.\" Copyright (c) 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" %sccs.include.redist.roff%
.\"
.\"	@(#)mdoc.7	1.2 (Berkeley) %G%
.\"
.Dd 
.Os
.Dt MDOC 7
.Sh NAME
.Nm mdoc
.Nd Quick reference guide for the
.Nm \-mdoc
macro package
.Sh SYNOPSIS
.Nm groff
.Fl m Ns Ar doc
.Ar files ...
.Sh DESCRIPTION
The
.Nm \-mdoc
package is a set of manual page domain content-based macros
used to format the
.Bx
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
.Xr mdoc.samples 7 .
.Pp
The macros are described in three domain groups, the first
domain includes the structural and the physical page layout macros.
The second group contains the manual domain
content macros which differentiate the
.Nm -\mdoc
package from other
.Xr troff
formatting packages.
The manual page domain specific content macros
are a subset of the day to day language
used to describe
.Bx
commands, functions, devices and files.
The third group consists of general text
domain macros which apply to other types of documentation
as well as manual pages.
.Sh PAGE STRUCTURAL DOMAIN
.Ss Title Macros
To create a valid manual page, these three macros
required in the order they are presented:
.Bl -tag -width ".Os OPERATING_SYSTEM [version/release]" -compact
.It Sy \&.Dd Ar "Month day, year"
Document date.
.It Sy \&.Dt Ar "DOCUMENT_TITLE [section] [volume]"
Title, in upper case.
.It Sy \&.Os Ar "OPERATING_SYSTEM [version/release]"
Operating system
.Pq Tn BSD .
.El
.Ss Page Layout Macros
Section eaders, paragraph breaks, lists and displays.
.Bl -tag -width flag -compact
.It Sy \&.Sh Ar HEADER
Section Header Macro.
Valid headers, in the order of presentation:
.Bl -tag -width "RETURN VALUES" -compact
.It Ar NAME
Name section, should include the
.Ql \&.Nm
or
.Ql \&.Fn
and the
.Ql \&.Nd
macros.
.It Ar SYNOPSIS
Usage.
.It Ar DESCRIPTION
General description, should include
options and parameters.
.It Ar RETURN VALUES
Sections two and three function calls.
.It Ar ENVIRONMENT
Describe environment variables.
.It Ar FILES
Files associated with the subject.
.It Ar EXAMPLES
Examples and suggestions.
.It Ar DIAGNOSTICS
Normally used for section four device interface diagnostics.
.It Ar ERRORS
Sections two and three error and signal
handling.
.It Ar SEE ALSO
Cross references and citations.
.It Ar STANDARDS
Conformance to standards if applicable.
.It Ar HISTORY
If a standard is not applicable, the history
of the subject should be given.
.It Ar BUGS
Gotchas and caveats.
.It Ar other
Customized headers may be added at
the authors discretion.
.El
.It Sy \&.Ss
Subsection Headers.
.It Sy \&.Pp
Paragraph Break.
Vertical space (one line).
.It Sy \&.D1
(D-one) Display-one
Indent and display one text line.
.It Sy \&.Dl
(D-ell) Display-one literal.
Indent and display one line of literal text.
.It Sy \&.Bd
Begin-display of text across one or more lines.
Requires the end-display macro
.Ql \&.Ed .
.Pp
Display options:
.Bl -tag -width "xoffset string" -compact
.It Fl ragged
Unjustified (ragged edges).
.It Fl filled
Justified.
.It Fl literal
Literal text or code.
.It Fl file Ar name
Read in named
.Ar file
and display.
.It Fl offset Ar string
Offset (indent) display by the
width of
.Ar string
(or value of register name).
Known values:
.Pp
.Bl -tag -width indent-two -compact
.It Ar left
Align block on current left margin (default).
.It Ar center
Approximate center margin.
.It Ar indent
Six constant width spaces (a tab).
.It Ar indent-two
Twelve constant width spaces (two tabs).
.It Ar right
Left aligns block about 2 inches from
right side of page.
.El
.El
.It Sy \&.Ed
End-display (matches \&.Bd).
.It Sy \&.Bl
Begin-list.
Create lists or columns.
.Pp
.Bl -tag -width flag -compact
.It Ar List-types
.Bl -column xbullet -compact
.It Fl bullet Ta "Bullet Item List"
.It Fl item Ta "Unlabled List"
.It Fl enum Ta "Enumerated List"
.It Fl tag Ta "Tag Labeled List"
.It Fl diag Ta "Diagnostic List"
.It Fl hang Ta "Hanging Labeled List"
.It Fl ohang Ta "Overhanging Labeled List"
.It Fl inset Ta "Inset or Run-on Labeled List"
.El
.It List-parameters
.Bl -tag -width xcompact -compact
.It Fl offset Ar indent
(All lists.)
Offset or indent by
.Ar indent .
