version 1.94, 2010/04/13 05:26:49 |
version 1.186, 2011/04/17 11:57:07 |
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|
.\" $Id$ |
.\" $Id$ |
.\" |
.\" |
.\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@bsd.lv> |
.\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
|
.\" Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org> |
.\" |
.\" |
.\" 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 |
|
|
language is used to format |
language is used to format |
.Bx |
.Bx |
.Ux |
.Ux |
manuals. In this reference document, we describe its syntax, structure, |
manuals. |
and usage. Our reference implementation is mandoc; the |
This reference document describes its syntax, structure, and |
|
usage. |
|
The reference implementation is |
|
.Xr mandoc 1 ; |
|
the |
.Sx COMPATIBILITY |
.Sx COMPATIBILITY |
section describes compatibility with other troff \-mdoc implementations. |
section describes compatibility with other troff \-mdoc implementations. |
.Pp |
.Pp |
An |
An |
.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. |
prior macros: |
Text lines, those not beginning with the control character, are |
|
interpreted within the scope of 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. |
Text lines are interpreted within the current state. |
.Ed |
.Ed |
.Sh LANGUAGE SYNTAX |
.Sh LANGUAGE SYNTAX |
.Nm |
.Nm |
documents may contain only graphable 7-bit ASCII characters, the space |
documents may contain only graphable 7-bit ASCII characters, the space |
character, and, in certain circumstances, the tab character. All |
character, and, in certain circumstances, the tab character. |
manuals must have |
.Pp |
.Ux |
If the first character of a text line is a space, that line is printed |
line terminators. |
with a leading newline. |
.Ss Comments |
.Ss Comments |
Text following a |
Text following a |
.Sq \e" , |
.Sq \e\*q , |
whether in a macro or free-form text line, is ignored to the end of |
whether in a macro or text line, is ignored to the end of |
line. A macro line with only a control character and comment escape, |
line. |
.Sq \&.\e" , |
A macro line with only a control character and comment escape, |
is also ignored. Macro lines with only a control charater and optionally |
.Sq \&.\e\*q , |
whitespace are stripped from input. |
is also ignored. |
.Ss Reserved Characters |
Macro lines with only a control character and optional whitespace are |
Within a macro line, the following characters are reserved: |
stripped from input. |
|
.Ss Reserved Terms |
|
Within a macro line, the following terms are reserved: |
.Pp |
.Pp |
.Bl -tag -width Ds -offset indent -compact |
.Bl -tag -width Ds -offset indent -compact |
.It \&. |
.It \&. |
.Pq period |
.Pq period |
|
.It \e. |
|
.Pq escaped period |
.It \&, |
.It \&, |
.Pq comma |
.Pq comma |
.It \&: |
.It \&: |
Line 83 Within a macro line, the following characters are rese |
|
Line 93 Within a macro line, the following characters are rese |
|
.Pq exclamation |
.Pq exclamation |
.It \&| |
.It \&| |
.Pq vertical bar |
.Pq vertical bar |
|
.It \e*(Ba |
|
.Pq reserved-word vertical bar |
.El |
.El |
.Pp |
.Pp |
Use of reserved characters is described in |
Use of reserved terms is described in |
.Sx MACRO SYNTAX . |
.Sx MACRO SYNTAX . |
For general use in macro lines, these characters must either be escaped |
For general use in macro lines, these can be escaped with a non-breaking |
with a non-breaking space |
space |
.Pq Sq \e& |
.Pq Sq \e& . |
or, if applicable, an appropriate escape sequence used. |
In text lines, these may be used as normal punctuation. |
.Ss Special Characters |
.Ss Special Characters |
Special characters may occur in both macro and free-form lines. |
Special characters may occur in both macro and text lines. |
Sequences begin with the escape character |
Sequences begin with the escape character |
.Sq \e |
.Sq \e |
followed by either an open-parenthesis |
followed by either an open-parenthesis |
Line 101 for two-character sequences; an open-bracket |
|
Line 113 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. See |
or a single one character sequence. |
|
See |
.Xr mandoc_char 7 |
.Xr mandoc_char 7 |
for a complete list. Examples include |
for a complete list. |
|
Examples include |
.Sq \e(em |
.Sq \e(em |
.Pq em-dash |
.Pq em-dash |
and |
and |
|
|
.Ss Text Decoration |
.Ss Text Decoration |
Terms may be text-decorated using the |
Terms may be text-decorated using the |
.Sq \ef |
.Sq \ef |
escape followed by an indicator: B (bold), I, (italic), R (Roman), or P |
escape followed by an indicator: B (bold), I (italic), R (Roman), or P |
(revert to previous mode): |
(revert to previous mode): |
.Pp |
.Pp |
.D1 \efBbold\efR \efIitalic\efP |
.Dl \efBbold\efR \efIitalic\efP |
.Pp |
.Pp |
A numerical representation 3, 2, or 1 (bold, italic, and Roman, |
A numerical representation 3, 2, or 1 (bold, italic, and Roman, |
respectively) may be used instead. A text decoration is valid within |
respectively) may be used instead. |
the current font scope only: if a macro opens a font scope alongside |
If a macro opens a font scope after calling |
its own scope, such as |
.Sq \ef , |
.Sx \&Bf |
such as with |
.Cm \&Sy , |
.Sx \&Bf , |
in-scope invocations of |
the |
.Sq \ef |
.Sq \ef |
are only valid within the font scope of the macro. If |
mode will be restored upon exiting the |
.Sq \ef |
.Sx \&Bf |
is specified outside of any font scope, such as in unenclosed, free-form |
scope. |
text, it will affect the remainder of the document. |
|
.Pp |
.Pp |
Text may also be sized with the |
Note this form is |
.Sq \es |
|
escape, whose syntax is one of |
|
.Sq \es+-n |
|
for one-digit numerals; |
|
.Sq \es(+-nn |
|
or |
|
.Sq \es+-(nn |
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for two-digit numerals; and |
|
.Sq \es[+-N] , |
|
.Sq \es+-[N] , |
|
.Sq \es'+-N' , |
|
or |
|
.Sq \es+-'N' |
|
for arbitrary-digit numerals: |
|
.Pp |
|
.D1 \es+1bigger\es-1 |
|
.D1 \es[+10]much bigger\es[-10] |
|
.D1 \es+(10much bigger\es-(10 |
|
.D1 \es+'100'much much bigger\es-'100' |
|
.Pp |
|
Note these forms are |
|
.Em not |
.Em not |
recommended for |
recommended for |
.Nm , |
.Nm , |
which encourages semantic annotation. |
which encourages semantic annotation. |
.Ss Predefined Strings |
.Ss Predefined Strings |
Historically, |
Historically, |
.Xr groff 1 |
troff |
also defined a set of package-specific |
also defined a set of package-specific |
.Dq predefined strings , |
.Dq predefined strings , |
which, like |
which, like |
.Sx Special Characters , |
.Sx Special Characters , |
demark special output characters and strings by way of input codes. |
mark special output characters and strings by way of input codes. |
Predefined strings are escaped with the slash-asterisk, |
Predefined strings are escaped with the slash-asterisk, |
.Sq \e* : |
.Sq \e* : |
single-character |
single-character |
|
|
.Sq \e*[N] . |
.Sq \e*[N] . |
See |
See |
.Xr mandoc_char 7 |
.Xr mandoc_char 7 |
for a complete list. Examples include |
for a complete list. |
|
Examples include |
.Sq \e*(Am |
.Sq \e*(Am |
.Pq ampersand |
.Pq ampersand |
and |
and |
.Sq \e*(Ba |
.Sq \e*(Ba |
.Pq vertical bar . |
.Pq vertical bar . |
.Ss Whitespace |
.Ss Whitespace |
In non-literal free-form lines, consecutive blocks of whitespace are |
Whitespace consists of the space character. |
pruned from input and added later in the output filter, if applicable: |
In text lines, whitespace is preserved within a line; unescaped |
.Bd -literal -offset indent |
trailing spaces are stripped from input (unless in a literal context). |
These spaces are pruned from input. |
Blank text lines, which may include whitespace, are only permitted |
\&.Bd \-literal |
within literal contexts. |
These are not. |
|
\&.Ed |
|
.Ed |
|
.Pp |
.Pp |
In macro lines, whitespace delimits arguments and is discarded. If |
In macro lines, whitespace delimits arguments and is discarded. |
arguments are quoted, whitespace within the quotes is retained. |
If arguments are quoted, whitespace within the quotes is retained. |
.Pp |
|
Blank lines are only permitted within literal contexts, as are lines |
|
containing only whitespace. Tab characters are only acceptable when |
|
delimiting |
|
.Sq \&Bl \-column |
|
or when in a literal context. |
|
.Ss Quotation |
.Ss Quotation |
Macro arguments may be quoted with a double-quote to group |
Macro arguments may be quoted with double-quotes to group |
space-delimited terms or to retain blocks of whitespace. A quoted |
space-delimited terms or to retain blocks of whitespace. |
argument begins with a double-quote preceded by whitespace. The next |
A quoted argument begins with a double-quote preceded by whitespace. |
double-quote not pair-wise adjacent to another double-quote terminates |
The next double-quote not pairwise adjacent to another double-quote |
the literal, regardless of surrounding whitespace. |
terminates the literal, regardless of surrounding whitespace. |
.Pp |
.Pp |
This produces tokens |
Note that any quoted text, even if it would cause a macro invocation |
.Sq a" , |
when unquoted, is considered literal text. |
.Sq b c , |
Thus, the following produces |
.Sq de , |
.Sq Op "Fl a" : |
and |
|
.Sq fg" . |
|
Note that any quoted term, be it argument or macro, is indiscriminately |
|
considered literal text. Thus, the following produces |
|
.Sq \&Em a : |
|
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Em "Em a" |
\&.Op "Fl a" |
.Ed |
.Ed |
.Pp |
.Pp |
In free-form mode, quotes are regarded as opaque text. |
In text lines, quotes are regarded as opaque text. |
.Ss Dates |
|
There are several macros in |
|
.Nm |
|
that require a date argument. The canonical form for dates is the |
|
American format: |
|
.Pp |
|
.D1 Cm Month Day , Year |
|
.Pp |
|
The |
|
.Cm Day |
|
value is an optionally zero-padded numeral. The |
|
.Cm Month |
|
value is the full month name. The |
|
.Cm Year |
|
value is the full four-digit year. |
|
.Pp |
|
Reduced form dates are broken-down canonical form dates: |
|
.Pp |
|
.D1 Cm Month , Year |
|
.D1 Cm Year |
|
.Pp |
|
Some examples of valid dates follow: |
|
.Pp |
|
.D1 "May, 2009" Pq reduced form |
|
.D1 "2009" Pq reduced form |
|
.D1 "May 20, 2009" Pq canonical form |
|
.Ss Scaling Widths |
.Ss Scaling Widths |
Many macros support scaled widths for their arguments, such as |
Many macros support scaled widths for their arguments, such as |
stipulating a two-inch list indentation with the following: |
stipulating a two-inch list indentation with the following: |
Line 255 stipulating a two-inch list indentation with the follo |
|
Line 208 stipulating a two-inch list indentation with the follo |
|
The syntax for scaled widths is |
The syntax for scaled widths is |
.Sq Li [+-]?[0-9]*.[0-9]*[:unit:] , |
.Sq Li [+-]?[0-9]*.[0-9]*[:unit:] , |
where a decimal must be preceded or proceeded by at least one digit. |
