should be used. Multiple man pages (in either for-
mat) can be handled.
The packages in this section provide a complete set of macros for writing 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).
cs This file adds support for Czech localization, including the main macro packages (me, mom, mm, and ms).
Note that cs.tmac sets the input encoding to latin-2.
den German localization support, including the main macro packages (me, mom, mm, and ms).
de.tmac selects hyphenation patterns for traditional orthography, and den.tmac does the same for the new orthography (`Rechtschreib-
reform'). It should be used as the last macro package on the command line.
fr This file adds support for French localization, including the main macro packages (me, mom, mm, and ms). Example:
sh# groff -ms -mfr foo.ms > foo.ps
Note that fr.tmac sets the input encoding to latin-9 to get proper support of the `oe' ligature.
sv Swedish localization support, including the me, mom, and ms macro packages. Note that Swedish for the mm macros is handled sepa-
rately; see groff_mmse(7). It should be used as the last macro package on the command line.
latin9 Various input encodings supported directly by groff. Normally, this macro is loaded at the very beginning of a document or speci-
fied as the first macro argument on the command line. roff loads latin1 by default at start-up. Note that these macro packages
don't work on EBCDIC hosts.
cp1047 Encoding support for EBCDIC. On those platforms it is loaded automatically at start-up. Due to different character ranges used in
roff it doesn't work on architectures which are based on ASCII.
Note that it can happen that some input encoding characters are not available for a particular output device. For example, saying
groff -Tlatin1 -mlatin9 ...
fails if you use the Euro character in the input. Usually, this limitation is present only for devices which have a limited set of output
glyphs (-Tascii, -Tlatin1); for other devices it is usually sufficient to install proper fonts which contain the necessary glyphs.
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.
60bit Provide some macros for addition, multiplication, and division of 60bit integers (allowing safe multiplication of 30bit integers,
ec Switch to the EC and TC font families. To be used with grodvi(1) - this man page also gives more details of how to use it.
This macro file is already loaded at start-up by troff so it isn't necessary to call it explicitly. It provides an interface to set
the paper size on the command line with the option -dpaper=size. Possible values for size are the same as the predefined papersize
values in the DESC file (only lowercase; see groff_font(5) for more) except a7-d7. An appended l (ell) character denotes landscape
orientation. Examples: a4, c3l, letterl.
Most output drivers need additional command line switches -p and -l to override the default paper length and orientation as set in
the driver specific DESC file. For example, use the following for PS output on A4 paper in landscape orientation:
sh# groff -Tps -dpaper=a4l -P-pa4 -P-l -ms foo.ms > foo.ps
pic This file provides proper definitions for the macros PS and PE, needed for the pic(1) preprocessor. They center each picture. Use
it only if your macro package doesn't provide proper definitions for those two macros (actually, most of them already do).
pspic A single macro is provided in this file, PSPIC, to include a PostScript graphic in a document. The following output devices support
inclusion of PS images: -Tps, -Tdvi, -Thtml, and -Txhtml; for all other devices the image is replaced with a hollow rectangle of the
same size. This macro file is already loaded at start-up by troff so it isn't necessary to call it explicitly.
.PSPIC [-L|-R|-C|-I n] file [width [height]]
file is the name of the PostScript file; width and height give the desired width and height of the image. If neither a width nor a
height argument is specified, the image's natural width (as given in the file's bounding box) or the current line length is used as
the width, whatever is smaller. The width and height arguments may have scaling indicators attached; the default scaling indicator
is i. This macro scales the graphic uniformly in the x and y directions so that it is no more than width wide and height high.
Option -C centers the graphic horizontally, which is the default. The -L and -R options cause the graphic to be left-aligned and
right-aligned, respectively. The -I option causes the graphic to be indented by n (default scaling indicator is m).
For use of .PSPIC within a diversion it is recommended to extend it with the following code, assuring that the diversion's width
completely covers the image's width.
. vpt 0
h'(\n[ps-offset]u + \n[ps-deswid]u)'
. sp -1
. vpt 1
ptx A single macro is provided in this file, xx, for formatting permuted index entries as produces by the GNU ptx(1) program. In case
you need a different formatting, copy the macro into your document and adapt it to your needs.
trace Use this for tracing macro calls. It is only useful for debugging. See groff_trace(7).