The
.Ar indent
may be expressed as a scaled number
(12n), a string, a register name or
the string
.Li indent
which represents a tab.
.It Fl width Ar string
.Pf ( Fl tag
and
.Fl hang
lists only.)
The label width is set to the constant width of
.Ar string .
The
.Fl width
option may be a scaled number
(20n), a string,
a register name or the
string
.Li indent
which represents a tab.
.It Fl compact
(All lists.)
Suppresses the insertion of a blank line at the beginning
of a display and in between each item.
.It Sy \&.El
End-list.
.It Sy \&.It
List item.
.El
.El
.Sh 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:
.Bd -literal -offset indent
\&.Op Fl s Ar file
.Ed
.Pp
In this example, the option enclosure macro
.Ql \&.Op
is parsed, and calls the callable content macro
.Ql \&Fl
which operates on the argument
.Ql s
and then calls the callable content macro
.Ql \&Ar
which operates on the argument
.Ql file .
The result is:
.Pp
.Dl Op Fl s Ar file
.Pp
Some macros may be callable, but are not parsed and vice versa.
These macros are indicated in the
.Em parsed
and
.Em callable columns below.
.Pp
Unless stated, manual page domain macros share a common syntax:
.Pp
.Dl \&.Va argument [\ .\ ,\ ;\ :\ (\ )\ [\ ]\ argument \...\ ]
.Pp
Macros may be given up to nine arguments.
.Sy Note :
Opening and closing
punctuation characters are only recognized as such if they are presented
one at a time.
The string
.Ql "),"
is not recognized as punctuation and will be output with a leading white
space and in what ever font the calling macro uses.
The
the argument list
.Ql "] ) ,"
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
.Ql \e& .
For example the following string,
.Pp
.Dl \&.Ar file1\ , file2\ , file3\ )\ .
.Pp
Produces
.Pp
.D1 .Ar file1 , file2 , file3 ) .
.Ss Manual Domain Macros
.Bl -column "Name" "Parsed" Callable"
.It Em Name	Parsed	Callable	Description
.It Sy \&Ad Ta Yes Ta Yes Ta Address. "(This macro may be deprecated.)"
.It Sy \&Ar Ta Yes Ta Yes Ta "Command line argument."
.It Sy \&Cd Ta \&No Ta \&No Ta "Configuration declaration (section four only)."
.It Sy \&Cm Ta Yes Ta Yes Ta "Command line argument modifier."
.It Sy \&Dv Ta Yes Ta Yes Ta "Defined variable (source code)."
.It Sy \&Er Ta Yes Ta Yes Ta "Error number (source code)."
.It Sy \&Ev Ta Yes Ta Yes Ta "Environment variable."
.It Sy \&Fa Ta Yes Ta Yes Ta "Function argument."
.It Sy \&Fd Ta Yes Ta Yes Ta "Function declaration."
.It Sy \&Fn Ta Yes Ta Yes Ta "Function call (also .Fo and .Fc)."
.It Sy \&Ic Ta Yes Ta Yes Ta "Interactive command."
.It Sy \&Li Ta Yes Ta Yes Ta "Literal text."
.It Sy \&Nm Ta Yes Ta Yes Ta "Command name."
.It Sy \&Op Ta Yes Ta Yes Ta "Option (also .Oo and .Oc)."
.It Sy \&Ot Ta Yes Ta Yes Ta "Old style function type (Fortran only)."
.It Sy \&Pa Ta Yes Ta Yes Ta "Pathname or file name."
.It Sy \&St Ta Yes Ta Yes Ta "Standards (-p1003.2, -p1003.1 or -ansiC)"
.It Sy \&Va Ta Yes Ta Yes Ta "Variable name."
.It Sy \&Vt Ta Yes Ta Yes Ta "Variable type (Fortran only)."
.It Sy \&Xr Ta Yes Ta Yes Ta "Manual Page Cross Reference."
.El
.Ss General Text Domain Macros
.Bl -column "Name" "Parsed" Callable"
.It Em "Name	Parsed	Callable	Description"
.It Sy \&%A Ta Yes Ta \&No Ta "Reference author."
.It Sy \&%B Ta Yes Ta Yes Ta "Reference book title."
.It Sy \&%\&C Ta \&No Ta \&No Ta "Reference place of publishing (city)."
.It Sy \&%\&D Ta \&No Ta \&No Ta "Reference date."
.It Sy \&%J Ta Yes Ta Yes Ta "Reference journal title."
.It Sy \&%N Ta \&No Ta \&No Ta "Reference issue number."
.It Sy \&%\&O Ta \&No Ta \&No Ta "Reference optional information."
.It Sy \&%P Ta \&No Ta \&No Ta "Reference page number(s)."
.It Sy \&%R Ta \&No Ta \&No Ta "Reference report Name."
.It Sy \&%T Ta Yes Ta Yes Ta "Reference article title."