where a decimal must be preceded or proceeded by at least one digit. |
Negative numbers, while accepted, are truncated to zero. The following |
Negative numbers, while accepted, are truncated to zero. |
scaling units are accepted: |
The following scaling units are accepted: |
.Pp |
.Pp |
.Bl -tag -width Ds -offset indent -compact |
.Bl -tag -width Ds -offset indent -compact |
.It c |
.It c |
Line 294 Using anything other than |
|
Line 247 Using anything other than |
|
.Sq u , |
.Sq u , |
or |
or |
.Sq v |
.Sq v |
is necessarily non-portable across output media. See |
is necessarily non-portable across output media. |
|
See |
.Sx COMPATIBILITY . |
.Sx COMPATIBILITY . |
|
.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 . |
|
.Pp |
|
The proper spacing is also intelligently preserved if a sentence ends at |
|
the boundary of a macro line. |
|
For example: |
|
.Pp |
|
.Dl \&.Xr mandoc 1 \&. |
|
.Dl \&.Fl T \&Ns \&Cm ascii \&. |
.Sh MANUAL STRUCTURE |
.Sh MANUAL STRUCTURE |
A well-formed |
A well-formed |
.Nm |
.Nm |
document consists of a document prologue followed by one or more |
document consists of a document prologue followed by one or more |
sections. |
sections. |
.Pp |
.Pp |
The prologue, which consists of (in order) the |
The prologue, which consists of the |
.Sx \&Dd , |
.Sx \&Dd , |
.Sx \&Dt , |
.Sx \&Dt , |
and |
and |
.Sx \&Os |
.Sx \&Os |
macros, is required for every document. |
macros in that order, is required for every document. |
.Pp |
.Pp |
The first section (sections are denoted by |
The first section (sections are denoted by |
.Sx \&Sh ) |
.Sx \&Sh ) |
Line 316 must be the NAME section, consisting of at least one |
|
Line 290 must be the NAME section, consisting of at least one |
|
followed by |
followed by |
.Sx \&Nd . |
.Sx \&Nd . |
.Pp |
.Pp |
Following that, convention dictates specifying at least the SYNOPSIS and |
Following that, convention dictates specifying at least the |
DESCRIPTION sections, although this varies between manual sections. |
.Em SYNOPSIS |
|
and |
|
.Em DESCRIPTION |
|
sections, although this varies between manual sections. |
.Pp |
.Pp |
The following is a well-formed skeleton |
The following is a well-formed skeleton |
.Nm |
.Nm |
|
|
\&.Dd $\&Mdocdate$ |
\&.Dd $\&Mdocdate$ |
\&.Dt mdoc 7 |
\&.Dt mdoc 7 |
\&.Os |
\&.Os |
\&. |
|
\&.Sh NAME |
\&.Sh NAME |
\&.Nm foo |
\&.Nm foo |
\&.Nd a description goes here |
\&.Nd a description goes here |
\&.\e\*q The next is for sections 2 & 3 only. |
|
\&.\e\*q .Sh LIBRARY |
\&.\e\*q .Sh LIBRARY |
\&. |
\&.\e\*q For sections 2, 3, & 9 only. |
|
\&.\e\*q Not used in OpenBSD. |
\&.Sh SYNOPSIS |
\&.Sh SYNOPSIS |
\&.Nm foo |
\&.Nm foo |
\&.Op Fl options |
\&.Op Fl options |
\&.Ar |
\&.Ar |
\&. |
|
\&.Sh DESCRIPTION |
\&.Sh DESCRIPTION |
The |
The |
\&.Nm |
\&.Nm |
utility processes files ... |
utility processes files ... |
\&.\e\*q .Sh IMPLEMENTATION NOTES |
\&.\e\*q .Sh IMPLEMENTATION NOTES |
\&.\e\*q The next is for sections 1 & 8 only. |
\&.\e\*q Not used in OpenBSD. |
\&.\e\*q .Sh EXIT STATUS |
|
\&.\e\*q The next is for sections 2, 3, & 9 only. |
|
\&.\e\*q .Sh RETURN VALUES |
\&.\e\*q .Sh RETURN VALUES |
\&.\e\*q The next is for sections 1, 6, 7, & 8 only. |
\&.\e\*q For sections 2, 3, & 9 only. |
\&.\e\*q .Sh ENVIRONMENT |
\&.\e\*q .Sh ENVIRONMENT |
|
\&.\e\*q For sections 1, 6, 7, & 8 only. |
\&.\e\*q .Sh FILES |
\&.\e\*q .Sh FILES |
|
\&.\e\*q .Sh EXIT STATUS |
|
\&.\e\*q For sections 1, 6, & 8 only. |
\&.\e\*q .Sh EXAMPLES |
\&.\e\*q .Sh EXAMPLES |
\&.\e\*q The next is for sections 1, 4, 6, 7, & 8 only. |
|
\&.\e\*q .Sh DIAGNOSTICS |
\&.\e\*q .Sh DIAGNOSTICS |
\&.\e\*q The next is for sections 2, 3, & 9 only. |
\&.\e\*q For sections 1, 4, 6, 7, & 8 only. |
\&.\e\*q .Sh ERRORS |
\&.\e\*q .Sh ERRORS |
|
\&.\e\*q For sections 2, 3, & 9 only. |
\&.\e\*q .Sh SEE ALSO |
\&.\e\*q .Sh SEE ALSO |
\&.\e\*q .Xr foobar 1 |
\&.\e\*q .Xr foobar 1 |
\&.\e\*q .Sh STANDARDS |
\&.\e\*q .Sh STANDARDS |
Line 363 utility processes files ... |
|
Line 339 utility processes files ... |
|
\&.\e\*q .Sh CAVEATS |
\&.\e\*q .Sh CAVEATS |
\&.\e\*q .Sh BUGS |
\&.\e\*q .Sh BUGS |
\&.\e\*q .Sh SECURITY CONSIDERATIONS |
\&.\e\*q .Sh SECURITY CONSIDERATIONS |
|
\&.\e\*q Not used in OpenBSD. |
.Ed |
.Ed |
.Pp |
.Pp |
The sections in a |
The sections in an |
.Nm |
.Nm |
document are conventionally ordered as they appear above. Sections |
document are conventionally ordered as they appear above. |
should be composed as follows: |
Sections should be composed as follows: |
.Bl -ohang -offset Ds |
.Bl -ohang -offset Ds |
.It Em NAME |
.It Em NAME |
The name(s) and a short description of the documented material. The |
The name(s) and a one line description of the documented material. |
syntax for this as follows: |
The syntax for this as follows: |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Nm name0 |
\&.Nm name0 , |
\&.Nm name1 |
\&.Nm name1 , |
\&.Nm name2 |
\&.Nm name2 |
\&.Nd a short description |
\&.Nd a one line description |
.Ed |
.Ed |
.Pp |
.Pp |
|
Multiple |
|
.Sq \&Nm |
|
names should be separated by commas. |
|
.Pp |
The |
The |
.Sx \&Nm |
.Sx \&Nm |
macro(s) must precede the |
macro(s) must precede the |
|
|
.Sx \&Nd . |
.Sx \&Nd . |
.It Em LIBRARY |
.It Em LIBRARY |
The name of the library containing the documented material, which is |
The name of the library containing the documented material, which is |
assumed to be a function in a section 2 or 3 manual. The syntax for |
assumed to be a function in a section 2, 3, or 9 manual. |
this is as follows: |
The syntax for this is as follows: |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Lb libarm |
\&.Lb libarm |
.Ed |
.Ed |
|
|
For the first, utilities (sections 1, 6, and 8), this is |
For the first, utilities (sections 1, 6, and 8), this is |
generally structured as follows: |
generally structured as follows: |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Nm foo |
\&.Nm bar |
\&.Op Fl v |
\&.Op Fl v |
\&.Op Fl o Ar file |
\&.Op Fl o Ar file |
\&.Op Ar |
\&.Op Ar |
\&.Nm bar |
\&.Nm foo |
\&.Op Fl v |
\&.Op Fl v |
\&.Op Fl o Ar file |
\&.Op Fl o Ar file |
\&.Op Ar |
\&.Op Ar |
.Ed |
.Ed |
.Pp |
.Pp |
|
Commands should be ordered alphabetically. |
|
.Pp |
For the second, function calls (sections 2, 3, 9): |
For the second, function calls (sections 2, 3, 9): |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Vt extern const char *global; |
|
\&.In header.h |
\&.In header.h |
|
\&.Vt extern const char *global; |
\&.Ft "char *" |
\&.Ft "char *" |
\&.Fn foo "const char *src" |
\&.Fn foo "const char *src" |
\&.Ft "char *" |
\&.Ft "char *" |
\&.Fn bar "const char *src" |
\&.Fn bar "const char *src" |
.Ed |
.Ed |
.Pp |
.Pp |
|
Ordering of |
|
.Sx \&In , |
|
.Sx \&Vt , |
|
.Sx \&Fn , |
|
and |
|
.Sx \&Fo |
|
macros should follow C header-file conventions. |
|
.Pp |
And for the third, configurations (section 4): |
And for the third, configurations (section 4): |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Cd \*qit* at isa? port 0x2e\*q |
\&.Cd \*qit* at isa? port 0x2e\*q |
Line 436 And for the third, configurations (section 4): |
|
Line 427 And for the third, configurations (section 4): |
|
Manuals not in these sections generally don't need a |
Manuals not in these sections generally don't need a |
.Em SYNOPSIS . |
.Em SYNOPSIS . |
.Pp |
.Pp |
See |
Some macros are displayed differently in the |
.Sx \&Op , |
.Em SYNOPSIS |
|
section, particularly |
|
.Sx \&Nm , |
.Sx \&Cd , |
.Sx \&Cd , |
|
.Sx \&Fd , |
.Sx \&Fn , |
.Sx \&Fn , |
.Sx \&Ft , |
.Sx \&Fo , |
|
.Sx \&In , |
|
.Sx \&Vt , |
and |
and |
.Sx \&Vt . |
.Sx \&Ft . |
|
All of these macros are output on their own line. |
|
If two such dissimilar macros are pairwise invoked (except for |
|
.Sx \&Ft |
|
before |
|
.Sx \&Fo |
|
or |
|
.Sx \&Fn ) , |
|
they are separated by a vertical space, unless in the case of |
|
.Sx \&Fo , |
|
.Sx \&Fn , |
|
and |
|
.Sx \&Ft , |
|
which are always separated by vertical space. |
|
.Pp |
|
When text and macros following an |
|
.Sx \&Nm |
|
macro starting an input line span multiple output lines, |
|
all output lines but the first will be indented to align |
|
with the text immediately following the |
|
.Sx \&Nm |
|
macro, up to the next |
|
.Sx \&Nm , |
|
.Sx \&Sh , |
|
or |
|
.Sx \&Ss |
|
macro or the end of an enclosing block, whichever comes first. |
.It Em DESCRIPTION |
.It Em DESCRIPTION |
This expands upon the brief, one-line description in |
This begins with an expansion of the brief, one line description in |
.Em NAME . |
.Em NAME : |
It usually contains a break-down of the options (if documenting a |
.Bd -literal -offset indent |
|
The |
|
\&.Nm |
|
utility does this, that, and the other. |
|
.Ed |
|
.Pp |
|
It usually follows with a breakdown of the options (if documenting a |
command), such as: |
command), such as: |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
The arguments are as follows: |
The arguments are as follows: |
Line 458 Print verbose information. |
|
Line 486 Print verbose information. |
|
.Pp |
.Pp |
Manuals not documenting a command won't include the above fragment. |
Manuals not documenting a command won't include the above fragment. |
.It Em IMPLEMENTATION NOTES |
.It Em IMPLEMENTATION NOTES |
Implementation-specific notes should be kept here. This is useful when |
Implementation-specific notes should be kept here. |
implementing standard functions that may have side effects or notable |
This is useful when implementing standard functions that may have side |
algorithmic implications. |
effects or notable algorithmic implications. |
.It Em EXIT STATUS |
|
Command exit status for section 1, 6, and 8 manuals. This section is |
|
the dual of |
|
.Em RETURN VALUES , |
|
which is used for functions. Historically, this information was |
|
described in |
|
.Em DIAGNOSTICS , |
|
a practise that is now discouraged. |
|
.Pp |
|
See |
|
.Sx \&Ex . |
|
.It Em RETURN VALUES |
.It Em RETURN VALUES |
This section is the dual of |
This section documents the |
.Em EXIT STATUS , |
return values of functions in sections 2, 3, and 9. |
which is used for commands. It documents the return values of functions |
|
in sections 2, 3, and 9. |
|
.Pp |
.Pp |
See |
See |
.Sx \&Rv . |
.Sx \&Rv . |
.It Em ENVIRONMENT |
.It Em ENVIRONMENT |
Documents any usages of environment variables, e.g., |
Lists the environment variables used by the utility, |
.Xr environ 7 . |
and explains the syntax and semantics of their values. |
|
The |
|
.Xr environ 7 |
|
manual provides examples of typical content and formatting. |
.Pp |
.Pp |
See |
See |
.Sx \&Ev . |
.Sx \&Ev . |
.It Em FILES |
.It Em FILES |
Documents files used. It's helpful to document both the file and a |
Documents files used. |
short description of how the file is used (created, modified, etc.). |
It's helpful to document both the file name and a short description of how |