Overrides the definition of standard troff characters and some groff characters for TTY devices. The optical appearance is inten-
tionally inferior compared to that of normal TTY formatting to allow processing with critical equipment.
www Additions of elements known from the HTML format, as used in the internet (World Wide Web) pages; this includes URL links and mail
addresses; see groff_www(7).
Classical roff systems were designed before the conventions of the modern C getopt(3) call evolved, and used a naming scheme for macro
packages that looks odd to modern eyes. Macro packages were always included with the option -m; when this option was directly followed by
its argument without an intervening space, this looked like a long option preceded by a single minus -- a sensation in the computer stone
age. To make this invocation form work, classical troff macro packages used names that started with the letter `m', which was omitted in
the naming of the macro file.
For example, the macro package for the man pages was called man, while its macro file tmac.an. So it could be activated by the argument an
to option -m, or -man for short.
For similar reasons, macro packages that did not start with an `m' had a leading `m' added in the documentation and in speech; for example,
the package corresponding to tmac.doc was called mdoc in the documentation, although a more suitable name would be doc. For, when omitting
the space between the option and its argument, the command line option for activating this package reads -mdoc.
To cope with all situations, actual versions of groff(1) are smart about both naming schemes by providing two macro files for the inflicted
macro packages; one with a leading `m' the other one without it. So in groff, the man macro package may be specified as on of the follow-
ing four methods:
sh# groff -m man
sh# groff -man
sh# groff -mman
sh# groff -m an
Recent packages that do not start with `m' do not use an additional `m' in the documentation. For example, the www macro package may be
specified only as one of the two methods:
sh# groff -m www
sh# groff -mwww
Obviously, variants like -mmwww would not make much sense.
A second strange feature of classical troff was to name macro files in the form tmac.name. In modern operating systems, the type of a file
is specified as a postfix, the file name extension. Again, groff copes with this situation by searching both anything.tmac and tmac.any-
thing if only anything is specified.
The easiest way to find out which macro packages are available on a system is to check the man page groff(1), or the contents of the tmac
In groff, most macro packages are described in man pages called groff_name(7), with a leading `m' for the classical packages.
There are several ways to use a macro package in a document. The classical way is to specify the troff/groff option -m name at run-time;
this makes the contents of the macro package name available. In groff, the file name.tmac is searched within the tmac path; if not found,
tmac.name is searched for instead.
Alternatively, it is also possible to include a macro file by adding the request .so filename into the document; the argument must be the
full file name of an existing file, possibly with the directory where it is kept. In groff, this was improved by the similar request .mso
package, which added searching in the tmac path, just like option -m does.
Note that in order to resolve the .so and .mso requests, the roff preprocessor soelim(1) must be called if the files to be included need
preprocessing. This can be done either directly by a pipeline on the command line or by using the troff/groff option -s. man calls soelim
For example, suppose a macro file is stored as
and is used in some document called docu.roff.
At run-time, the formatter call for this is
sh# groff -m macros docu.roff
To include the macro file directly in the document either
is used or
In both cases, the formatter should be called with option -s to invoke soelim.
sh# groff -s docu.roff
If you want to write your own groff macro file, call it whatever.tmac and put it in some directory of the tmac path, see section FILES.
Then documents can include it with the .mso request or the option -m.
A roff(7) document is a text file that is enriched by predefined formatting constructs, such as requests, escape sequences, strings,
numeric registers, and macros from a macro package. These elements are described in roff(7).
To give a document a personal style, it is most useful to extend the existing elements by defining some macros for repeating tasks; the
best place for this is near the beginning of the document or in a separate file.
Macros without arguments are just like strings. But the full power of macros reveals when arguments are passed with a macro call. Within
the macro definition, the arguments are available as the escape sequences $1, ..., $9, $[...], $*, and $@, the name under which the
macro was called is in $0, and the number of arguments is in register
[.$]; see groff(7).
The phase when groff reads a macro is called copy-in mode or copy mode in roff-talk. This is comparable to the C preprocessing phase dur-
ing the development of a program written in the C language.
In this phase, groff interprets all backslashes; that means that all escape sequences in the macro body are interpreted and replaced by
their value. For constant expressions, this is wanted, but strings and registers that might change between calls of the macro must be pro-
tected from being evaluated. This is most easily done by doubling the backslash that introduces the escape sequence. This doubling is
most important for the positional parameters. For example, to print information on the arguments that were passed to the macro to the ter-
minal, define a macro named `.print_args', say.
