version 1.18, 2009/07/04 09:00:41 |
version 1.92, 2010/12/08 10:58:22 |
|
|
.\" $Id$ |
.\" $Id$ |
.\" |
.\" |
.\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se> |
.\" Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv> |
.\" |
.\" |
.\" Permission to use, copy, modify, and distribute this software for any |
.\" Permission to use, copy, modify, and distribute this software for any |
.\" purpose with or without fee is hereby granted, provided that the above |
.\" purpose with or without fee is hereby granted, provided that the above |
|
|
.Dd $Mdocdate$ |
.Dd $Mdocdate$ |
.Dt MAN 7 |
.Dt MAN 7 |
.Os |
.Os |
.\" SECTION |
|
.Sh NAME |
.Sh NAME |
.Nm man |
.Nm man |
.Nd man language reference |
.Nd man language reference |
.\" SECTION |
|
.Sh DESCRIPTION |
.Sh DESCRIPTION |
The |
The |
.Nm man |
.Nm man |
language was historically used to format |
language was historically used to format |
.Ux |
.Ux |
manuals. This reference document describes the syntax and structure of |
manuals. |
this language. |
This reference document describes its syntax, structure, and usage. |
.Pp |
.Pp |
.Em \&Do not |
.Bf -emphasis |
use |
Do not use |
.Nm |
.Nm |
to write your manuals. Use the |
to write your manuals. |
|
.Ef |
|
Use the |
.Xr mdoc 7 |
.Xr mdoc 7 |
language, instead. |
language, instead. |
.\" PARAGRAPH |
|
.Pp |
.Pp |
An |
A |
.Nm |
.Nm |
document follows simple rules: lines beginning with the control |
document follows simple rules: lines beginning with the control |
character |
character |
.Sq \&. |
.Sq \&. |
are parsed for macros. Other lines are interpreted within the scope of |
are parsed for macros. |
|
Other lines are interpreted within the scope of |
prior macros: |
prior macros: |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.SH Macro lines change control state. |
\&.SH Macro lines change control state. |
Other lines are interpreted within the current state. |
Other lines are interpreted within the current state. |
.Ed |
.Ed |
.\" SECTION |
|
.Sh INPUT ENCODING |
.Sh INPUT ENCODING |
.Nm |
.Nm |
documents may contain only graphable 7-bit ASCII characters, the |
documents may contain only graphable 7-bit ASCII characters, the |
space character |
space character, and the tab character. |
.Sq \ , |
|
and tabs |
|
.Sq \et . |
|
All manuals must have |
All manuals must have |
.Ux |
.Ux |
.Sq \en |
line termination. |
line termination. |
|
.Pp |
.Pp |
Blank lines are acceptable; where found, the output will assert a |
Blank lines are acceptable; where found, the output will assert a |
vertical space. |
vertical space. |
.Pp |
|
The |
|
.Sq \ec |
|
escape is common in historical |
|
.Nm |
|
documents; if encountered at the end of a word, it ensures that the |
|
subsequent word isn't off-set by whitespace. |
|
.\" SUB-SECTION |
|
.Ss Comments |
.Ss Comments |
Anything following a |
Text following a |
.Sq \e" |
.Sq \e\*q , |
delimiter is considered a comment (unless the |
whether in a macro or free-form text line, is ignored to the end of |
.Sq \e |
line. |
itself has been escaped) and is ignored to the end of line. |
A macro line with only a control character and comment escape, |
Furthermore, a macro line with only a control character |
.Sq \&.\e\*q , |
.Sq \. , |
is also ignored. |
optionally followed by whitespace, is ignored. |
Macro lines with only a control character and optionally whitespace are |
.\" SUB-SECTION |
stripped from input. |
.Ss Special Characters |
.Ss Special Characters |
Special character sequences begin with the escape character |
Special characters may occur in both macro and free-form lines. |
|
Sequences begin with the escape character |
.Sq \e |
.Sq \e |
followed by either an open-parenthesis |
followed by either an open-parenthesis |
.Sq \&( |
.Sq \&( |
for two-character sequences; an open-bracket |
for two-character sequences; an open-bracket |
.Sq \&[ |