|
the file is used (created, modified, etc.). |
.Pp |
.Pp |
See |
See |
.Sx \&Pa . |
.Sx \&Pa . |
|
.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. |
|
.Pp |
|
See |
|
.Sx \&Ex . |
.It Em EXAMPLES |
.It Em EXAMPLES |
Example usages. This often contains snippets of well-formed, |
Example usages. |
well-tested invocations. Make doubly sure that your examples work |
This often contains snippets of well-formed, well-tested invocations. |
properly! |
Make sure that examples work properly! |
.It Em DIAGNOSTICS |
.It Em DIAGNOSTICS |
Documents error conditions. This is most useful in section 4 manuals. |
Documents error conditions. |
|
This is most useful in section 4 manuals. |
Historically, this section was used in place of |
Historically, this section was used in place of |
.Em EXIT STATUS |
.Em EXIT STATUS |
for manuals in sections 1, 6, and 8; however, this practise is |
for manuals in sections 1, 6, and 8; however, this practise is |
Line 512 Documents error handling in sections 2, 3, and 9. |
|
Line 541 Documents error handling in sections 2, 3, and 9. |
|
See |
See |
.Sx \&Er . |
.Sx \&Er . |
.It Em SEE ALSO |
.It Em SEE ALSO |
References other manuals with related topics. This section should exist |
References other manuals with related topics. |
for most manuals. Cross-references should conventionally be ordered |
This section should exist for most manuals. |
first by section, then alphabetically. |
Cross-references should conventionally be ordered first by section, then |
|
alphabetically. |
.Pp |
.Pp |
See |
See |
.Sx \&Xr . |
.Sx \&Xr . |
.It Em STANDARDS |
.It Em STANDARDS |
References any standards implemented or used. If not adhering to any |
References any standards implemented or used. |
standards, the |
If not adhering to any standards, the |
.Em HISTORY |
.Em HISTORY |
section should be used instead. |
section should be used instead. |
.Pp |
.Pp |
See |
See |
.Sx \&St . |
.Sx \&St . |
.It Em HISTORY |
.It Em HISTORY |
The history of any manual without a |
A brief history of the subject, including where support first appeared. |
.Em STANDARDS |
|
section should be described in this section. |
|
.It Em AUTHORS |
.It Em AUTHORS |
Credits to authors, if applicable, should appear in this section. |
Credits to the person or persons who wrote the code and/or documentation. |
Authors should generally be noted by both name and an e-mail address. |
Authors should generally be noted by both name and email address. |
.Pp |
.Pp |
See |
See |
.Sx \&An . |
.Sx \&An . |
.It Em CAVEATS |
.It Em CAVEATS |
Explanations of common misuses and misunderstandings should be explained |
Common misuses and misunderstandings should be explained |
in this section. |
in this section. |
.It Em BUGS |
.It Em BUGS |
Extant bugs should be described in this section. |
Known bugs, limitations, and work-arounds should be described |
|
in this section. |
.It Em SECURITY CONSIDERATIONS |
.It Em SECURITY CONSIDERATIONS |
Documents any security precautions that operators should consider. |
Documents any security precautions that operators should consider. |
.El |
.El |
.Sh MACRO SYNTAX |
.Sh MACRO SYNTAX |
Macros are one to three three characters in length and begin with a |
Macros are one to three three characters in length and begin with a |
control character , |
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 |
An arbitrary amount of whitespace may sit between the control character |
following are equivalent: |
and the macro name. |
|
Thus, the following are equivalent: |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Pp |
\&.Pp |
\&.\ \ \ \&Pp |
\&.\ \ \ \&Pp |
.Ed |
.Ed |
.Pp |
.Pp |
The syntax of a macro depends on its classification. In this section, |
The syntax of a macro depends on its classification. |
|
In this section, |
.Sq \-arg |
.Sq \-arg |
refers to macro arguments, which may be followed by zero or more |
refers to macro arguments, which may be followed by zero or more |
.Sq parm |
.Sq parm |
|
|
.Pp |
.Pp |
The |
The |
.Em Callable |
.Em Callable |
column indicates that the macro may be called subsequent to the initial |
column indicates that the macro may also be called by passing its name |
line-macro. If a macro is not callable, then its invocation after the |
as an argument to another macro. |
initial line macro is interpreted as opaque text, such that |
If a macro is not callable but its name appears as an argument |
|
to another macro, it is interpreted as opaque text. |
|
For example, |
.Sq \&.Fl \&Sh |
.Sq \&.Fl \&Sh |
produces |
produces |
.Sq Fl \&Sh . |
.Sq Fl \&Sh . |
.Pp |
.Pp |
The |
The |
.Em Parsable |
.Em Parsed |
column indicates whether the macro may be followed by further |
column indicates whether the macro may call other macros by receiving |
(ostensibly callable) macros. If a macro is not parsable, subsequent |
their names as arguments. |
macro invocations on the line will be interpreted as opaque text. |
If a macro is not parsed but the name of another macro appears |
|
as an argument, it is interpreted as opaque text. |
.Pp |
.Pp |
The |
The |
.Em Scope |
.Em Scope |
column, if applicable, describes closure rules. |
column, if applicable, describes closure rules. |
.Ss Block full-explicit |
.Ss Block full-explicit |
Multi-line scope closed by an explicit closing macro. All macros |
Multi-line scope closed by an explicit closing macro. |
contains bodies; only |
All macros contains bodies; only |
.Sx \&Bf |
.Sx \&Bf |
contains a head. |
and |
|
.Pq optionally |
|
.Sx \&Bl |
|
contain a head. |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB |
\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB |
\(lBbody...\(rB |
\(lBbody...\(rB |
\&.Yc |
\&.Yc |
.Ed |
.Ed |
.Pp |
.Pp |
.Bl -column -compact -offset indent "MacroX" "CallableX" "ParsableX" "closed by XXX" |
.Bl -column -compact -offset indent "MacroX" "CallableX" "ParsedX" "closed by XXX" |
.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope |
.It Em Macro Ta Em Callable Ta Em Parsed Ta Em Scope |
.It Sx \&Bd Ta \&No Ta \&No Ta closed by Sx \&Ed |
.It Sx \&Bd Ta \&No Ta \&No Ta closed by Sx \&Ed |
.It Sx \&Bf Ta \&No Ta \&No Ta closed by Sx \&Ef |
.It Sx \&Bf Ta \&No Ta \&No Ta closed by Sx \&Ef |
.It Sx \&Bk Ta \&No Ta \&No Ta closed by Sx \&Ek |
.It Sx \&Bk Ta \&No Ta \&No Ta closed by Sx \&Ek |
Line 618 All macros have bodies; some |
|
Line 655 All macros have bodies; some |
|
.Pc |
.Pc |
don't have heads; only one |
don't have heads; only one |
.Po |
.Po |
.Sx \&It Fl column |
.Sx \&It |
|
in |
|
.Sx \&Bl Fl column |
.Pc |
.Pc |
has multiple heads. |
has multiple heads. |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
Line 626 has multiple heads. |
|
Line 665 has multiple heads. |
|
\(lBbody...\(rB |
\(lBbody...\(rB |
.Ed |
.Ed |
.Pp |
.Pp |
.Bl -column -compact -offset indent "MacroX" "CallableX" "ParsableX" "closed by XXXXXXXXXXX" |
.Bl -column -compact -offset indent "MacroX" "CallableX" "ParsedX" "closed by XXXXXXXXXXX" |
.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope |
.It Em Macro Ta Em Callable Ta Em Parsed Ta Em Scope |
.It Sx \&It Ta \&No Ta Yes Ta closed by Sx \&It , Sx \&El |
.It Sx \&It Ta \&No Ta Yes Ta closed by Sx \&It , Sx \&El |
.It Sx \&Nd Ta \&No Ta \&No Ta closed by Sx \&Sh |
.It Sx \&Nd Ta \&No Ta \&No Ta closed by Sx \&Sh |
|
.It Sx \&Nm Ta \&No Ta Yes Ta closed by Sx \&Nm , Sx \&Sh , Sx \&Ss |
.It Sx \&Sh Ta \&No Ta \&No Ta closed by Sx \&Sh |
.It Sx \&Sh Ta \&No Ta \&No Ta closed by Sx \&Sh |
.It Sx \&Ss Ta \&No Ta \&No Ta closed by Sx \&Sh , Sx \&Ss |
.It Sx \&Ss Ta \&No Ta \&No Ta closed by Sx \&Sh , Sx \&Ss |
.El |
.El |
|
.Pp |
|
Note that the |
|
.Sx \&Nm |
|
macro is a |
|
.Sx Block full-implicit |
|
macro only when invoked as the first macro |
|
in a |
|
.Em SYNOPSIS |
|
section line, else it is |
|
.Sx In-line . |
.Ss Block partial-explicit |
.Ss Block partial-explicit |
Like block full-explicit, but also with single-line scope. Each |
Like block full-explicit, but also with single-line scope. |
has at least a body and, in limited circumstances, a head |
Each has at least a body and, in limited circumstances, a head |
.Po |
.Po |
.Sx \&Fo , |
.Sx \&Fo , |
.Sx \&Eo |
.Sx \&Eo |
|
|
\(lBbody...\(rB \&Yc \(lBtail...\(rB |
\(lBbody...\(rB \&Yc \(lBtail...\(rB |
.Ed |
.Ed |
.Pp |
.Pp |
.Bl -column "MacroX" "CallableX" "ParsableX" "closed by XXXX" -compact -offset indent |
.Bl -column "MacroX" "CallableX" "ParsedX" "closed by XXXX" -compact -offset indent |
.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope |
.It Em Macro Ta Em Callable Ta Em Parsed Ta Em Scope |
.It Sx \&Ac Ta Yes Ta Yes Ta opened by Sx \&Ao |
.It Sx \&Ac Ta Yes Ta Yes Ta opened by Sx \&Ao |
.It Sx \&Ao Ta Yes Ta Yes Ta closed by Sx \&Ac |
.It Sx \&Ao Ta Yes Ta Yes Ta closed by Sx \&Ac |
.It Sx \&Bc Ta Yes Ta Yes Ta closed by Sx \&Bo |
.It Sx \&Bc Ta Yes Ta Yes Ta closed by Sx \&Bo |
|
|
.El |
.El |
.Ss Block partial-implicit |
.Ss Block partial-implicit |
Like block full-implicit, but with single-line scope closed by |
Like block full-implicit, but with single-line scope closed by |
.Sx Reserved Characters |
.Sx Reserved Terms |
or end of line. |
or end of line. |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBbody...\(rB \(lBres...\(rB |
\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBbody...\(rB \(lBres...\(rB |
.Ed |
.Ed |
.Pp |
.Pp |
.Bl -column "MacroX" "CallableX" "ParsableX" -compact -offset indent |
.Bl -column "MacroX" "CallableX" "ParsedX" -compact -offset indent |
.It Em Macro Ta Em Callable Ta Em Parsable |
.It Em Macro Ta Em Callable Ta Em Parsed |
.It Sx \&Aq Ta Yes Ta Yes |
.It Sx \&Aq Ta Yes Ta Yes |
.It Sx \&Bq Ta Yes Ta Yes |
.It Sx \&Bq Ta Yes Ta Yes |
.It Sx \&Brq Ta Yes Ta Yes |
.It Sx \&Brq Ta Yes Ta Yes |
|
|
macro is a |
macro is a |
.Sx Block partial-implicit |
.Sx Block partial-implicit |
only when invoked as the first macro |
only when invoked as the first macro |
in a SYNOPSIS section line, else it is |
in a |
|
.Em SYNOPSIS |
|
section line, else it is |
.Sx In-line . |
.Sx In-line . |
.Ss In-line |
.Ss In-line |
Closed by |
Closed by |
.Sx Reserved Characters , |
.Sx Reserved Terms , |
end of line, fixed argument lengths, and/or subsequent macros. In-line |
end of line, fixed argument lengths, and/or subsequent macros. |
macros have only text children. If a number (or inequality) of |
In-line macros have only text children. |
arguments is |
If a number (or inequality) of arguments is |
.Pq n , |
.Pq n , |
then the macro accepts an arbitrary number of arguments. |
then the macro accepts an arbitrary number of arguments. |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB \(lbres...\(rb |
\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB \(lBres...\(rB |
|
|
\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB Yc... |
\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB Yc... |
