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mdoc - quick reference guide for the -mdoc macro package
groff -mdoc files ...
The -mdoc package is a set of content-based and domain-based macros used
to format the BSD man pages. The macro names and their meanings are
listed below for quick reference; for a detailed explanation on using the
package, see the tutorial sampler groff_mdoc(7).
Note that this is not the usual macro package for Linux documentation,
although it is used for documentation of several widely used programs;
The macros are described in two groups, the first includes the structural
and physical page layout macros. The second contains the manual and
general text domain macros which differentiate the -mdoc package from
other troff formatting packages.
PAGE STRUCTURE DOMAIN
To create a valid manual page, these three macros, in this order, are
.Dd Month day, year Document date.
.Dt DOCUMENT_TITLE [section] [volume] Title, in upper case.
.Os OPERATING_SYSTEM [version/release] Operating system (BSD).
Page Layout Macros
Section headers, paragraph breaks, lists and displays.
.Sh Section Headers. Valid headers, in the order of presentation:
NAME Name section, should include the '.Nm' or '.Fn' and
the '.Nd' macros.
DESCRIPTION General description, should include options and
RETURN VALUE Sections two and three function calls.
ENVIRONMENT Describe environment variables.
FILES Files associated with the subject.
EXAMPLES Examples and suggestions.
DIAGNOSTICS Normally used for section four device interface
ERRORS Sections two and three error and signal handling.
SEE ALSO Cross references and citations.
Conformance to standards if applicable.
HISTORY If a standard is not applicable, the history of the
subject should be given.
BUGS Gotchas and caveats.
other Customized headers may be added at the authors
.Ss Subsection Headers.
.Pp Paragraph Break. Vertical space (one line).
.D1 (D-one) Display-one Indent and display one text line.
.Dl (D-ell) Display-one literal. Indent and display one line of
.Bd Begin-display block. Display options:
-ragged Unjustified (ragged edges).
-literal Literal text or code.
-file name Read in named file and display.
-offset string Offset display. Acceptable string values:
left Align block on left (default).
center Approximate center margin.
indent Six constant width spaces (a tab).
indent-two Two tabs.
right Left aligns block 2 inches from right.
xxn Where xx is a number from 4n to 99n.
Aa Where Aa is a callable macro name.
string The width of string is used.
.Ed End-display (matches .Bd).
.Bl Begin-list. Create lists or columns. Options:
-bullet Bullet Item List
-item Unlabeled List
-enum Enumerated List
-tag Tag Labeled List
-diag Diagnostic List
-hang Hanging Labeled List
-ohang Overhanging Labeled List
-inset Inset or Run-on Labeled List
-offset (All lists.) See '.Bd' begin-display above.
-width (-tag and -hang lists only.) See '.Bd'.
-compact (All lists.) Suppresses blank lines.
.It List item.
MANUAL AND GENERAL TEXT DOMAIN MACROS
The manual and general text domain macros are special in that most of
them are parsed for callable macros for example:
.Op Fl s Ar file
Produces [-s file]
In this example, the option enclosure macro '.Op' is parsed, and calls
the callable content macro 'Fl' which operates on the argument 's' and
then calls the callable content macro 'Ar' which operates on the argument
'file'. Some macros may be callable, but are not parsed and vice versa.
These macros are indicated in the parsed and callable columns below.
Unless stated, manual domain macros share a common syntax:
.Va argument [ . , ; : ( ) [ ] argument ... ]
Note: Opening and closing punctuation characters are only recognized as
such if they are presented one at a time. The string '),' is not
recognized as punctuation and will be output with a leading white space
and in what ever font the calling macro uses. The argument list '] ) ,'
is recognized as three sequential closing punctuation characters and a
leading white space is not output between the characters and the previous
argument (if any). The special meaning of a punctuation character may be
escaped with the string '\&'. For example the following string,
.Ar file1 , file2 , file3 ) . Produces file1, file2, file3).
Manual Domain Macros
Name Parsed Callable Description
Ad Yes Yes Address. (This macro may be deprecated.)
An Yes Yes Author name.