.Sq \&[ |
for n-character sequences (terminated at a close-bracket |
for n-character sequences (terminated at a close-bracket |
.Sq \&] ) ; |
.Sq \&] ) ; |
or a single one-character sequence. |
or a single one-character sequence. |
|
See |
|
.Xr mandoc_char 7 |
|
for a complete list. |
|
Examples include |
|
.Sq \e(em |
|
.Pq em-dash |
|
and |
|
.Sq \ee |
|
.Pq back-slash . |
|
.Ss Text Decoration |
|
Terms may be text-decorated using the |
|
.Sq \ef |
|
escape followed by an indicator: B (bold), I (italic), R (Roman), or P |
|
(revert to previous mode): |
.Pp |
.Pp |
Characters may alternatively be escaped by a slash-asterisk, |
.D1 \efBbold\efR \efIitalic\efP |
.Sq \e* , |
|
with the same combinations as described above. |
|
.Pp |
.Pp |
Terms may also be text-decorated using the |
A numerical representation 3, 2, or 1 (bold, italic, and Roman, |
|
respectively) may be used instead. |
|
A text decoration is only valid, if specified in free-form text, until |
|
the next macro invocation; if specified within a macro, it's only valid |
|
until the macro closes scope. |
|
Note that macros like |
|
.Sx \&BR |
|
open and close a font scope with each argument. |
|
.Pp |
|
The |
.Sq \ef |
.Sq \ef |
escape followed by a text-decoration letter: B (bold), I, (italic), or P |
attribute is forgotten when entering or exiting a macro block. |
and R (Roman, or reset). |
|
.\" SUB-SECTION |
|
.Ss Whitespace |
.Ss Whitespace |
Unless specifically escaped, consecutive blocks of whitespace are pruned |
Whitespace consists of the space character. |
from input. These are later re-added, if applicable, by a front-end |
In free-form lines, whitespace is preserved within a line; unescaped |
utility such as |
trailing spaces are stripped from input (unless in a literal context). |
.Xr mandoc 1 . |
Blank free-form lines, which may include spaces, are permitted and |
.\" SECTION |
rendered as an empty line. |
.Sh STRUCTURE |
.Pp |
|
In macro lines, whitespace delimits arguments and is discarded. |
|
If arguments are quoted, whitespace within the quotes is retained. |
|
.Ss Dates |
|
The |
|
.Sx \&TH |
|
macro is the only |
|
.Nm |
|
macro that requires a date. |
|
The form for this date is the ISO-8601 |
|
standard |
|
.Cm YYYY-MM-DD . |
|
.Ss Scaling Widths |
|
Many macros support scaled widths for their arguments, such as |
|
stipulating a two-inch paragraph indentation with the following: |
|
.Bd -literal -offset indent |
|
\&.HP 2i |
|
.Ed |
|
.Pp |
|
The syntax for scaled widths is |
|
.Sq Li [+-]?[0-9]*.[0-9]*[:unit:]? , |
|
where a decimal must be preceded or proceeded by at least one digit. |
|
Negative numbers, while accepted, are truncated to zero. |
|
The following scaling units are accepted: |
|
.Pp |
|
.Bl -tag -width Ds -offset indent -compact |
|
.It c |
|
centimetre |
|
.It i |
|
inch |
|
.It P |
|
pica (~1/6 inch) |
|
.It p |
|
point (~1/72 inch) |
|
.It f |
|
synonym for |
|
.Sq u |
|
.It v |
|
default vertical span |
|
.It m |
|
width of rendered |
|
.Sq m |
|
.Pq em |
|
character |
|
.It n |
|
width of rendered |
|
.Sq n |
|
.Pq en |
|
character |
|
.It u |
|
default horizontal span |
|
.It M |
|
mini-em (~1/100 em) |
|
.El |
|
.Pp |
|
Using anything other than |
|
.Sq m , |
|
.Sq n , |
|
.Sq u , |
|
or |
|
.Sq v |
|
is necessarily non-portable across output media. |
|
.Pp |
|
If a scaling unit is not provided, the numerical value is interpreted |
|
under the default rules of |
|
.Sq v |
|
for vertical spaces and |
|
.Sq u |
|
for horizontal ones. |
|
.Em Note : |
|
this differs from |
|
.Xr mdoc 7 , |
|
which, if a unit is not provided, will instead interpret the string as |
|
literal text. |
|
.Ss Sentence Spacing |
|
When composing a manual, make sure that sentences end at the end of |
|
a line. |
|
By doing so, front-ends will be able to apply the proper amount of |
|