|
|
\&.Yo \(lB\-arg \(lBval...\(rB\(rB arg0 arg1 argN |
\&.Yo \(lB\-arg \(lBval...\(rB\(rB arg0 arg1 argN |
.Ed |
.Ed |
.Pp |
.Pp |
.Bl -column "MacroX" "CallableX" "ParsableX" "Arguments" -compact -offset indent |
.Bl -column "MacroX" "CallableX" "ParsedX" "Arguments" -compact -offset indent |
.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Arguments |
.It Em Macro Ta Em Callable Ta Em Parsed Ta Em Arguments |
.It Sx \&%A Ta \&No Ta \&No Ta >0 |
.It Sx \&%A Ta \&No Ta \&No Ta >0 |
.It Sx \&%B Ta \&No Ta \&No Ta >0 |
.It Sx \&%B Ta \&No Ta \&No Ta >0 |
.It Sx \&%C Ta \&No Ta \&No Ta >0 |
.It Sx \&%C Ta \&No Ta \&No Ta >0 |
Line 741 then the macro accepts an arbitrary number of argument |
|
Line 793 then the macro accepts an arbitrary number of argument |
|
.It Sx \&%T Ta \&No Ta \&No Ta >0 |
.It Sx \&%T Ta \&No Ta \&No Ta >0 |
.It Sx \&%U Ta \&No Ta \&No Ta >0 |
.It Sx \&%U Ta \&No Ta \&No Ta >0 |
.It Sx \&%V Ta \&No Ta \&No Ta >0 |
.It Sx \&%V Ta \&No Ta \&No Ta >0 |
.It Sx \&Ad Ta Yes Ta Yes Ta n |
.It Sx \&Ad Ta Yes Ta Yes Ta >0 |
.It Sx \&An Ta Yes Ta Yes Ta n |
.It Sx \&An Ta Yes Ta Yes Ta >0 |
.It Sx \&Ap Ta Yes Ta Yes Ta 0 |
.It Sx \&Ap Ta Yes Ta Yes Ta 0 |
.It Sx \&Ar Ta Yes Ta Yes Ta n |
.It Sx \&Ar Ta Yes Ta Yes Ta n |
.It Sx \&At Ta Yes Ta Yes Ta 1 |
.It Sx \&At Ta Yes Ta Yes Ta 1 |
Line 750 then the macro accepts an arbitrary number of argument |
|
Line 802 then the macro accepts an arbitrary number of argument |
|
.It Sx \&Bt Ta \&No Ta \&No Ta 0 |
.It Sx \&Bt Ta \&No Ta \&No Ta 0 |
.It Sx \&Bx Ta Yes Ta Yes Ta n |
.It Sx \&Bx Ta Yes Ta Yes Ta n |
.It Sx \&Cd Ta Yes Ta Yes Ta >0 |
.It Sx \&Cd Ta Yes Ta Yes Ta >0 |
.It Sx \&Cm Ta Yes Ta Yes Ta n |
.It Sx \&Cm Ta Yes Ta Yes Ta >0 |
.It Sx \&Db Ta \&No Ta \&No Ta 1 |
.It Sx \&Db Ta \&No Ta \&No Ta 1 |
.It Sx \&Dd Ta \&No Ta \&No Ta >0 |
.It Sx \&Dd Ta \&No Ta \&No Ta n |
.It Sx \&Dt Ta \&No Ta \&No Ta n |
.It Sx \&Dt Ta \&No Ta \&No Ta n |
.It Sx \&Dv Ta Yes Ta Yes Ta n |
.It Sx \&Dv Ta Yes Ta Yes Ta >0 |
.It Sx \&Dx Ta Yes Ta Yes Ta n |
.It Sx \&Dx Ta Yes Ta Yes Ta n |
.It Sx \&Em Ta Yes Ta Yes Ta >0 |
.It Sx \&Em Ta Yes Ta Yes Ta >0 |
.It Sx \&En Ta \&No Ta \&No Ta 0 |
.It Sx \&En Ta \&No Ta \&No Ta 0 |
.It Sx \&Er Ta Yes Ta Yes Ta >0 |
.It Sx \&Er Ta Yes Ta Yes Ta >0 |
.It Sx \&Es Ta \&No Ta \&No Ta 0 |
.It Sx \&Es Ta \&No Ta \&No Ta 0 |
.It Sx \&Ev Ta Yes Ta Yes Ta n |
.It Sx \&Ev Ta Yes Ta Yes Ta >0 |
.It Sx \&Ex Ta \&No Ta \&No Ta n |
.It Sx \&Ex Ta \&No Ta \&No Ta n |
.It Sx \&Fa Ta Yes Ta Yes Ta n |
.It Sx \&Fa Ta Yes Ta Yes Ta >0 |
.It Sx \&Fd Ta \&No Ta \&No Ta >0 |
.It Sx \&Fd Ta \&No Ta \&No Ta >0 |
.It Sx \&Fl Ta Yes Ta Yes Ta n |
.It Sx \&Fl Ta Yes Ta Yes Ta n |
.It Sx \&Fn Ta Yes Ta Yes Ta >0 |
.It Sx \&Fn Ta Yes Ta Yes Ta >0 |
.It Sx \&Fr Ta \&No Ta \&No Ta n |
.It Sx \&Fr Ta \&No Ta \&No Ta n |
.It Sx \&Ft Ta Yes Ta Yes Ta n |
.It Sx \&Ft Ta Yes Ta Yes Ta >0 |
.It Sx \&Fx Ta Yes Ta Yes Ta n |
.It Sx \&Fx Ta Yes Ta Yes Ta n |
.It Sx \&Hf Ta \&No Ta \&No Ta n |
.It Sx \&Hf Ta \&No Ta \&No Ta n |
.It Sx \&Ic Ta Yes Ta Yes Ta >0 |
.It Sx \&Ic Ta Yes Ta Yes Ta >0 |
.It Sx \&In Ta \&No Ta \&No Ta n |
.It Sx \&In Ta \&No Ta \&No Ta 1 |
.It Sx \&Lb Ta \&No Ta \&No Ta 1 |
.It Sx \&Lb Ta \&No Ta \&No Ta 1 |
.It Sx \&Li Ta Yes Ta Yes Ta n |
.It Sx \&Li Ta Yes Ta Yes Ta >0 |
.It Sx \&Lk Ta Yes Ta Yes Ta n |
.It Sx \&Lk Ta Yes Ta Yes Ta >0 |
.It Sx \&Lp Ta \&No Ta \&No Ta 0 |
.It Sx \&Lp Ta \&No Ta \&No Ta 0 |
.It Sx \&Ms Ta Yes Ta Yes Ta >0 |
.It Sx \&Ms Ta Yes Ta Yes Ta >0 |
.It Sx \&Mt Ta Yes Ta Yes Ta >0 |
.It Sx \&Mt Ta Yes Ta Yes Ta >0 |
Line 804 then the macro accepts an arbitrary number of argument |
|
Line 856 then the macro accepts an arbitrary number of argument |
|
.El |
.El |
.Sh REFERENCE |
.Sh REFERENCE |
This section is a canonical reference of all macros, arranged |
This section is a canonical reference of all macros, arranged |
alphabetically. For the scoping of individual macros, see |
alphabetically. |
|
For the scoping of individual macros, see |
.Sx MACRO SYNTAX . |
.Sx MACRO SYNTAX . |
.Ss \&%A |
.Ss \&%A |
Author name of an |
Author name of an |
.Sx \&Rs |
.Sx \&Rs |
block. Multiple authors should each be accorded their own |
block. |
|
Multiple authors should each be accorded their own |
.Sx \%%A |
.Sx \%%A |
line. Author names should be ordered with full or abbreviated |
line. |
forename(s) first, then full surname. |
Author names should be ordered with full or abbreviated forename(s) |
|
first, then full surname. |
.Ss \&%B |
.Ss \&%B |
Book title of an |
Book title of an |
.Sx \&Rs |
.Sx \&Rs |
block. This macro may also be used in a non-bibliographic context when |
block. |
|
This macro may also be used in a non-bibliographic context when |
referring to book titles. |
referring to book titles. |
.Ss \&%C |
.Ss \&%C |
Publication city or location of an |
Publication city or location of an |
.Sx \&Rs |
.Sx \&Rs |
block. |
block. |
.Pp |
|
.Em Remarks : |
|
this macro is not implemented in |
|
.Xr groff 1 . |
|
.Ss \&%D |
.Ss \&%D |
Publication date of an |
Publication date of an |
.Sx \&Rs |
.Sx \&Rs |
block. This should follow the reduced or canonical form syntax |
block. |
described in |
Recommended formats of arguments are |
.Sx Dates . |
.Ar month day , year |
|
or just |
|
.Ar year . |
.Ss \&%I |
.Ss \&%I |
Publisher or issuer name of an |
Publisher or issuer name of an |
.Sx \&Rs |
.Sx \&Rs |
|
|
.Ss \&%Q |
.Ss \&%Q |
Institutional author (school, government, etc.) of an |
Institutional author (school, government, etc.) of an |
.Sx \&Rs |
.Sx \&Rs |
block. Multiple institutional authors should each be accorded their own |
block. |
|
Multiple institutional authors should each be accorded their own |
.Sx \&%Q |
.Sx \&%Q |
line. |
line. |
.Ss \&%R |
.Ss \&%R |
|
|
.Ss \&%T |
.Ss \&%T |
Article title of an |
Article title of an |
.Sx \&Rs |
.Sx \&Rs |
block. This macro may also be used in a non-bibliographical context |
block. |
when referring to article titles. |
This macro may also be used in a non-bibliographical context when |
|
referring to article titles. |
.Ss \&%U |
.Ss \&%U |
URI of reference document. |
URI of reference document. |
.Ss \&%V |
.Ss \&%V |
Line 874 Volume number of an |
|
Line 930 Volume number of an |
|
.Sx \&Rs |
.Sx \&Rs |
block. |
block. |
.Ss \&Ac |
.Ss \&Ac |
Closes an |
Close an |
.Sx \&Ao |
.Sx \&Ao |
block. Does not have any tail arguments. |
block. |
|
Does not have any tail arguments. |
.Ss \&Ad |
.Ss \&Ad |
Address construct: usually in the context of an computational address in |
Memory address. |
memory, not a physical (post) address. |
Do not use this for postal addresses. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Ad [0,$] |
.Dl \&.Ad [0,$] |
.D1 \&.Ad 0x00000000 |
.Dl \&.Ad 0x00000000 |
.Ss \&An |
.Ss \&An |
Author name. This macro may alternatively accepts the following |
Author name. |
arguments, although these may not be specified along with a parameter: |
Requires either the name of an author or one of the following arguments: |
.Bl -tag -width 12n -offset indent |
.Pp |
|
.Bl -tag -width "-nosplitX" -offset indent -compact |
.It Fl split |
.It Fl split |
Renders a line break before each author listing. |
Start a new output line before each subsequent invocation of |
|
.Sx \&An . |
.It Fl nosplit |
.It Fl nosplit |
The opposite of |
The opposite of |
.Fl split . |
.Fl split . |
.El |
.El |
.Pp |
.Pp |
In the AUTHORS section, the default is not to split the first author |
The default is |
listing, but all subsequent author listings, whether or not they're |
.Fl nosplit . |
interspersed by other macros or text, are split. Thus, specifying |
The effect of selecting either of the |
.Fl split |
.Fl split |
will cause the first listing also to be split. If not in the AUTHORS |
modes ends at the beginning of the |
section, the default is not to split. |
.Em AUTHORS |
|
section. |
|
In the |
|
.Em AUTHORS |
|
section, the default is |
|
.Fl nosplit |
|
for the first author listing and |
|
.Fl split |
|
for all other author listings. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.An -nosplit |
.Dl \&.An -nosplit |
.D1 \&.An J. D. Ullman . |
.Dl \&.An Kristaps Dzonsons \&Aq kristaps@bsd.lv |
.Pp |
|
.Em Remarks : |
|
the effects of |
|
.Fl split |
|
or |
|
.Fl nosplit |
|
are re-set when entering the AUTHORS section, so if one specifies |
|
.Sx \&An Fl nosplit |
|
in the general document body, it must be re-specified in the AUTHORS |
|
section. |
|
.Ss \&Ao |
.Ss \&Ao |
Begins a block enclosed by angled brackets. Does not have any head |
Begin a block enclosed by angle brackets. |
arguments. |
Does not have any head arguments. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Fl -key= \&Ns \&Ao \&Ar val \&Ac |
.Dl \&.Fl -key= \&Ns \&Ao \&Ar val \&Ac |
.Pp |
.Pp |
See also |
See also |
.Sx \&Aq . |
.Sx \&Aq . |
.Ss \&Ap |
.Ss \&Ap |
Inserts an apostrophe without any surrounding white-space. This is |
Inserts an apostrophe without any surrounding whitespace. |
generally used as a grammatic device when referring to the verb form of |
This is generally used as a grammatical device when referring to the verb |
a function: |
form of a function. |
.Bd -literal -offset indent |
.Pp |
\&.Fn execve Ap d |
Examples: |
.Ed |
.Dl \&.Fn execve \&Ap d |
.Ss \&Aq |
.Ss \&Aq |
Encloses its arguments in angled brackets. |
Encloses its arguments in angle brackets. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Fl -key= \&Ns \&Aq \&Ar val |
.Dl \&.Fl -key= \&Ns \&Aq \&Ar val |
.Pp |
.Pp |
.Em Remarks : |
.Em Remarks : |
this macro is often abused for rendering URIs, which should instead use |
this macro is often abused for rendering URIs, which should instead use |
Line 950 statements, which should use |
|
Line 1007 statements, which should use |
|
See also |
See also |
.Sx \&Ao . |
.Sx \&Ao . |
.Ss \&Ar |
.Ss \&Ar |
Command arguments. If an argument is not provided, the string |
Command arguments. |
.Dq file ... |
If an argument is not provided, the string |
|
.Dq file ...\& |
is used as a default. |
is used as a default. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Fl o \&Ns \&Ar file1 |
.Dl \&.Fl o \&Ns \&Ar file1 |
.D1 \&.Ar |
.Dl \&.Ar |
.D1 \&.Ar arg1 , arg2 . |
.Dl \&.Ar arg1 , arg2 . |
.Ss \&At |
.Ss \&At |
Formats an AT&T version. Accepts at most one parameter: |
Formats an AT&T version. |
.Bl -tag -width 12n -offset indent |
Accepts one optional argument: |
|
.Pp |
|
.Bl -tag -width "v[1-7] | 32vX" -offset indent -compact |
.It Cm v[1-7] | 32v |
.It Cm v[1-7] | 32v |
A version of |
A version of |
.At . |
.At . |
.It Cm V[.[1-4]]? |
.It Cm V[.[1-4]]? |
A system version of |
A version of |
.At . |
.At V . |
.El |
.El |
.Pp |
.Pp |
Note that these parameters do not begin with a hyphen. |
Note that these arguments do not begin with a hyphen. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.At |