.ds midpart was called with
. tm f[I]\$0f *[midpart] \n[.$] arguments:
. tm \$*
When calling this macro by
.print_args arg1 arg2
the following text is printed to the terminal:
print_args was called with the following 2 arguments:
Let's analyze each backslash in the macro definition. As the positional parameters and the number of arguments change with each call of
the macro their leading backslash must be doubled, which results in \$* and \[.$]. The same applies to the macro name because it could
be called with an alias name, so \$0.
On the other hand, midpart is a constant string, it does not change, so no doubling for *[midpart]. The f escape sequences are prede-
fined groff elements for setting the font within the text. Of course, this behavior does not change, so no doubling with f[I] and f.
Writing groff macros is easy when the escaping mechanism is temporarily disabled. In groff, this is done by enclosing the macro defini-
tion(s) into a pair of .eo and .ec requests. Then the body in the macro definition is just like a normal part of the document -- text
enhanced by calls of requests, macros, strings, registers, etc. For example, the code above can be written in a simpler way by
.ds midpart was called with
. tm f[I]$0f *[midpart]
. tm $*
Unfortunately, draft mode cannot be used universally. Although it is good enough for defining normal macros, draft mode fails with
advanced applications, such as indirectly defined strings, registers, etc. An optimal way is to define and test all macros in draft mode
and then do the backslash doubling as a final step; do not forget to remove the .eo request.
Tips for Macro Definitions
o Start every line with a dot, for example, by using the groff request .nop for text lines, or write your own macro that handles also
text lines with a leading dot.
. if (\n[.$] == 0)
. nop )\$*)
o Write a comment macro that works both for copy-in and draft mode; for as escaping is off in draft mode, trouble might occur when
normal comments are used. For example, the following macro just ignores its arguments, so it acts like a comment line:
.c This is like a comment line.
o In long macro definitions, make ample use of comment lines or almost-empty lines (this is, lines which have a leading dot and noth-
ing else) for a better structuring.
o To increase readability, use groff's indentation facility for requests and macro calls (arbitrary whitespace after the leading dot).
Diversions can be used to implement quite advanced programming constructs. They are comparable to pointers to large data structures in the
C programming language, but their usage is quite different.
In their simplest form, diversions are multi-line strings, but they get their power when diversions are used dynamically within macros.
The (formatted) information stored in a diversion can be retrieved by calling the diversion just like a macro.
Most of the problems arising with diversions can be avoided if you remain aware of the fact that diversions always store complete lines.
If diversions are used when the line buffer has not been flushed, strange results are produced; not knowing this, many people get desperate
about diversions. To ensure that a diversion works, line breaks should be added at the right places. To be on the secure side, enclose
everything that has to do with diversions into a pair of line breaks; for example, by explicitly using .br requests. This rule should be
applied to diversion definition, both inside and outside, and to all calls of diversions. This is a bit of overkill, but it works nicely.
[If you really need diversions which should ignore the current partial line, use environments to save the current partial line and/or use
the .box request.]
The most powerful feature using diversions is to start a diversion within a macro definition and end it within another macro. Then every-
thing between each call of this macro pair is stored within the diversion and can be manipulated from within the macros.
All macro names must be named name.tmac to fully use the tmac mechanism. tmac.name as with classical packages is possible as well, but
The macro files are kept in the tmac directories; a colon separated list of these constitutes the tmac path.
The search sequence for macro files is (in that order):
o the directories specified with troff/groff's -M command line option
o the directories given in the $GROFF_TMAC_PATH environment variable
o the current directory (only if in unsafe mode, which is enabled by the -U command line switch)
o the home directory
o a platform-specific directory, being
in this installation
o a site-specific (platform-independent) directory, being
in this installation
o the main tmac directory, being
in this installation
A colon separated list of additional tmac directories in which to search for macro files. See the previous section for a detailed
Copyright (C) 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
This document is distributed under the terms of the FDL (GNU Free Documentation License) version 1.3 or later. You should have received a
copy of the FDL on your system, it is also available on-line at the GNU copyleft site <http://www.gnu.org/copyleft/fdl.html>.
This document is part of groff, the GNU roff distribution. It was written by Bernd Warken <email@example.com>; it is maintained by Werner
A complete reference for all parts of the groff system is found in the groff info(1) file.
an overview of the groff system.
the groff tmac macro packages.
the groff language.
The Filesystem Hierarchy Standard is available at the FHS web site <http://www.pathname.com/fhs/>.
Groff Version 1.21 25 June 2012 GROFF_TMAC(5)