spacing after the end of sentence (unescaped) period, exclamation mark, |
|
or question mark followed by zero or more non-sentence closing |
|
delimiters |
|
.Po |
|
.Sq \&) , |
|
.Sq \&] , |
|
.Sq \&' , |
|
.Sq \&" |
|
.Pc . |
|
.Sh MANUAL STRUCTURE |
Each |
Each |
.Nm |
.Nm |
document must contain contains at least the |
document must contain the |
.Sq \&.TH |
.Sx \&TH |
macro describing the document's section and title. It may occur |
macro describing the document's section and title. |
anywhere in the document, although conventionally, it appears as the |
It may occur anywhere in the document, although conventionally it |
first macro. |
appears as the first macro. |
.Pp |
.Pp |
Beyond the |
Beyond |
.Sq \&.TH , |
.Sx \&TH , |
at least one macro or text node must appear in the document. |
at least one macro or text node must appear in the document. |
.\" SECTION |
Documents are generally structured as follows: |
.Sh SYNTAX |
.Bd -literal -offset indent |
Macros are one to three three characters in length and begin with a |
\&.TH FOO 1 2009-10-10 |
control character , |
\&.SH NAME |
|
\efBfoo\efR \e(en a description goes here |
|
\&.\e\*q .SH LIBRARY |
|
\&.\e\*q For sections 2 & 3 only. |
|
\&.\e\*q Not used in OpenBSD. |
|
\&.SH SYNOPSIS |
|
\efBfoo\efR [\efB\e-options\efR] arguments... |
|
\&.SH DESCRIPTION |
|
The \efBfoo\efR utility processes files... |
|
\&.\e\*q .SH IMPLEMENTATION NOTES |
|
\&.\e\*q Not used in OpenBSD. |
|
\&.\e\*q .SH RETURN VALUES |
|
\&.\e\*q For sections 2, 3, & 9 only. |
|
\&.\e\*q .SH ENVIRONMENT |
|
\&.\e\*q For sections 1, 6, 7, & 8 only. |
|
\&.\e\*q .SH FILES |
|
\&.\e\*q .SH EXIT STATUS |
|
\&.\e\*q For sections 1, 6, & 8 only. |
|
\&.\e\*q .SH EXAMPLES |
|
\&.\e\*q .SH DIAGNOSTICS |
|
\&.\e\*q For sections 1, 4, 6, 7, & 8 only. |
|
\&.\e\*q .SH ERRORS |
|
\&.\e\*q For sections 2, 3, & 9 only. |
|
\&.\e\*q .SH SEE ALSO |
|
\&.\e\*q .BR foo ( 1 ) |
|
\&.\e\*q .SH STANDARDS |
|
\&.\e\*q .SH HISTORY |
|
\&.\e\*q .SH AUTHORS |
|
\&.\e\*q .SH CAVEATS |
|
\&.\e\*q .SH BUGS |
|
\&.\e\*q .SH SECURITY CONSIDERATIONS |
|
\&.\e\*q Not used in OpenBSD. |
|
.Ed |
|
.Pp |
|
The sections in a |
|
.Nm |
|
document are conventionally ordered as they appear above. |
|
Sections should be composed as follows: |
|
.Bl -ohang -offset indent |
|
.It Em NAME |
|
The name(s) and a short description of the documented material. |
|
The syntax for this is generally as follows: |
|
.Pp |
|
.D1 \efBname\efR \e(en description |
|
.It Em LIBRARY |
|
The name of the library containing the documented material, which is |
|
assumed to be a function in a section 2 or 3 manual. |
|
For functions in the C library, this may be as follows: |
|
.Pp |
|
.D1 Standard C Library (libc, -lc) |
|
.It Em SYNOPSIS |
|
Documents the utility invocation syntax, function call syntax, or device |
|
configuration. |
|
.Pp |
|
For the first, utilities (sections 1, 6, and 8), this is |
|
generally structured as follows: |
|
.Pp |
|
.D1 \efBname\efR [-\efBab\efR] [-\efBc\efR\efIarg\efR] \efBpath\efR... |
|
.Pp |
|
For the second, function calls (sections 2, 3, 9): |
|
.Pp |
|
.D1 \&.B char *name(char *\efIarg\efR); |
|
.Pp |
|
And for the third, configurations (section 4): |
|
.Pp |
|
.D1 \&.B name* at cardbus ? function ? |
|
.Pp |
|
Manuals not in these sections generally don't need a |
|
.Em SYNOPSIS . |
|
.It Em DESCRIPTION |
|
This expands upon the brief, one-line description in |
|
.Em NAME . |
|
It usually contains a break-down of the options (if documenting a |
|
command). |
|
.It Em IMPLEMENTATION NOTES |
|
Implementation-specific notes should be kept here. |
|
This is useful when implementing standard functions that may have side |
|
effects or notable algorithmic implications. |
|
.It Em RETURN VALUES |
|
This section documents the return values of functions in sections 2, 3, and 9. |
|
.It Em ENVIRONMENT |
|