.Dl \&.At |
.D1 \&.At V.1 |
.Dl \&.At V.1 |
.Pp |
.Pp |
See also |
See also |
.Sx \&Bsx , |
.Sx \&Bsx , |
|
|
and |
and |
.Sx \&Ux . |
.Sx \&Ux . |
.Ss \&Bc |
.Ss \&Bc |
Closes a |
Close a |
.Sx \&Bo |
.Sx \&Bo |
block. Does not have any tail arguments. |
block. |
|
Does not have any tail arguments. |
.Ss \&Bd |
.Ss \&Bd |
Begins a display block. A display is collection of macros or text which |
Begin a display block. |
may be collectively offset or justified in a manner different from that |
Its syntax is as follows: |
of the enclosing context. By default, the block is preceded by a |
.Bd -ragged -offset indent |
vertical space. |
.Pf \. Sx \&Bd |
|
.Fl Ns Ar type |
|
.Op Fl offset Ar width |
|
.Op Fl compact |
|
.Ed |
.Pp |
.Pp |
Each display is associated with a type, which must be one of the |
Display blocks are used to select a different indentation and |
following arguments: |
justification than the one used by the surrounding text. |
.Bl -tag -width 12n -offset indent |
They may contain both macro lines and text lines. |
.It Fl ragged |
By default, a display block is preceded by a vertical space. |
Only left-justify the block. |
.Pp |
.It Fl unfilled |
The |
Do not justify the block at all. |
.Ar type |
|
must be one of the following: |
|
.Bl -tag -width 13n -offset indent |
|
.It Fl centered |
|
Centre-justify each line. |
|
Using this display type is not recommended; many |
|
.Nm |
|
implementations render it poorly. |
.It Fl filled |
.It Fl filled |
Left- and right-justify the block. |
Left- and right-justify the block. |
.It Fl literal |
.It Fl literal |
Alias for |
Do not justify the block at all. |
.Fl unfilled . |
Preserve white space as it appears in the input. |
.It Fl centered |
.It Fl ragged |
Centre-justify each line. |
Only left-justify the block. |
|
.It Fl unfilled |
|
An alias for |
|
.Fl literal . |
.El |
.El |
.Pp |
.Pp |
The type must be provided first. Secondary arguments are as follows: |
The |
.Bl -tag -width 12n -offset indent |
.Ar type |
|
must be provided first. |
|
Additional arguments may follow: |
|
.Bl -tag -width 13n -offset indent |
.It Fl offset Ar width |
.It Fl offset Ar width |
Offset by the value of |
Indent the display by the |
.Ar width , |
.Ar width , |
which is interpreted as one of the following, specified in order: |
which may be one of the following: |
.Bl -item |
.Bl -item |
.It |
.It |
As one of the pre-defined strings |
One of the pre-defined strings |
.Ar indent , |
.Cm indent , |
the width of standard indentation; |
the width of standard indentation; |
.Ar indent-two , |
.Cm indent-two , |
twice |
twice |
.Ar indent ; |
.Cm indent ; |
.Ar left , |
.Cm left , |
which has no effect ; |
which has no effect; |
.Ar right , |
.Cm right , |
which justifies to the right margin; and |
which justifies to the right margin; or |
.Ar center , |
.Cm center , |
which aligns around an imagined centre axis. |
which aligns around an imagined centre axis. |
.It |
.It |
As a precalculated width for a named macro. The most popular is the |
A macro invocation, which selects a predefined width |
imaginary macro |
associated with that macro. |
|
The most popular is the imaginary macro |
.Ar \&Ds , |
.Ar \&Ds , |
which resolves to |
which resolves to |
.Ar 6n . |
.Sy 6n . |
.It |
.It |
As a scaling unit following the syntax described in |
A width using the syntax described in |
.Sx Scaling Widths . |
.Sx Scaling Widths . |
.It |
.It |
As the calculated string length of the opaque string. |
An arbitrary string, which indents by the length of this string. |
.El |
.El |
.Pp |
.Pp |
If unset, it will revert to the value of |
When the argument is missing, |
.Ar 8n |
.Fl offset |
as described in |
is ignored. |
.Sx Scaling Widths . |
|
.It Fl compact |
.It Fl compact |
Do not assert a vertical space before the block. |
Do not assert vertical space before the display. |
.It Fl file Ar file |
|
Prepend the file |
|
.Ar file |
|
before any text or macros within the block. |
|
.El |
.El |
.Pp |
.Pp |
Examples: |
Examples: |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Bd \-unfilled \-offset two-indent \-compact |
\&.Bd \-literal \-offset indent \-compact |
Hello world. |
Hello world. |
\&.Ed |
\&.Ed |
.Ed |
.Ed |
|
|
and |
and |
.Sx \&Dl . |
.Sx \&Dl . |
.Ss \&Bf |
.Ss \&Bf |
|
Change the font mode for a scoped block of text. |
|
Its syntax is as follows: |
|
.Bd -ragged -offset indent |
|
.Pf \. Sx \&Bf |
|
.Oo |
|
.Fl emphasis | literal | symbolic | |
|
.Cm \&Em | \&Li | \&Sy |
|
.Oc |
|
.Ed |
|
.Pp |
|
The |
|
.Fl emphasis |
|
and |
|
.Cm \&Em |
|
argument are equivalent, as are |
|
.Fl symbolic |
|
and |
|
.Cm \&Sy , |
|
and |
|
.Fl literal |
|
and |
|
.Cm \&Li . |
|
Without an argument, this macro does nothing. |
|
The font mode continues until broken by a new font mode in a nested |
|
scope or |
|
.Sx \&Ef |
|
is encountered. |
|
.Pp |
|
See also |
|
.Sx \&Li , |
|
.Sx \&Ef , |
|
.Sx \&Em , |
|
and |
|
.Sx \&Sy . |
.Ss \&Bk |
.Ss \&Bk |
|
For each macro, keep its output together on the same output line, |
|
until the end of the macro or the end of the input line is reached, |
|
whichever comes first. |
|
Line breaks in text lines are unaffected. |
|
The syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Bk Fl words |
|
.Pp |
|
The |
|
.Fl words |
|
argument is required; additional arguments are ignored. |
|
.Pp |
|
The following example will not break within each |
|
.Sx \&Op |
|
macro line: |
|
.Bd -literal -offset indent |
|
\&.Bk \-words |
|
\&.Op Fl f Ar flags |
|
\&.Op Fl o Ar output |
|
\&.Ek |
|
.Ed |
|
.Pp |
|
Be careful in using over-long lines within a keep block! |
|
Doing so will clobber the right margin. |
.Ss \&Bl |
.Ss \&Bl |
.\" Begins a list composed of one or more list entries. A list entry is |
Begin a list. |
.\" specified by the |
Lists consist of items specified using the |
.\" .Sx \&It |
.Sx \&It |
.\" macro, which consists of a head and optional body. By default, a list |
macro, containing a head or a body or both. |
.\" is preceded by a blank line. A list must specify one of the following |
The list syntax is as follows: |
.\" list types: |
.Bd -ragged -offset indent |
.\" .Bl -tag -width 12n |
.Pf \. Sx \&Bl |
.\" .It Fl bullet |
.Fl Ns Ar type |
.\" A list offset by a bullet. The head of list entries must be empty. |
.Op Fl width Ar val |
.\" List entry bodies are justified after the bullet. |
.Op Fl offset Ar val |
.\" .It Fl column |
.Op Fl compact |
.\" A columnated list. The number of columns is specified as arguments to |
.Op HEAD ... |
.\" the |
.Ed |
.\" .Sx \&Bl |
.Pp |
.\" macro (the deprecated form of following the invocation of |
The list |
.\" .Fl column |
.Ar type |
.\" is also accepted). Arguments dictate the width of columns specified in |
is mandatory and must be specified first. |
.\" list entries. List entry bodies must be left empty. Columns specified |
The |
.\" in the list entry head are justified to their position in the sequence |
.Fl width |
.\" of columns. |
and |
.\" .It Fl dash |
.Fl offset |
.\" A list offset by a dash (hyphen). The head of list entries must be |
arguments accept |
.\" empty. List entry bodies are justified past the dash. |
.Sx Scaling Widths |
.\" .It Fl diag |
or use the length of the given string. |
.\" Like |
The |
.\" .Fl inset |
.Fl offset |
.\" lists, but with additional formatting to the head. |
is a global indentation for the whole list, affecting both item heads |
.\" .It Fl enum |
and bodies. |
.\" A list offset by a number indicating list entry position. The head of |
For those list types supporting it, the |
.\" list entries must be empty. List entry bodies are justified past the |
.Fl width |
.\" enumeration. |
argument requests an additional indentation of item bodies, |
.\" .It Fl hang |
to be added to the |
.\" Like |
.Fl offset . |
.\" .Fl tag , |
Unless the |
.\" but instead of list bodies justifying to the head on the first line, |
.Fl compact |
.\" they trail the head text. |
argument is specified, list entries are separated by vertical space. |
.\" .It Fl hyphen |
.Pp |
.\" Synonym for |
A list must specify one of the following list types: |
.\" .Fl dash . |
.Bl -tag -width 12n -offset indent |
.\" .It Fl inset |
.It Fl bullet |
.\" Like |
No item heads can be specified, but a bullet will be printed at the head |
.\" .Fl tag , |
of each item. |
.\" but list entry bodies aren't justified. |
Item bodies start on the same output line as the bullet |
.\" .It Fl item |
and are indented according to the |
.\" An un-justified list. This produces blocks of text. |
.Fl width |
.\" .It Fl ohang |
argument. |
.\" List bodies are placed on the line following the head. |
.It Fl column |
.\" .It Fl tag |
A columnated list. |
.\" A list offset by list entry heads. List entry bodies are justified |
The |
.\" after the head. |
.Fl width |
.\" .El |
argument has no effect; instead, each argument specifies the width |
.\" .Pp |
of one column, using either the |
.\" More... |
.Sx Scaling Widths |
.\" . |
syntax or the string length of the argument. |
|
If the first line of the body of a |
|
.Fl column |
|
list is not an |
|
.Sx \&It |
|
macro line, |
|
.Sx \&It |
|
contexts spanning one input line each are implied until an |
|
.Sx \&It |
|
macro line is encountered, at which point items start being interpreted as |
|
described in the |
|
.Sx \&It |
|
documentation. |
|
.It Fl dash |
|
Like |
|
.Fl bullet , |
|
except that dashes are used in place of bullets. |
|
.It Fl diag |
|
Like |
|
.Fl inset , |
|
except that item heads are not parsed for macro invocations. |
|
.\" but with additional formatting to the head. |
|
.It Fl enum |
|
A numbered list. |
|
Formatted like |
|
.Fl bullet , |
|
except that cardinal numbers are used in place of bullets, |
|
starting at 1. |
|
.It Fl hang |
|
Like |
|
.Fl tag , |
|
except that the first lines of item bodies are not indented, but follow |
|
the item heads like in |
|
.Fl inset |
|
lists. |
|
.It Fl hyphen |
|
Synonym for |
|
.Fl dash . |
|
.It Fl inset |
|
Item bodies follow items heads on the same line, using normal inter-word |
|
spacing. |
|
Bodies are not indented, and the |
|
.Fl width |
|
argument is ignored. |
|
.It Fl item |
|
No item heads can be specified, and none are printed. |
|
Bodies are not indented, and the |
|
.Fl width |
|
argument is ignored. |
|
.It Fl ohang |
|
Item bodies start on the line following item heads and are not indented. |
|
The |
|
.Fl width |
|
argument is ignored. |
|
.It Fl tag |
|
Item bodies are indented according to the |
|
.Fl width |
|
argument. |
|
When an item head fits inside the indentation, the item body follows |
|
this head on the same output line. |
|
Otherwise, the body starts on the output line following the head. |
|
.El |
|
.Pp |
|
See also |
|
.Sx \&El |
|
and |
|
.Sx \&It . |
.Ss \&Bo |
.Ss \&Bo |
