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 groff_mdoc(7) and the tutorial sampler mdoc.samples(7).
Note that this is not the usual macro package for Linux documentation, although it is used for documentation of several widely used programs; see man(7).
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 required:
.Dd Month day, year
.Dt DOCUMENT_TITLE [section] [volume]
Title, in uppercase.
.Os OPERATING_SYSTEM [version/release]
Operating system (BSD).
Section headers, paragraph breaks, lists and displays.
Section Headers. Valid headers, in the order of presentation:
Name section, should include the ’.Nm’ or ’.Fn’ and the ’.Nd’ macros.
General description, should include options and parameters.
Sections two and three function calls.
Describe environment variables.
Files associated with the subject.
Examples and suggestions.
Normally used for section four device interface diagnostics.
Sections two and three error and signal handling.
Cross references and citations.
Conformance to standards if applicable.
If a standard is not applicable, the history of the subject should be given.
Gotchas and caveats.
Customized headers may be added at the authors discretion.
Paragraph Break. Vertical space (one line).
(D-one) Display-one Indent and display one text line.
(D-ell) Display-one literal. Indent and display one line of literal text.
Begin-display block. Display options:
Unjustified (ragged edges).
Literal text or code.
Read in named file and display.
Offset display. Acceptable string values:
Align block on left (default).
Approximate center margin.
Six constant width spaces (a tab).
Left aligns block 2 inches from right.
Where xx is a number from 4n to 99n.
Where Aa is a callable macro name.
The width of string is used.
End-display (matches .Bd).
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
(All lists.) See ’.Bd’ begin-display above.
(-tag and -hang lists only.) See ’.Bd’.
(All lists.) Suppresses blank lines.
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 recognized as such only 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
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 only).
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
%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 only).
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.
Manual and general text domain macros.
Common structural macros and definitions.
Site dependent nroff style file.
Site dependent troff style file.
Special defines (such as the standards macro).
This page is part of release 4.16 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
Linux July 11, 1999 Linux