Documents any usages of environment variables, e.g., |
|
.Xr environ 7 . |
|
.It Em FILES |
|
Documents files used. |
|
It's helpful to document both the file name and a short description of how |
|
the file is used (created, modified, etc.). |
|
.It Em EXIT STATUS |
|
This section documents the command exit status for |
|
section 1, 6, and 8 utilities. |
|
Historically, this information was described in |
|
.Em DIAGNOSTICS , |
|
a practise that is now discouraged. |
|
.It Em EXAMPLES |
|
Example usages. |
|
This often contains snippets of well-formed, |
|
well-tested invocations. |
|
Make sure that examples work properly! |
|
.It Em DIAGNOSTICS |
|
Documents error conditions. |
|
This is most useful in section 4 manuals. |
|
Historically, this section was used in place of |
|
.Em EXIT STATUS |
|
for manuals in sections 1, 6, and 8; however, this practise is |
|
discouraged. |
|
.It Em ERRORS |
|
Documents error handling in sections 2, 3, and 9. |
|
.It Em SEE ALSO |
|
References other manuals with related topics. |
|
This section should exist for most manuals. |
|
.Pp |
|
.D1 \&.BR bar \&( 1 \&), |
|
.Pp |
|
Cross-references should conventionally be ordered |
|
first by section, then alphabetically. |
|
.It Em STANDARDS |
|
References any standards implemented or used, such as |
|
.Pp |
|
.D1 IEEE Std 1003.2 (\e(lqPOSIX.2\e(rq) |
|
.Pp |
|
If not adhering to any standards, the |
|
.Em HISTORY |
|
section should be used. |
|
.It Em HISTORY |
|
A brief history of the subject, including where support first appeared. |
|
.It Em AUTHORS |
|
Credits to the person or persons who wrote the code and/or documentation. |
|
Authors should generally be noted by both name and email address. |
|
.It Em CAVEATS |
|
Common misuses and misunderstandings should be explained |
|
in this section. |
|
.It Em BUGS |
|
Known bugs, limitations, and work-arounds should be described |
|
in this section. |
|
.It Em SECURITY CONSIDERATIONS |
|
Documents any security precautions that operators should consider. |
|
.El |
|
.Sh MACRO SYNTAX |
|
Macros are one to three characters in length and begin with a |
|
control character, |
.Sq \&. , |
.Sq \&. , |
at the beginning of the line. An arbitrary amount of whitespace may |
at the beginning of the line. |
sit between the control character and the macro name. Thus, |
The |
.Sq \&.PP |
.Sq \(aq |
|
macro control character is also accepted. |
|
An arbitrary amount of whitespace (spaces or tabs) may sit between the |
|
control character and the macro name. |
|
Thus, the following are equivalent: |
|
.Bd -literal -offset indent |
|
\&.PP |
|
\&.\ \ \ PP |
|
.Ed |
|
.Pp |
|
The |
|
.Nm |
|
macros are classified by scope: line scope or block scope. |
|
Line macros are only scoped to the current line (and, in some |
|
situations, the subsequent line). |
|
Block macros are scoped to the current line and subsequent lines until |
|
closed by another block macro. |
|
.Ss Line Macros |
|
Line macros are generally scoped to the current line, with the body |
|
consisting of zero or more arguments. |
|
If a macro is scoped to the next line and the line arguments are empty, |
|
the next line, which must be text, is used instead. |
|
Thus: |
|
.Bd -literal -offset indent |
|
\&.I |
|
foo |
|
.Ed |
|
.Pp |
|
is equivalent to |
|
.Sq \&.I foo . |
|
If next-line macros are invoked consecutively, only the last is used. |
|
If a next-line macro is followed by a non-next-line macro, an error is |
|
raised, except for |
|
.Sx \&br , |
|
.Sx \&sp , |
and |
and |
.Sq \&.\ \ \ \&PP |
.Sx \&na . |
are equivalent. |
|
.Pp |
.Pp |
All |
The syntax is as follows: |
|
.Bd -literal -offset indent |
|
\&.YO \(lBbody...\(rB |
|
\(lBbody...\(rB |
|
.Ed |
|
.Pp |
|
.Bl -column -compact -offset indent "MacroX" "ArgumentsX" "ScopeXXXXX" "CompatX" |
|
.It Em Macro Ta Em Arguments Ta Em Scope Ta Em Notes |
|
.It Sx \&AT Ta <=1 Ta current Ta \& |