Begins a block enclosed by square brackets. Does not have any head |
Begin a block enclosed by square brackets. |
arguments. |
Does not have any head arguments. |
.Pp |
.Pp |
Examples: |
Examples: |
.Bd -literal -offset indent |
.Bd -literal -offset indent -compact |
\&.Bo 1 , |
\&.Bo 1 , |
\&.Dv BUFSIZ \&Bc |
\&.Dv BUFSIZ \&Bc |
.Ed |
.Ed |
|
|
Encloses its arguments in square brackets. |
Encloses its arguments in square brackets. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Bq 1 , \&Dv BUFSIZ |
.Dl \&.Bq 1 , \&Dv BUFSIZ |
.Pp |
.Pp |
.Em Remarks : |
.Em Remarks : |
this macro is sometimes abused to emulate optional arguments for |
this macro is sometimes abused to emulate optional arguments for |
|
|
See also |
See also |
.Sx \&Bo . |
.Sx \&Bo . |
.Ss \&Brc |
.Ss \&Brc |
Closes a |
Close a |
.Sx \&Bro |
.Sx \&Bro |
block. Does not have any tail arguments. |
block. |
|
Does not have any tail arguments. |
.Ss \&Bro |
.Ss \&Bro |
Begins a block enclosed by curly braces. Does not have any head |
Begin a block enclosed by curly braces. |
arguments. |
Does not have any head arguments. |
.Pp |
.Pp |
Examples: |
Examples: |
.Bd -literal -offset indent |
.Bd -literal -offset indent -compact |
\&.Bro 1 , ... , |
\&.Bro 1 , ... , |
\&.Va n \&Brc |
\&.Va n \&Brc |
.Ed |
.Ed |
|
|
Encloses its arguments in curly braces. |
Encloses its arguments in curly braces. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Brq 1 , ... , \&Va n |
.Dl \&.Brq 1 , ... , \&Va n |
.Pp |
.Pp |
See also |
See also |
.Sx \&Bro . |
.Sx \&Bro . |
Line 1180 Format the BSD/OS version provided as an argument, or |
|
Line 1379 Format the BSD/OS version provided as an argument, or |
|
no argument is provided. |
no argument is provided. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Bsx 1.0 |
.Dl \&.Bsx 1.0 |
.D1 \&.Bsx |
.Dl \&.Bsx |
.Pp |
.Pp |
See also |
See also |
.Sx \&At , |
.Sx \&At , |
|
|
.Sx \&Ux . |
.Sx \&Ux . |
.Ss \&Bt |
.Ss \&Bt |
Prints |
Prints |
.Dq is currently in beta test. |
.Dq is currently in beta test . |
.Ss \&Bx |
.Ss \&Bx |
Format the BSD version provided as an argument, or a default value if no |
Format the BSD version provided as an argument, or a default value if no |
argument is provided. |
argument is provided. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Bx 4.4 |
.Dl \&.Bx 4.4 |
.D1 \&.Bx |
.Dl \&.Bx |
.Pp |
.Pp |
See also |
See also |
.Sx \&At , |
.Sx \&At , |
|
|
and |
and |
.Sx \&Ux . |
.Sx \&Ux . |
.Ss \&Cd |
.Ss \&Cd |
Configuration declaration. This denotes strings accepted by |
Kernel configuration declaration. |
|
This denotes strings accepted by |
.Xr config 8 . |
.Xr config 8 . |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Cd device le0 at scode? |
.Dl \&.Cd device le0 at scode? |
.Pp |
.Pp |
.Em Remarks : |
.Em Remarks : |
this macro is commonly abused by using quoted literals to retain |
this macro is commonly abused by using quoted literals to retain |
white-space and align consecutive |
whitespace and align consecutive |
.Sx \&Cd |
.Sx \&Cd |
declarations. This practise is discouraged. |
declarations. |
|
This practise is discouraged. |
.Ss \&Cm |
.Ss \&Cm |
Command modifiers. Useful when specifying configuration options or |
Command modifiers. |
keys. |
Useful when specifying configuration options or keys. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Cm ControlPath |
.Dl \&.Cm ControlPath |
.D1 \&.Cm ControlMaster |
.Dl \&.Cm ControlMaster |
.Pp |
.Pp |
See also |
See also |
.Sx \&Fl . |
.Sx \&Fl . |
.Ss \&D1 |
.Ss \&D1 |
One-line indented display. This is formatted by the default rules and |
One-line indented display. |
is useful for simple indented statements. It is followed by a newline. |
This is formatted by the default rules and is useful for simple indented |
|
statements. |
|
It is followed by a newline. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.D1 \&Fl abcdefgh |
.Dl \&.D1 \&Fl abcdefgh |
.Pp |
.Pp |
See also |
See also |
.Sx \&Bd |
.Sx \&Bd |
and |
and |
.Sx \&Dl . |
.Sx \&Dl . |
.Ss \&Db |
.Ss \&Db |
|
Switch debugging mode. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Db Cm on | off |
|
.Pp |
|
This macro is ignored by |
|
.Xr mandoc 1 . |
.Ss \&Dc |
.Ss \&Dc |
Closes a |
Close a |
.Sx \&Do |
.Sx \&Do |
block. Does not have any tail arguments. |
block. |
|
Does not have any tail arguments. |
.Ss \&Dd |
.Ss \&Dd |
Document date. This is the mandatory first macro of any |
Document date. |
|
This is the mandatory first macro of any |
.Nm |
.Nm |
manual. Its calling syntax is as follows: |
manual. |
|
Its syntax is as follows: |
.Pp |
.Pp |
.D1 \. Ns Sx \&Dd Cm date |
.D1 Pf \. Sx \&Dd Ar month day , year |
.Pp |
.Pp |
The |
The |
.Cm date |
.Ar month |
field may be either |
is the full English month name, the |
.Ar $\&Mdocdate$ , |
.Ar day |
which signifies the current manual revision date dictated by |
is an optionally zero-padded numeral, and the |
|
.Ar year |
|
is the full four-digit year. |
|
.Pp |
|
Other arguments are not portable; the |
|
.Xr mandoc 1 |
|
utility handles them as follows: |
|
.Bl -dash -offset 3n -compact |
|
.It |
|
To have the date automatically filled in by the |
|
.Ox |
|
version of |
.Xr cvs 1 , |
.Xr cvs 1 , |
or instead a valid canonical date as specified by |
the special string |
.Sx Dates . |
.Dq $\&Mdocdate$ |
If a date does not conform, the current date is used instead. |
can be given as an argument. |
|
.It |
|
A few alternative date formats are accepted as well |
|
and converted to the standard form. |
|
.It |
|
If a date string cannot be parsed, it is used verbatim. |
|
.It |
|
If no date string is given, the current date is used. |
|
.El |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Dd $\&Mdocdate$ |
.Dl \&.Dd $\&Mdocdate$ |
.D1 \&.Dd $\&Mdocdate: July 21 2007$ |
.Dl \&.Dd $\&Mdocdate: July 21 2007$ |
.D1 \&.Dd July 21, 2007 |
.Dl \&.Dd July 21, 2007 |
.Pp |
.Pp |
See also |
See also |
.Sx \&Dt |
.Sx \&Dt |
and |
and |
.Sx \&Os . |
.Sx \&Os . |
.Ss \&Dl |
.Ss \&Dl |
One-line intended display. This is formatted as literal text and is |
One-line intended display. |
useful for commands and invocations. It is followed by a newline. |
This is formatted as literal text and is useful for commands and |
|
invocations. |
|
It is followed by a newline. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Dl % mandoc mdoc.7 | less |
.Dl \&.Dl % mandoc mdoc.7 \e(ba less |
.Pp |
.Pp |
See also |
See also |
.Sx \&Bd |
.Sx \&Bd |
and |
and |
.Sx \&D1 . |
.Sx \&D1 . |
.Ss \&Do |
.Ss \&Do |
Begins a block enclosed by double quotes. Does not have any head |
Begin a block enclosed by double quotes. |
arguments. |
Does not have any head arguments. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.D1 \&Do April is the cruellest month \&Dc \e(em T.S. Eliot |
.Bd -literal -offset indent -compact |
|
\&.Do |
|
April is the cruellest month |
|
\&.Dc |
|
\e(em T.S. Eliot |
|
.Ed |
.Pp |
.Pp |
See also |
See also |
.Sx \&Dq . |
.Sx \&Dq . |
.Ss \&Dq |
.Ss \&Dq |
Encloses its arguments in double quotes. |
Encloses its arguments in |
|
.Dq typographic |
|
double-quotes. |
.Pp |
.Pp |
Examples: |
Examples: |
.Bd -literal -offset indent -compact |
.Bd -literal -offset indent -compact |
|
|
.Ed |
.Ed |
.Pp |
.Pp |
See also |
See also |
|
.Sx \&Qq , |
|
.Sx \&Sq , |
|
and |
.Sx \&Do . |
.Sx \&Do . |
.Ss \&Dt |
.Ss \&Dt |
Document title. This is the mandatory second macro of any |
Document title. |
|
This is the mandatory second macro of any |
.Nm |
.Nm |
file. Its calling syntax is as follows: |
file. |
|
Its syntax is as follows: |
|
.Bd -ragged -offset indent |
|
.Pf \. Sx \&Dt |
|
.Oo |
|
.Ar title |
|
.Oo |
|
.Ar section |
|
.Op Ar volume | arch |
|
.Oc |
|
.Oc |
|
.Ed |
.Pp |
.Pp |
.D1 \. Ns Sx \&Dt Cm title section Op Cm volume | arch |
|
.Pp |
|
Its arguments are as follows: |
Its arguments are as follows: |
.Bl -tag -width Ds -offset Ds |
.Bl -tag -width Ds -offset Ds |
.It Cm title |
.It Ar title |
The document's title (name). This should be capitalised and is |
The document's title (name), defaulting to |
required. |
.Dq UNKNOWN |
.It Cm section |
if unspecified. |
The manual section. This may be one of |
It should be capitalised. |
|
.It Ar section |
|
The manual section. |
|
This may be one of |
.Ar 1 |
.Ar 1 |
.Pq utilities , |
.Pq utilities , |
.Ar 2 |
.Ar 2 |
Line 1354 The manual section. This may be one of |
|
Line 1611 The manual section. This may be one of |
|
or |
or |
.Ar paper |
.Ar paper |
.Pq paper . |
.Pq paper . |
It is also required and should correspond to the manual's filename |
It should correspond to the manual's filename suffix and defaults to |
suffix. |
.Dq 1 |
.It Cm volume |
if unspecified. |
|
.It Ar volume |
This overrides the volume inferred from |
This overrides the volume inferred from |
.Ar section . |
.Ar section . |
This field is optional, and if specified, must be one of |
This field is optional, and if specified, must be one of |
Line 1385 This field is optional, and if specified, must be one |
|
Line 1643 This field is optional, and if specified, must be one |
|
or |
or |
.Ar CON |
.Ar CON |
.Pq contributed manuals . |
.Pq contributed manuals . |
.It Cm arch |
.It Ar arch |
This specifies a specific relevant architecture. If |
This specifies a specific relevant architecture. |
.Cm volume |
If |
|
.Ar volume |
is not provided, it may be used in its place, else it may be used |
is not provided, it may be used in its place, else it may be used |
subsequent that. It, too, is optional. It must be one of |
subsequent that. |
|
It, too, is optional. |
|
It must be one of |
.Ar alpha , |
.Ar alpha , |
.Ar amd64 , |
.Ar amd64 , |
.Ar amiga , |
.Ar amiga , |
Line 1406 subsequent that. It, too, is optional. It must be on |
|
Line 1667 subsequent that. It, too, is optional. It must be on |
|
.Ar luna88k , |
.Ar luna88k , |
.Ar mac68k , |
.Ar mac68k , |
.Ar macppc , |
.Ar macppc , |
|
.Ar mips64 , |
.Ar mvme68k , |
.Ar mvme68k , |
.Ar mvme88k , |
.Ar mvme88k , |
.Ar mvmeppc , |
.Ar mvmeppc , |
|
|
.El |
.El |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Dt FOO 1 |
.Dl \&.Dt FOO 1 |
.D1 \&.Dt FOO 4 KM |
.Dl \&.Dt FOO 4 KM |
.D1 \&.Dt FOO 9 i386 |
.Dl \&.Dt FOO 9 i386 |
.D1 \&.Dt FOO 9 KM i386 |
|
.Pp |
.Pp |
See also |
See also |
.Sx \&Dd |
.Sx \&Dd |
|
|
Defined variables such as preprocessor constants. |
Defined variables such as preprocessor constants. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Dv BUFSIZ |
.Dl \&.Dv BUFSIZ |
.D1 \&.Dv STDOUT_FILENO |
.Dl \&.Dv STDOUT_FILENO |
.Pp |
.Pp |
See also |
See also |
.Sx \&Er . |
.Sx \&Er . |
Line 1444 Format the DragonFly BSD version provided as an argume |
|
Line 1705 Format the DragonFly BSD version provided as an argume |
|
value if no argument is provided. |
value if no argument is provided. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Dx 2.4.1 |
.Dl \&.Dx 2.4.1 |
.D1 \&.Dx |
.Dl \&.Dx |