Ar Yes Yes Command-line argument.
Cd No No Configuration declaration (section four
Cm Yes Yes Command-line argument modifier.
Dv Yes Yes Defined variable (source code).
Er Yes Yes Error number (source code).
Ev Yes Yes Environment variable.
Fa Yes Yes Function argument.
Fd Yes Yes Function declaration.
Fn Yes Yes Function call (also .Fo and .Fc).
Ic Yes Yes Interactive command.
Li Yes Yes Literal text.
Nm Yes Yes Command name.
Op Yes Yes Option (also .Oo and .Oc).
Ot Yes Yes Old style function type (Fortran only).
Pa Yes Yes Pathname or filename.
St Yes Yes Standards (-p1003.2, -p1003.1 or -ansiC)
Va Yes Yes Variable name.
Vt Yes Yes Variable type (Fortran only).
Xr Yes Yes Manual Page Cross Reference.
General Text Domain Macros
Name Parsed Callable Description
%A Yes No Reference author.
%B Yes Yes Reference book title.
%C No No Reference place of publishing (city).
%D No No Reference date.
%J Yes Yes Reference journal title.
%N No No Reference issue number.
%O No No Reference optional information.
%P No No Reference page number(s).
%R No No Reference report Name.
%T Yes Yes Reference article title.
%V No No Reference volume.
Ac Yes Yes Angle close quote.
Ao Yes Yes Angle open quote.
Ap Yes Yes Apostrophe.
Aq Yes Yes Angle quote.
At No No AT&T UNIX
Bc Yes Yes Bracket close quote.
Bf No No Begin font mode.
Bo Yes Yes Bracket open quote.
Bq Yes Yes Bracket quote.
Bx Yes Yes BSD.
Db No No Debug (default is "off")
Dc Yes Yes Double close quote.
Do Yes Yes Double open quote.
Dq Yes Yes Double quote.
Ec Yes Yes Enclose string close quote.
Ef No No End font mode.
Em Yes Yes Emphasis (traditional English).
Eo Yes Yes Enclose string open quote.
Fx No No FreeBSD operating system
No Yes Yes Normal text (no-op).
Ns Yes Yes No space.
Pc Yes Yes Parenthesis close quote.
Pf Yes No Prefix string.
Po Yes Yes Parenthesis open quote.
Pq Yes Yes Parentheses quote.
Qc Yes Yes Straight Double close quote.
Ql Yes Yes Quoted literal.
Qo Yes Yes Straight Double open quote.
Qq Yes Yes Straight Double quote.
Re No No Reference end.
Rs No No Reference start.
Rv No No Return values (sections two and three
Sc Yes Yes Single close quote.
So Yes Yes Single open quote.
Sq Yes Yes Single quote.
Sm No No Space mode (default is "on")
Sx Yes Yes Section Cross Reference.
Sy Yes Yes Symbolic (traditional English).
Tn Yes Yes Trade or type name (small Caps).
Ux Yes Yes UNIX
Xc Yes Yes Extend argument list close.
Xo Yes Yes Extend argument list open.
Macro names ending in 'q' quote remaining items on the argument list.
Macro names ending in 'o' begin a quote which may span more than one line
of input and are close quoted with the matching macro name ending in 'c'.
Enclosure macros may be nested and are limited to eight arguments.
Note: the extended argument list macros ('.Xo', '.Xc') and the function
enclosure macros ('.Fo', '.Fc') are irregular. The extended list macros
are used when the number of macro arguments would exceed the troff
limitation of nine arguments.
The macros UR (starting a URI/URL hypertext reference), UE (ending one),
and UN (identifying a target for a reference) are also available. See
man(7) for more information on these macros.
doc.tmac Manual and general text domain macros.
tmac/doc-common Common structural macros and definitions.
tmac/doc-nroff Site dependent nroff style file.
tmac/doc-ditroff Site dependent troff style file.
tmac/doc-syms Special defines (such as the standards macro).
groff_mdoc(7), mdoc.samples(7), man(7), man-pages(7)
This page is part of release 3.24 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be
found at http://www.kernel.org/doc/man-pages/.