|
.It Sx \&B Ta n Ta next-line Ta \& |
|
.It Sx \&BI Ta n Ta current Ta \& |
|
.It Sx \&BR Ta n Ta current Ta \& |
|
.It Sx \&DT Ta 0 Ta current Ta \& |
|
.It Sx \&I Ta n Ta next-line Ta \& |
|
.It Sx \&IB Ta n Ta current Ta \& |
|
.It Sx \&IR Ta n Ta current Ta \& |
|
.It Sx \&R Ta n Ta next-line Ta \& |
|
.It Sx \&RB Ta n Ta current Ta \& |
|
.It Sx \&RI Ta n Ta current Ta \& |
|
.It Sx \&SB Ta n Ta next-line Ta \& |
|
.It Sx \&SM Ta n Ta next-line Ta \& |
|
.It Sx \&TH Ta >1, <6 Ta current Ta \& |
|
.It Sx \&UC Ta <=1 Ta current Ta \& |
|
.It Sx \&br Ta 0 Ta current Ta compat |
|
.It Sx \&fi Ta 0 Ta current Ta compat |
|
.It Sx \&ft Ta 1 Ta current Ta compat |
|
.It Sx \&in Ta 1 Ta current Ta compat |
|
.It Sx \&na Ta 0 Ta current Ta compat |
|
.It Sx \&nf Ta 0 Ta current Ta compat |
|
.It Sx \&sp Ta 1 Ta current Ta compat |
|
.El |
|
.Pp |
|
Macros marked as |
|
.Qq compat |
|
are included for compatibility with the significant corpus of existing |
|
manuals that mix dialects of roff. |
|
These macros should not be used for portable |
.Nm |
.Nm |
macros follow the same structural rules: |
manuals. |
|
.Ss Block Macros |
|
Block macros comprise a head and body. |
|
As with in-line macros, the head is scoped to the current line and, in |
|
one circumstance, the next line (the next-line stipulations as in |
|
.Sx Line Macros |
|
apply here as well). |
|
.Pp |
|
The syntax is as follows: |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.YO \(lBbody...\(rB |
\&.YO \(lBhead...\(rB |
|
\(lBhead...\(rB |
|
\(lBbody...\(rB |
.Ed |
.Ed |
.Pp |
.Pp |
|
The closure of body scope may be to the section, where a macro is closed |
|
by |
|
.Sx \&SH ; |
|
sub-section, closed by a section or |
|
.Sx \&SS ; |
|
part, closed by a section, sub-section, or |
|
.Sx \&RE ; |
|
or paragraph, closed by a section, sub-section, part, |
|
.Sx \&HP , |
|
.Sx \&IP , |
|
.Sx \&LP , |
|
.Sx \&P , |
|
.Sx \&PP , |
|
or |
|
.Sx \&TP . |
|
No closure refers to an explicit block closing macro. |
|
.Pp |
|
As a rule, block macros may not be nested; thus, calling a block macro |
|
while another block macro scope is open, and the open scope is not |
|
implicitly closed, is syntactically incorrect. |
|
.Pp |
|
.Bl -column -compact -offset indent "MacroX" "ArgumentsX" "Head ScopeX" "sub-sectionX" "compatX" |
|
.It Em Macro Ta Em Arguments Ta Em Head Scope Ta Em Body Scope Ta Em Notes |
|
.It Sx \&HP Ta <2 Ta current Ta paragraph Ta \& |
|
.It Sx \&IP Ta <3 Ta current Ta paragraph Ta \& |
|
.It Sx \&LP Ta 0 Ta current Ta paragraph Ta \& |
|
.It Sx \&P Ta 0 Ta current Ta paragraph Ta \& |
|
.It Sx \&PP Ta 0 Ta current Ta paragraph Ta \& |
|
.It Sx \&RE Ta 0 Ta current Ta none Ta compat |
|
.It Sx \&RS Ta 1 Ta current Ta part Ta compat |
|
.It Sx \&SH Ta >0 Ta next-line Ta section Ta \& |
|
.It Sx \&SS Ta >0 Ta next-line Ta sub-section Ta \& |
|
.It Sx \&TP Ta n Ta next-line Ta paragraph Ta \& |
|
.El |
|
.Pp |
|
Macros marked |
|
.Qq compat |
|
are as mentioned in |
|
.Sx Line Macros . |
|
.Pp |
|
If a block macro is next-line scoped, it may only be followed by in-line |
|
macros for decorating text. |
|
.Sh REFERENCE |
|
This section is a canonical reference to all macros, arranged |
|
alphabetically. |
|
For the scoping of individual macros, see |
|
.Sx MACRO SYNTAX . |
|
.Ss \&AT |
|
Sets the volume for the footer for compatibility with man pages from |
|
.Tn AT&T UNIX |
|
releases. |
|
The optional arguments specify which release it is from. |
|
.Ss \&B |
|
Text is rendered in bold face. |
|
.Pp |
|
See also |
|
.Sx \&I |
|
and |
|
.Sx \&R . |
|
.Ss \&BI |
|
Text is rendered alternately in bold face and italic. |
|
Thus, |
|
.Sq .BI this word and that |
|
causes |
|
.Sq this |
|
and |
|
.Sq and |
|
to render in bold face, while |
|
.Sq word |
|
and |
|
.Sq that |
|
render in italics. |
|