.Pp |
.Pp |
See also |
See also |
.Sx \&At , |
.Sx \&At , |
|
|
and |
and |
.Sx \&Ux . |
.Sx \&Ux . |
.Ss \&Ec |
.Ss \&Ec |
|
Close a scope started by |
|
.Sx \&Eo . |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Ec Op Ar TERM |
|
.Pp |
|
The |
|
.Ar TERM |
|
argument is used as the enclosure tail, for example, specifying \e(rq |
|
will emulate |
|
.Sx \&Dc . |
.Ss \&Ed |
.Ss \&Ed |
|
End a display context started by |
|
.Sx \&Bd . |
.Ss \&Ef |
.Ss \&Ef |
|
End a font mode context started by |
|
.Sx \&Bf . |
.Ss \&Ek |
.Ss \&Ek |
|
End a keep context started by |
|
.Sx \&Bk . |
.Ss \&El |
.Ss \&El |
|
End a list context started by |
|
.Sx \&Bl . |
|
.Pp |
|
See also |
|
.Sx \&Bl |
|
and |
|
.Sx \&It . |
.Ss \&Em |
.Ss \&Em |
Denotes text that should be emphasised. Note that this is a |
Denotes text that should be emphasised. |
presentation term and should not be used for stylistically decorating |
Note that this is a presentation term and should not be used for |
technical terms. |
stylistically decorating technical terms. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Em Warnings! |
.Dl \&.Em Warnings! |
.D1 \&.Em Remarks : |
.Dl \&.Em Remarks : |
|
.Pp |
|
See also |
|
.Sx \&Bf , |
|
.Sx \&Sy , |
|
and |
|
.Sx \&Li . |
.Ss \&En |
.Ss \&En |
|
This macro is obsolete and not implemented in |
|
.Xr mandoc 1 . |
.Ss \&Eo |
.Ss \&Eo |
|
An arbitrary enclosure. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Eo Op Ar TERM |
|
.Pp |
|
The |
|
.Ar TERM |
|
argument is used as the enclosure head, for example, specifying \e(lq |
|
will emulate |
|
.Sx \&Do . |
.Ss \&Er |
.Ss \&Er |
Display error constants. |
Display error constants. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Er EPERM |
.Dl \&.Er EPERM |
.D1 \&.Er ENOENT |
.Dl \&.Er ENOENT |
.Pp |
.Pp |
See also |
See also |
.Sx \&Dv . |
.Sx \&Dv . |
.Ss \&Es |
.Ss \&Es |
|
This macro is obsolete and not implemented. |
.Ss \&Ev |
.Ss \&Ev |
Environmental variables such as those specified in |
Environmental variables such as those specified in |
.Xr environ 7 . |
.Xr environ 7 . |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Ev DISPLAY |
.Dl \&.Ev DISPLAY |
.D1 \&.Ev PATH |
.Dl \&.Ev PATH |
.Ss \&Ex |
.Ss \&Ex |
Inserts text regarding a utility's exit values. This macro must have |
Insert a standard sentence regarding exit values. |
first the |
Its syntax is as follows: |
.Fl std |
.Pp |
argument specified, then an optional |
.D1 Pf \. Sx \&Ex Fl std Op Ar utility |
.Ar utility . |
.Pp |
If |
When |
.Ar utility |
.Ar utility |
is not provided, the document's name as stipulated in |
is not specified, the document's name set by |
.Sx \&Nm |
.Sx \&Nm |
is provided. |
is used. |
|
.Pp |
|
See also |
|
.Sx \&Rv . |
.Ss \&Fa |
.Ss \&Fa |
|
Function argument. |
|
Its syntax is as follows: |
|
.Bd -ragged -offset indent |
|
.Pf \. Sx \&Fa |
|
.Op Cm argtype |
|
.Cm argname |
|
.Ed |
|
.Pp |
|
This may be invoked for names with or without the corresponding type. |
|
It is also used to specify the field name of a structure. |
|
Most often, the |
|
.Sx \&Fa |
|
macro is used in the |
|
.Em SYNOPSIS |
|
within |
|
.Sx \&Fo |
|
section when documenting multi-line function prototypes. |
|
If invoked with multiple arguments, the arguments are separated by a |
|
comma. |
|
Furthermore, if the following macro is another |
|
.Sx \&Fa , |
|
the last argument will also have a trailing comma. |
|
.Pp |
|
Examples: |
|
.Dl \&.Fa \(dqconst char *p\(dq |
|
.Dl \&.Fa \(dqint a\(dq \(dqint b\(dq \(dqint c\(dq |
|
.Dl \&.Fa foo |
|
.Pp |
|
See also |
|
.Sx \&Fo . |
.Ss \&Fc |
.Ss \&Fc |
|
End a function context started by |
|
.Sx \&Fo . |
.Ss \&Fd |
.Ss \&Fd |
|
Historically used to document include files. |
|
This usage has been deprecated in favour of |
|
.Sx \&In . |
|
Do not use this macro. |
|
.Pp |
|
See also |
|
.Sx MANUAL STRUCTURE |
|
and |
|
.Sx \&In . |
.Ss \&Fl |
.Ss \&Fl |
Command-line flag. Used when listing arguments to command-line |
Command-line flag. |
utilities. Prints a fixed-width hyphen |
Used when listing arguments to command-line utilities. |
|
Prints a fixed-width hyphen |
.Sq \- |
.Sq \- |
directly followed by each argument. If no arguments are provided, a hyphen is |
directly followed by each argument. |
printed followed by a space. If the argument is a macro, a hyphen is |
If no arguments are provided, a hyphen is printed followed by a space. |
prefixed to the subsequent macro output. |
If the argument is a macro, a hyphen is prefixed to the subsequent macro |
|
output. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Fl a b c |
.Dl \&.Fl a b c |
.D1 \&.Fl \&Pf a b |
.Dl \&.Fl \&Pf a b |
.D1 \&.Fl |
.Dl \&.Fl |
.D1 \&.Op \&Fl o \&Ns \&Ar file |
.Dl \&.Op \&Fl o \&Ns \&Ar file |
.Pp |
.Pp |
See also |
See also |
.Sx \&Cm . |
.Sx \&Cm . |
.Ss \&Fn |
.Ss \&Fn |
|
A function name. |
|
Its syntax is as follows: |
|
.Bd -ragged -offset indent |
|
.Pf \. Ns Sx \&Fn |
|
.Op Ar functype |
|
.Ar funcname |
|
.Op Oo Ar argtype Oc Ar argname |
|
.Ed |
|
.Pp |
|
Function arguments are surrounded in parenthesis and |
|
are delimited by commas. |
|
If no arguments are specified, blank parenthesis are output. |
|
.Pp |
|
Examples: |
|
.Dl \&.Fn \*qint funcname\*q \*qint arg0\*q \*qint arg1\*q |
|
.Dl \&.Fn funcname \*qint arg0\*q |
|
.Dl \&.Fn funcname arg0 |
|
.Bd -literal -offset indent -compact |
|
\&.Ft functype |
|
\&.Fn funcname |
|
.Ed |
|
.Pp |
|
When referring to a function documented in another manual page, use |
|
.Sx \&Xr |
|
instead. |
|
See also |
|
.Sx MANUAL STRUCTURE |
|
and |
|
.Sx \&Ft . |
.Ss \&Fo |
.Ss \&Fo |
.Ss \&Fr |
Begin a function block. |
|
This is a multi-line version of |
|
.Sx \&Fn . |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Fo Ar funcname |
|
.Pp |
|
Invocations usually occur in the following context: |
|
.Bd -ragged -offset indent |
|
.Pf \. Sx \&Ft Ar functype |
|
.br |
|
.Pf \. Sx \&Fo Ar funcname |
|
.br |
|
.Pf \. Sx \&Fa Oo Ar argtype Oc Ar argname |
|
.br |
|
\&.\.\. |
|
.br |
|
.Pf \. Sx \&Fc |
|
.Ed |
|
.Pp |
|
A |
|
.Sx \&Fo |
|
scope is closed by |
|
.Pp |
|
See also |
|
.Sx MANUAL STRUCTURE , |
|
.Sx \&Fa , |
|
.Sx \&Fc , |
|
and |
|
.Sx \&Ft . |
.Ss \&Ft |
.Ss \&Ft |
|
A function type. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Ft Ar functype |
|
.Pp |
|
Examples: |
|
.Dl \&.Ft int |
|
.Bd -literal -offset indent -compact |
|
\&.Ft functype |
|
\&.Fn funcname |
|
.Ed |
|
.Pp |
|
See also |
|
.Sx MANUAL STRUCTURE , |
|
.Sx \&Fn , |
|
and |
|
.Sx \&Fo . |
.Ss \&Fx |
.Ss \&Fx |
Format the FreeBSD version provided as an argument, or a default value |
Format the |
|
.Fx |
|
version provided as an argument, or a default value |
if no argument is provided. |
if no argument is provided. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Fx 7.1 |
.Dl \&.Fx 7.1 |
.D1 \&.Fx |
.Dl \&.Fx |
.Pp |
.Pp |
See also |
See also |
.Sx \&At , |
.Sx \&At , |
|
|
and |
and |
.Sx \&Ux . |
.Sx \&Ux . |
.Ss \&Hf |
.Ss \&Hf |
|
This macro is obsolete and not implemented. |
.Ss \&Ic |
.Ss \&Ic |
|
Designate an internal or interactive command. |
|
This is similar to |
|
.Sx \&Cm |
|
but used for instructions rather than values. |
|
.Pp |
|
Examples: |
|
.Dl \&.Ic hash |
|
.Dl \&.Ic alias |
|
.Pp |
|
Note that using |
|
.Sx \&Bd Fl literal |
|
or |
|
.Sx \&D1 |
|
is preferred for displaying code; the |
|
.Sx \&Ic |
|
macro is used when referring to specific instructions. |
.Ss \&In |
.Ss \&In |
|
An |
|
.Dq include |
|
file. |
|
In the |
|
.Em SYNOPSIS |
|
section (only if invoked as the line macro), the first argument is |
|
preceded by |
|
.Dq #include , |
|
the arguments is enclosed in angle brackets. |
|
.Pp |
|
Examples: |
|
.Dl \&.In sys/types |
|
.Pp |
|
See also |
|
.Sx MANUAL STRUCTURE . |
.Ss \&It |
.Ss \&It |
|
A list item. |
|
The syntax of this macro depends on the list type. |
|
.Pp |
|
Lists |
|
of type |
|
.Fl hang , |
|
.Fl ohang , |
|
.Fl inset , |
|
and |
|
.Fl diag |
|
have the following syntax: |
|
.Pp |
|
.D1 Pf \. Sx \&It Ar args |
|
.Pp |
|
Lists of type |
|
.Fl bullet , |
|
.Fl dash , |
|
.Fl enum , |
|
.Fl hyphen |
|
and |
|
.Fl item |
|
have the following syntax: |
|
.Pp |
|
.D1 Pf \. Sx \&It |
|
.Pp |
|
with subsequent lines interpreted within the scope of the |
|
.Sx \&It |
|
until either a closing |
|
.Sx \&El |
|
or another |
|
.Sx \&It . |
|
.Pp |
|
The |
|
.Fl tag |
|
list has the following syntax: |
|
.Pp |
|
.D1 Pf \. Sx \&It Op Cm args |
|
.Pp |
|
Subsequent lines are interpreted as with |
|
.Fl bullet |
|
and family. |
|
The line arguments correspond to the list's left-hand side; body |
|
arguments correspond to the list's contents. |
|
.Pp |
|
The |
|
.Fl column |
|
list is the most complicated. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&It Op Cm args |
|
.Pp |
|
The |
|
.Cm args |
|
are phrases, a mix of macros and text corresponding to a line column, |
|
delimited by tabs or the special |
|
.Sq \&Ta |
|
pseudo-macro. |
|
Lines subsequent the |
|
.Sx \&It |
|
are interpreted within the scope of the last phrase. |
|
Calling the pseudo-macro |
|
.Sq \&Ta |
|
will open a new phrase scope (this must occur on a macro line to be |
|
interpreted as a macro). |
|
Note that the tab phrase delimiter may only be used within the |
|
.Sx \&It |
|
line itself. |
|
Subsequent this, only the |
|
.Sq \&Ta |
|
pseudo-macro may be used to delimit phrases. |
|
Furthermore, note that quoted sections propagate over tab-delimited |
|
phrases on an |
|
.Sx \&It , |
|
for example, |
|
.Pp |
|
.Dl .It \(dqcol1 ; <TAB> col2 ;\(dq \&; |
|
.Pp |
|
will preserve the semicolon whitespace except for the last. |
|
.Pp |
|
See also |
|
.Sx \&Bl . |
.Ss \&Lb |
.Ss \&Lb |
|
Specify a library. |
|
The syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Lb Ar library |
|
.Pp |
|
The |
|
.Ar library |
|
parameter may be a system library, such as |
|
.Ar libz |
|
or |
|
.Ar libpam , |
|
in which case a small library description is printed next to the linker |
|
invocation; or a custom library, in which case the library name is |
|
printed in quotes. |
|
This is most commonly used in the |
|
.Em SYNOPSIS |
|
section as described in |
|
.Sx MANUAL STRUCTURE . |
|
.Pp |
|
Examples: |
|
.Dl \&.Lb libz |
|
.Dl \&.Lb mdoc |
.Ss \&Li |
.Ss \&Li |
|
Denotes text that should be in a literal font mode. |
|
Note that this is a presentation term and should not be used for |
|
stylistically decorating technical terms. |
|
.Pp |
|
See also |
|
.Sx \&Bf , |
|
.Sx \&Sy , |
|
and |
|
.Sx \&Em . |
.Ss \&Lk |
.Ss \&Lk |
Format a hyperlink. The calling syntax is as follows: |
Format a hyperlink. |
|
Its syntax is as follows: |
.Pp |
.Pp |
.D1 \. Ns Sx \&Lk Cm uri Op Cm name |
.D1 Pf \. Sx \&Lk Ar uri Op Ar name |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Lk http://bsd.lv "The BSD.lv Project" |
.Dl \&.Lk http://bsd.lv \*qThe BSD.lv Project\*q |