.It Sy \&%V Ta \&No Ta \&No Ta "Reference volume."
.It Sy \&Ac Ta Yes Ta Yes Ta "Angle close quote."
.It Sy \&Ao Ta Yes Ta Yes Ta "Angle open quote."
.It Sy \&Aq Ta Yes Ta Yes Ta "Angle quote."
.It Sy \&At Ta \&No Ta \&No Ta Tn "AT&T UNIX"
.It Sy \&Bc Ta Yes Ta Yes Ta "Bracket close quote."
.It Sy \&Bf Ta \&No Ta \&No Ta "Begin font mode."
.It Sy \&Bo Ta Yes Ta Yes Ta "Bracket open quote."
.It Sy \&Bq Ta Yes Ta Yes Ta "Bracket quote."
.It Sy \&Bx Ta Yes Ta Yes Ta Bx .
.It Sy \&Db Ta \&No Ta \&No Ta "Debug (default is off)"
.It Sy \&Dc Ta Yes Ta Yes Ta "Double close quote."
.It Sy \&Do Ta Yes Ta Yes Ta "Double open quote."
.It Sy \&Dq Ta Yes Ta Yes Ta "Double quote."
.It Sy \&Ec Ta Yes Ta Yes Ta "Enclose string close quote."
.It Sy \&Ef Ta \&No Ta \&No Ta "End font mode."
.It Sy \&Em Ta Yes Ta Yes Ta "Emphasis (traditional English)."
.It Sy \&Eo Ta Yes Ta Yes Ta "Enclose string open quote."
.It Sy \&No Ta Yes Ta Yes Ta "Normal text (no-op)."
.It Sy \&Ns Ta Yes Ta Yes Ta "No space."
.It Sy \&Pc Ta Yes Ta Yes Ta "Parenthesis close quote."
.It Sy \&Pf Ta Yes Ta \&No Ta "Prefix string."
.It Sy \&Po Ta Yes Ta Yes Ta "Parenthesis open quote."
.It Sy \&Pq Ta Yes Ta Yes Ta "Parentheses quote."
.It Sy \&Qc Ta Yes Ta Yes Ta "Strait Double close quote."
.It Sy \&Ql Ta Yes Ta Yes Ta "Quoted literal."
.It Sy \&Qo Ta Yes Ta Yes Ta "Strait Double open quote."
.It Sy \&Qq Ta Yes Ta Yes Ta "Strait Double quote."
.It Sy \&Re Ta \&No Ta \&No Ta "Reference start."
.It Sy \&Rs Ta \&No Ta \&No Ta "Reference start."
.It Sy \&Sc Ta Yes Ta Yes Ta "Single close quote."
.It Sy \&So Ta Yes Ta Yes Ta "Single open quote."
.It Sy \&Sq Ta Yes Ta Yes Ta "Single quote."
.It Sy \&Sm Ta \&No Ta \&No Ta "Space mode (default is \\*qon\\*q)"
.It Sy \&Sx Ta Yes Ta Yes Ta "Section Cross Reference."
.It Sy \&Sy Ta Yes Ta Yes Ta "Symbolic (traditional English)."
.It Sy \&Tn Ta Yes Ta Yes Ta "Trade or type name (small Caps)."
.It Sy \&Ux Ta Yes Ta Yes Ta Ux
.It Sy \&Xc Ta Yes Ta Yes Ta "Extend argument list close."
.It Sy \&Xo Ta Yes Ta Yes Ta "Extend argument list close."
.El
.\" .It Sy \&Hf Ta \&No Ta \&No Ta "Include file with header"
.Pp
Macro names ending in
.Ql q
quote remaining items on the argument list.
Macro names ending in
.Ql o
begin a quote which may span more than one line of input and
are close quoted with the matching macro name ending in
.Ql c .
Enclosure macros may be nested.
.Pp
Note: the extended argument list macros
.Pf ( Ql \&.Xo ,
.Ql \&.Xc )
and the function enclosure macros
.Pf ( Ql \&.Fo ,
.Ql \&.Fc )
are irregular.
The extended list macros are used when the number of macro arguments
would exceed the
.Xr troff
limitation of nine arguments.
.Sh CONFIGURATION
For site specific configuration of the macro package,
see the file
.Pa /usr/src/share/tmac/README .
.Sh FILES
.Bl -tag -width "tmac.doc-ditroff" -compact
.It Pa tmac.doc
Manual and general text domain macros.
.It Pa tmac.doc-common
Shared structural macros (between nroff/troff/groff).
.It Pa tmac.doc-nroff
Site dependent nroff style file.
.It Pa tmac.doc-ditroff
Site dependent groff/troff/ditroff style file.
.It Pa tmac.doc-syms
Special defines (such as the standards macro).
.El
.Sh SEE ALSO
.Xr mdoc.samples 7
.Sh HISTORY
The
.Nm \-mdoc
macro package is
.Ud .