Whitespace between arguments is omitted in output. |
|
.Pp |
|
Examples: |
|
.Pp |
|
.D1 \&.BI bold italic bold italic |
|
.Pp |
|
The output of this example will be emboldened |
|
.Dq bold |
|
and italicised |
|
.Dq italic , |
|
with spaces stripped between arguments. |
|
.Pp |
|
See also |
|
.Sx \&IB , |
|
.Sx \&BR , |
|
.Sx \&RB , |
|
.Sx \&RI , |
|
and |
|
.Sx \&IR . |
|
.Ss \&BR |
|
Text is rendered alternately in bold face and roman (the default font). |
|
Whitespace between arguments is omitted in output. |
|
.Pp |
|
See |
|
.Sx \&BI |
|
for an equivalent example. |
|
.Pp |
|
See also |
|
.Sx \&BI , |
|
.Sx \&IB , |
|
.Sx \&RB , |
|
.Sx \&RI , |
|
and |
|
.Sx \&IR . |
|
.Ss \&DT |
|
Has no effect. |
|
Included for compatibility. |
|
.Ss \&HP |
|
Begin a paragraph whose initial output line is left-justified, but |
|
subsequent output lines are indented, with the following syntax: |
|
.Bd -filled -offset indent |
|
.Pf \. Sx \&HP |
|
.Op Cm width |
|
.Ed |
|
.Pp |
The |
The |
.Dq body |
.Cm width |
consists of zero or more arguments to the macro. |
argument must conform to |
|
.Sx Scaling Widths . |
|
If specified, it's saved for later paragraph left-margins; if unspecified, the |
|
saved or default width is used. |
.Pp |
.Pp |
.Nm |
See also |
has a primitive notion of multi-line scope for the following macros: |
.Sx \&IP , |
.Sq \&.TM , |
.Sx \&LP , |
.Sq \&.SM , |
.Sx \&P , |
.Sq \&.SB , |
.Sx \&PP , |
.Sq \&.BI , |
|
.Sq \&.IB , |
|
.Sq \&.BR , |
|
.Sq \&.RB , |
|
.Sq \&.R , |
|
.Sq \&.B , |
|
.Sq \&.I , |
|
.Sq \&.IR |
|
and |
and |
.Sq \&.RI . |
.Sx \&TP . |
When these macros are invoked without arguments, the subsequent line is |
.Ss \&I |
considered a continuation of the macro. Thus: |
Text is rendered in italics. |
.Bd -literal -offset indent |
.Pp |
\&.RI |
See also |
foo |
.Sx \&B |
|
and |
|
.Sx \&R . |
|
.Ss \&IB |
|
Text is rendered alternately in italics and bold face. |
|
Whitespace between arguments is omitted in output. |
|
.Pp |
|
See |
|
.Sx \&BI |
|
for an equivalent example. |
|
.Pp |
|
See also |
|
.Sx \&BI , |
|
.Sx \&BR , |
|
.Sx \&RB , |
|
.Sx \&RI , |
|
and |
|
.Sx \&IR . |
|
.Ss \&IP |
|
Begin an indented paragraph with the following syntax: |
|
.Bd -filled -offset indent |
|
.Pf \. Sx \&IP |
|
.Op Cm head Op Cm width |
.Ed |
.Ed |
.Pp |
.Pp |
is equivalent to |
The |
.Sq \&.RI foo . |
.Cm width |
If two consecutive lines exhibit the latter behaviour, |
argument defines the width of the left margin and is defined by |
an error is raised. Thus, the following is not acceptable: |
.Sx Scaling Widths . |
.Bd -literal -offset indent |
It's saved for later paragraph left-margins; if unspecified, the saved or |
\&.RI |
default width is used. |
\&.I |
.Pp |
Hello, world. |
The |
|
.Cm head |
|
argument is used as a leading term, flushed to the left margin. |
|
This is useful for bulleted paragraphs and so on. |
|
.Pp |
|
See also |
|
.Sx \&HP , |
|
.Sx \&LP , |
|
.Sx \&P , |
|
.Sx \&PP , |
|
and |
|
.Sx \&TP . |
|
.Ss \&IR |
|
Text is rendered alternately in italics and roman (the default font). |
|
Whitespace between arguments is omitted in output. |
|
.Pp |
|
See |
|
.Sx \&BI |
|
for an equivalent example. |
|
.Pp |
|
See also |
|
.Sx \&BI , |
|
.Sx \&IB , |
|
.Sx \&BR , |
|
.Sx \&RB , |
|
and |
|
.Sx \&RI . |
|
.Ss \&LP |
|
Begin an undecorated paragraph. |
|
The scope of a paragraph is closed by a subsequent paragraph, |
|
sub-section, section, or end of file. |
|
The saved paragraph left-margin width is reset to the default. |
|
.Pp |
|
See also |
|
.Sx \&HP , |
|
.Sx \&IP , |
|
.Sx \&P , |
|
.Sx \&PP , |
|
and |
|
.Sx \&TP . |
|
.Ss \&P |
|
Synonym for |
|
.Sx \&LP . |
|
.Pp |
|
See also |
|
.Sx \&HP , |
|
.Sx \&IP , |
|
.Sx \&LP , |
|
.Sx \&PP , |
|
and |
|
.Sx \&TP . |
|
.Ss \&PP |
|
Synonym for |
|
.Sx \&LP . |
|
.Pp |
|
See also |
|
.Sx \&HP , |
|
.Sx \&IP , |
|
.Sx \&LP , |
|
.Sx \&P , |
|
and |
|
.Sx \&TP . |
|
.Ss \&R |
|
Text is rendered in roman (the default font). |
|
.Pp |
|
See also |
|
.Sx \&I |
|
and |
|
.Sx \&B . |
|
.Ss \&RB |
|
Text is rendered alternately in roman (the default font) and bold face. |
|
Whitespace between arguments is omitted in output. |
|
.Pp |
|
See |
|
.Sx \&BI |
|
for an equivalent example. |
|
.Pp |
|
See also |
|
.Sx \&BI , |
|
.Sx \&IB , |
|
.Sx \&BR , |
|
.Sx \&RI , |
|
and |
|
.Sx \&IR . |
|
.Ss \&RE |
|
Explicitly close out the scope of a prior |
|
.Sx \&RS . |
|
.Ss \&RI |
|
Text is rendered alternately in roman (the default font) and italics. |
|
Whitespace between arguments is omitted in output. |
|
.Pp |
|
See |
|
.Sx \&BI |
|
for an equivalent example. |
|
.Pp |
|
See also |
|
.Sx \&BI , |
|
.Sx \&IB , |
|
.Sx \&BR , |
|
.Sx \&RB , |
|
and |
|
.Sx \&IR . |
|
.Ss \&RS |
|
Begin a part setting the left margin. |
|
The left margin controls the offset, following an initial indentation, |
|
to un-indented text such as that of |
|
.Sx \&PP . |
|
This has the following syntax: |
|
.Bd -filled -offset indent |
|
.Pf \. Sx \&Rs |
|
.Op Cm width |
.Ed |
.Ed |
.Pp |
.Pp |
The |
The |
.Sq \&.TP |
.Cm width |
macro is similar, but does not need an empty argument line to trigger |
argument must conform to |
the behaviour. |
.Sx Scaling Widths . |
.\" SECTION |
If not specified, the saved or default width is used. |
.Sh MACROS |
.Ss \&SB |
This section contains a complete list of all |
Text is rendered in small size (one point smaller than the default font) |
.Nm |
bold face. |
macros and corresponding number of arguments. |
.Ss \&SH |
|
Begin a section. |
|
The scope of a section is only closed by another section or the end of |
|
file. |
|
The paragraph left-margin width is reset to the default. |
|
.Ss \&SM |
|
Text is rendered in small size (one point smaller than the default |
|
font). |
|
.Ss \&SS |
|
Begin a sub-section. |
|
The scope of a sub-section is closed by a subsequent sub-section, |
|
section, or end of file. |
|
The paragraph left-margin width is reset to the default. |
|
.Ss \&TH |
|
Sets the title of the manual page with the following syntax: |
|
.Bd -filled -offset indent |
|
.Pf \. Sx \&TH |
|
.Cm title section |
|
.Op Cm date Op Cm source Op Cm volume |
|
.Ed |
.Pp |
.Pp |
.Bl -column "MacroX" "Arguments" -compact -offset indent |
At least the upper-case document |
.It Em Macro Ta Em Arguments |
.Cm title |
.It \&.TH Ta >1, <6 |
and the manual |
.It \&.SH Ta >0 |
.Cm section |
.It \&.SS Ta >0 |
arguments must be provided. |
.It \&.TP Ta n |
The |
.It \&.LP Ta 0 |
.Cm date |
.It \&.PP Ta 0 |
argument should be formatted as described in |
.It \&.P Ta 0 |
.Sx Dates , |
.It \&.IP Ta <3 |
but will be printed verbatim if it is not. |
.It \&.HP Ta <2 |
If the date is not specified, the current date is used. |
.It \&.SM Ta n |
The |
.It \&.SB Ta n |
.Cm source |
.It \&.BI Ta n |
string specifies the organisation providing the utility. |
.It \&.IB Ta n |
The |
.It \&.BR Ta n |
.Cm volume |
.It \&.RB Ta n |
string replaces the default rendered volume, which is dictated by the |
.It \&.R Ta n |
manual section. |
.It \&.B Ta n |
|
.It \&.I Ta n |
|
.It \&.IR Ta n |
|
.It \&.RI Ta n |
|
.El |
|
.Pp |
.Pp |
Although not historically part of the |
Examples: |
.Nm |
|
system, the following macros are also supported: |
|
.Pp |
.Pp |
.Bl -column "MacroX" "Arguments" -compact -offset indent |
.D1 \&.TH CVS 5 "1992-02-12" GNU |
.It Em Macro Ta Em Arguments |
.Ss \&TP |
.It \&.br Ta 0 |
Begin a paragraph where the head, if exceeding the indentation width, is |
.It \&.i Ta n |
followed by a newline; if not, the body follows on the same line after a |
.El |
buffer to the indentation width. |
|
Subsequent output lines are indented. |
|
The syntax is as follows: |
|
.Bd -filled -offset indent |
|
.Pf \. Sx \&TP |
|
.Op Cm width |
|
.Ed |
.Pp |
.Pp |
These follow the same calling conventions as the above |
The |
.Nm |
.Cm width |
macros. |
argument must conform to |
.\" SECTION |
.Sx Scaling Widths . |
.Sh COMPATIBILITY |
If specified, it's saved for later paragraph left-margins; if |
|
unspecified, the saved or default width is used. |
|
.Pp |
|
See also |
|
.Sx \&HP , |
|
.Sx \&IP , |
|
.Sx \&LP , |
|
.Sx \&P , |
|
and |
|
.Sx \&PP . |
|
.Ss \&UC |
|
Sets the volume for the footer for compatibility with man pages from |
|
BSD releases. |
|
The optional first argument specifies which release it is from. |
|
.Ss \&br |
|
Breaks the current line. |
|
Consecutive invocations have no further effect. |
|
.Pp |
|
See also |
|
.Sx \&sp . |
|
.Ss \&fi |
|
End literal mode begun by |
|
.Sx \&nf . |
|
.Ss \&ft |
|
Change the current font mode. |
See |
See |
.Xr mdoc 7 |
.Sx Text Decoration |
for groff compatibility notes. |
for a listing of available font modes. |
.\" SECTION |
.Ss \&in |
|
Indent relative to the current indentation: |
|
.Pp |
|
.D1 Pf \. Sx \&in Op Cm width |
|
.Pp |
|
If |
|
.Cm width |
|
is signed, the new offset is relative. |
|
Otherwise, it is absolute. |
|
This value is reset upon the next paragraph, section, or sub-section. |
|
.Ss \&na |
|
Don't align to the right margin. |
|
.Ss \&nf |
|
Begin literal mode: all subsequent free-form lines have their end of |
|
line boundaries preserved. |
|
May be ended by |
|
.Sx \&fi . |
|
.Ss \&sp |
|
Insert vertical spaces into output with the following syntax: |
|
.Bd -filled -offset indent |
|
.Pf \. Sx \&sp |
|
.Op Cm height |
|
.Ed |
|
.Pp |
|
Insert |
|
.Cm height |
|
spaces, which must conform to |
|
.Sx Scaling Widths . |
|
If 0, this is equivalent to the |
|
.Sx \&br |
|
macro. |
|
Defaults to 1, if unspecified. |
|
.Pp |
|
See also |
|
.Sx \&br . |
|
.Sh COMPATIBILITY |
|
This section documents areas of questionable portability between |
|
implementations of the |
|
.Nm |
|
language. |
|
.Pp |
|
.Bl -dash -compact |
|
.It |
|
In quoted literals, GNU troff allowed pair-wise double-quotes to produce |
|
a standalone double-quote in formatted output. |
|
It is not known whether this behaviour is exhibited by other formatters. |
|
.It |
|
troff suppresses a newline before |
|
.Sq \(aq |
|
macro output; in mandoc, it is an alias for the standard |
|
.Sq \&. |
|
control character. |
|
.It |
|
The |
|
.Sq \eh |
|
.Pq horizontal position , |
|
.Sq \ev |
|
.Pq vertical position , |
|
.Sq \em |
|
.Pq text colour , |
|
.Sq \eM |
|
.Pq text filling colour , |
|
.Sq \ez |
|
.Pq zero-length character , |
|
.Sq \ew |
|
.Pq string length , |
|
.Sq \ek |
|
.Pq horizontal position marker , |
|
.Sq \eo |
|
.Pq text overstrike , |
|
and |
|
.Sq \es |
|
.Pq text size |
|
escape sequences are all discarded in mandoc. |
|
.It |
|
The |
|
.Sq \ef |
|
scaling unit is accepted by mandoc, but rendered as the default unit. |
|
.It |
|
The |
|
.Sx \&sp |
|
macro does not accept negative values in mandoc. |
|
In GNU troff, this would result in strange behaviour. |
|
.El |
.Sh SEE ALSO |
.Sh SEE ALSO |
|
.Xr man 1 , |
.Xr mandoc 1 , |
.Xr mandoc 1 , |
.Xr mandoc_char 7 |
.Xr mandoc_char 7 , |
.\" SECTION |
.Xr mdoc 7 |
.Sh AUTHORS |
.Sh HISTORY |
The |
The |
.Nm |
.Nm |
utility was written by |
language first appeared as a macro package for the roff typesetting |
.An Kristaps Dzonsons Aq kristaps@kth.se . |
system in |
.\" SECTION |
.At v7 . |
|
It was later rewritten by James Clark as a macro package for groff. |
|
The stand-alone implementation that is part of the |
|
.Xr mandoc 1 |
|
utility written by Kristaps Dzonsons appeared in |
|
.Ox 4.6 . |
|
.Sh AUTHORS |
|
This |
|
.Nm |
|
reference was written by |
|
.An Kristaps Dzonsons Aq kristaps@bsd.lv . |
.Sh CAVEATS |
.Sh CAVEATS |
Do not use this language. Use |
Do not use this language. |
|
Use |
.Xr mdoc 7 , |
.Xr mdoc 7 , |
instead. |
instead. |