.D1 \&.Lk http://bsd.lv |
.Dl \&.Lk http://bsd.lv |
.Pp |
.Pp |
See also |
See also |
.Sx \&Mt . |
.Sx \&Mt . |
.Ss \&Lp |
.Ss \&Lp |
|
Synonym for |
|
.Sx \&Pp . |
.Ss \&Ms |
.Ss \&Ms |
|
Display a mathematical symbol. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Ms Ar symbol |
|
.Pp |
|
Examples: |
|
.Dl \&.Ms sigma |
|
.Dl \&.Ms aleph |
.Ss \&Mt |
.Ss \&Mt |
|
Format a |
|
.Dq mailto: |
|
hyperlink. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Mt Ar address |
|
.Pp |
|
Examples: |
|
.Dl \&.Mt discuss@manpages.bsd.lv |
.Ss \&Nd |
.Ss \&Nd |
|
A one line description of the manual's content. |
|
This may only be invoked in the |
|
.Em SYNOPSIS |
|
section subsequent the |
|
.Sx \&Nm |
|
macro. |
|
.Pp |
|
Examples: |
|
.Dl \&.Sx \&Nd mdoc language reference |
|
.Dl \&.Sx \&Nd format and display UNIX manuals |
|
.Pp |
|
The |
|
.Sx \&Nd |
|
macro technically accepts child macros and terminates with a subsequent |
|
.Sx \&Sh |
|
invocation. |
|
Do not assume this behaviour: some |
|
.Xr whatis 1 |
|
database generators are not smart enough to parse more than the line |
|
arguments and will display macros verbatim. |
|
.Pp |
|
See also |
|
.Sx \&Nm . |
.Ss \&Nm |
.Ss \&Nm |
|
The name of the manual page, or \(em in particular in section 1, 6, |
|
and 8 pages \(em of an additional command or feature documented in |
|
the manual page. |
|
When first invoked, the |
|
.Sx \&Nm |
|
macro expects a single argument, the name of the manual page. |
|
Usually, the first invocation happens in the |
|
.Em NAME |
|
section of the page. |
|
The specified name will be remembered and used whenever the macro is |
|
called again without arguments later in the page. |
|
The |
|
.Sx \&Nm |
|
macro uses |
|
.Sx Block full-implicit |
|
semantics when invoked as the first macro on an input line in the |
|
.Em SYNOPSIS |
|
section; otherwise, it uses ordinary |
|
.Sx In-line |
|
semantics. |
|
.Pp |
|
Examples: |
|
.Bd -literal -offset indent |
|
\&.Sh SYNOPSIS |
|
\&.Nm cat |
|
\&.Op Fl benstuv |
|
\&.Op Ar |
|
.Ed |
|
.Pp |
|
In the |
|
.Em SYNOPSIS |
|
of section 2, 3 and 9 manual pages, use the |
|
.Sx \&Fn |
|
macro rather than |
|
.Sx \&Nm |
|
to mark up the name of the manual page. |
.Ss \&No |
.Ss \&No |
|
A |
|
.Dq noop |
|
macro used to terminate prior macro contexts. |
|
.Pp |
|
Examples: |
|
.Dl \&.Sx \&Fl ab \&No cd \&Fl ef |
.Ss \&Ns |
.Ss \&Ns |
|
Suppress a space. |
|
Following invocation, text is interpreted as free-form text until a |
|
macro is encountered. |
|
.Pp |
|
This has no effect when invoked at the start of a macro line. |
|
.Pp |
|
Examples: |
|
.Dl \&.Fl o \&Ns \&Ar output |
|
.Pp |
|
See also |
|
.Sx \&No |
|
and |
|
.Sx \&Sm . |
.Ss \&Nx |
.Ss \&Nx |
Format the NetBSD version provided as an argument, or a default value if |
Format the |
|
.Nx |
|
version provided as an argument, or a default value if |
no argument is provided. |
no argument is provided. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Nx 5.01 |
.Dl \&.Nx 5.01 |
.D1 \&.Nx |
.Dl \&.Nx |
.Pp |
.Pp |
See also |
See also |
.Sx \&At , |
.Sx \&At , |
|
|
and |
and |
.Sx \&Ux . |
.Sx \&Ux . |
.Ss \&Oc |
.Ss \&Oc |
|
Close multi-line |
|
.Sx \&Oo |
|
context. |
.Ss \&Oo |
.Ss \&Oo |
|
Multi-line version of |
|
.Sx \&Op . |
|
.Pp |
|
Examples: |
|
.Bd -literal -offset indent -compact |
|
\&.Oo |
|
\&.Op Fl flag Ns Ar value |
|
\&.Oc |
|
.Ed |
.Ss \&Op |
.Ss \&Op |
|
Command-line option. |
|
Used when listing options to command-line utilities. |
|
Prints the argument(s) in brackets. |
|
.Pp |
|
Examples: |
|
.Dl \&.Op \&Fl a \&Ar b |
|
.Dl \&.Op \&Ar a | b |
|
.Pp |
|
See also |
|
.Sx \&Oo . |
.Ss \&Os |
.Ss \&Os |
Document operating system version. This is the mandatory third macro of |
Document operating system version. |
|
This is the mandatory third macro of |
any |
any |
.Nm |
.Nm |
file. Its calling syntax is as follows: |
file. |
|
Its syntax is as follows: |
.Pp |
.Pp |
.D1 \. Ns Sx \&Os Op Cm system |
.D1 Pf \. Sx \&Os Op Ar system Op Ar version |
.Pp |
.Pp |
The optional |
The optional |
.Cm system |
.Ar system |
parameter specifies the relevant operating system or environment. Left |
parameter specifies the relevant operating system or environment. |
unspecified, it defaults to the local operating system version. This is |
Left unspecified, it defaults to the local operating system version. |
the suggested form. |
This is the suggested form. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Os |
.Dl \&.Os |
.D1 \&.Os KTH/CSC/TCS |
.Dl \&.Os KTH/CSC/TCS |
.D1 \&.Os BSD 4.3 |
.Dl \&.Os BSD 4.3 |
.Pp |
.Pp |
See also |
See also |
.Sx \&Dd |
.Sx \&Dd |
|
|
.Em Remarks : |
.Em Remarks : |
this macro has been deprecated. |
this macro has been deprecated. |
.Ss \&Ox |
.Ss \&Ox |
Format the OpenBSD version provided as an argument, or a default value |
Format the |
|
.Ox |
|
version provided as an argument, or a default value |
if no argument is provided. |
if no argument is provided. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Ox 4.5 |
.Dl \&.Ox 4.5 |
.D1 \&.Ox |
.Dl \&.Ox |
.Pp |
.Pp |
See also |
See also |
.Sx \&At , |
.Sx \&At , |
|
|
and |
and |
.Sx \&Ux . |
.Sx \&Ux . |
.Ss \&Pa |
.Ss \&Pa |
|
A file-system path. |
|
If an argument is not provided, the string |
|
.Dq \(ti |
|
is used as a default. |
|
.Pp |
|
Examples: |
|
.Dl \&.Pa /usr/bin/mandoc |
|
.Dl \&.Pa /usr/share/man/man7/mdoc.7 |
|
.Pp |
|
See also |
|
.Sx \&Lk . |
.Ss \&Pc |
.Ss \&Pc |
|
Close parenthesised context opened by |
|
.Sx \&Po . |
.Ss \&Pf |
.Ss \&Pf |
|
Removes the space |
|
.Pq Dq prefix |
|
between its arguments. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. \&Pf Ar prefix suffix |
|
.Pp |
|
The |
|
.Ar suffix |
|
argument may be a macro. |
|
.Pp |
|
Examples: |
|
.Dl \&.Pf \e. \&Sx \&Pf \&Ar prefix suffix |
.Ss \&Po |
.Ss \&Po |
|
Multi-line version of |
|
.Sx \&Pq . |
.Ss \&Pp |
.Ss \&Pp |
|
Break a paragraph. |
|
This will assert vertical space between prior and subsequent macros |
|
and/or text. |
.Ss \&Pq |
.Ss \&Pq |
|
Parenthesised enclosure. |
|
.Pp |
|
See also |
|
.Sx \&Po . |
.Ss \&Qc |
.Ss \&Qc |
|
Close quoted context opened by |
|
.Sx \&Qo . |
.Ss \&Ql |
.Ss \&Ql |
|
Format a single-quoted literal. |
|
See also |
|
.Sx \&Qq |
|
and |
|
.Sx \&Sq . |
.Ss \&Qo |
.Ss \&Qo |
|
Multi-line version of |
|
.Sx \&Qq . |
.Ss \&Qq |
.Ss \&Qq |
|
Encloses its arguments in |
|
.Dq typewriter |
|
double-quotes. |
|
Consider using |
|
.Sx \&Dq . |
|
.Pp |
|
See also |
|
.Sx \&Dq , |
|
.Sx \&Sq , |
|
and |
|
.Sx \&Qo . |
.Ss \&Re |
.Ss \&Re |
Closes a |
Close an |
.Sx \&Rs |
.Sx \&Rs |
block. Does not have any tail arguments. |
block. |
|
Does not have any tail arguments. |
.Ss \&Rs |
.Ss \&Rs |
Begins a bibliographic |
Begin a bibliographic |
.Pq Dq reference |
.Pq Dq reference |
block. Does not have any head arguments. The block macro may only |
block. |
contain |
Does not have any head arguments. |
|
The block macro may only contain |
.Sx \&%A , |
.Sx \&%A , |
.Sx \&%B , |
.Sx \&%B , |
.Sx \&%C , |
.Sx \&%C , |
|
|
.Sx \&%Q , |
.Sx \&%Q , |
.Sx \&%R , |
.Sx \&%R , |
.Sx \&%T , |
.Sx \&%T , |
|
.Sx \&%U , |
and |
and |
.Sx \&%V |
.Sx \&%V |
child macros (at least one must be specified). |
child macros (at least one must be specified). |
Line 1681 block is used within a SEE ALSO section, a vertical sp |
|
Line 2436 block is used within a SEE ALSO section, a vertical sp |
|
before the rendered output, else the block continues on the current |
before the rendered output, else the block continues on the current |
line. |
line. |
.Ss \&Rv |
.Ss \&Rv |
|
Inserts text regarding a function call's return value. |
|
This macro must consist of the |
|
.Fl std |
|
argument followed by an optional |
|
.Ar function . |
|
If |
|
.Ar function |
|
is not provided, the document's name as stipulated by the first |
|
.Sx \&Nm |
|
is provided. |
|
.Pp |
|
See also |
|
.Sx \&Ex . |
.Ss \&Sc |
.Ss \&Sc |
|
Close single-quoted context opened by |
|
.Sx \&So . |
.Ss \&Sh |
.Ss \&Sh |
|
Begin a new section. |
|
For a list of conventional manual sections, see |
|
.Sx MANUAL STRUCTURE . |
|
These sections should be used unless it's absolutely necessary that |
|
custom sections be used. |
|
.Pp |
|
Section names should be unique so that they may be keyed by |
|
.Sx \&Sx . |
|
.Pp |
|
See also |
|
.Sx \&Pp , |
|
.Sx \&Ss , |
|
and |
|
.Sx \&Sx . |
.Ss \&Sm |
.Ss \&Sm |
|
Switches the spacing mode for output generated from macros. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Sm Cm on | off |
|
.Pp |
|
By default, spacing is |
|
.Ar on . |
|
When switched |
|
.Ar off , |
|
no white space is inserted between macro arguments and between the |
|
output generated from adjacent macros, but text lines |
|
still get normal spacing between words and sentences. |
.Ss \&So |
.Ss \&So |
|
Multi-line version of |
|
.Sx \&Sq . |
.Ss \&Sq |
.Ss \&Sq |
|
Encloses its arguments in |
|
.Dq typewriter |
|
single-quotes. |
|
.Pp |
|
See also |
|
.Sx \&Dq , |
|
.Sx \&Qq , |
|
and |
|
.Sx \&So . |
.Ss \&Ss |
.Ss \&Ss |
|
Begin a new sub-section. |
|
Unlike with |
|
.Sx \&Sh , |
|
there's no convention for sub-sections. |
|
Conventional sections, as described in |
|
.Sx MANUAL STRUCTURE , |
|
rarely have sub-sections. |
|
.Pp |
|
Sub-section names should be unique so that they may be keyed by |
|
.Sx \&Sx . |
|
.Pp |
|
See also |
|
.Sx \&Pp , |
|
.Sx \&Sh , |
|
and |
|
.Sx \&Sx . |
.Ss \&St |
.Ss \&St |
|
Replace an abbreviation for a standard with the full form. |
|
The following standards are recognised: |
|
.Pp |
|
.Bl -tag -width "-p1003.1g-2000X" -compact |
|
.It \-p1003.1-88 |
|
.St -p1003.1-88 |
|
.It \-p1003.1-90 |
|
.St -p1003.1-90 |
|
.It \-p1003.1-96 |
|
.St -p1003.1-96 |
|
.It \-p1003.1-2001 |
|
.St -p1003.1-2001 |
|
.It \-p1003.1-2004 |
|
.St -p1003.1-2004 |
|
.It \-p1003.1-2008 |
|
.St -p1003.1-2008 |
|
.It \-p1003.1 |
|
.St -p1003.1 |
|
.It \-p1003.1b |
|
.St -p1003.1b |
|
.It \-p1003.1b-93 |
|
.St -p1003.1b-93 |
|
.It \-p1003.1c-95 |
|
.St -p1003.1c-95 |
|
.It \-p1003.1g-2000 |
|
.St -p1003.1g-2000 |
|
.It \-p1003.1i-95 |
|
.St -p1003.1i-95 |
|
.It \-p1003.2-92 |
|
.St -p1003.2-92 |
|
.It \-p1003.2a-92 |
|
.St -p1003.2a-92 |
|
.It \-p1387.2-95 |
|
.St -p1387.2-95 |
|
.It \-p1003.2 |
|
.St -p1003.2 |
|
.It \-p1387.2 |
|
.St -p1387.2 |
|
.It \-isoC |
|
.St -isoC |
|
.It \-isoC-90 |
|
.St -isoC-90 |
|
.It \-isoC-amd1 |
|
.St -isoC-amd1 |
|
.It \-isoC-tcor1 |
|
.St -isoC-tcor1 |
|
.It \-isoC-tcor2 |
|
.St -isoC-tcor2 |
|
.It \-isoC-99 |
|
.St -isoC-99 |
|
.It \-iso9945-1-90 |
|
.St -iso9945-1-90 |
|
.It \-iso9945-1-96 |
|
.St -iso9945-1-96 |
|
.It \-iso9945-2-93 |
|
.St -iso9945-2-93 |
|
.It \-ansiC |
|
.St -ansiC |
|
.It \-ansiC-89 |
|
.St -ansiC-89 |
|
.It \-ansiC-99 |
|
.St -ansiC-99 |
|
.It \-ieee754 |
|
.St -ieee754 |
|
.It \-iso8802-3 |
|
.St -iso8802-3 |
|
.It \-ieee1275-94 |
|
.St -ieee1275-94 |
|
.It \-xpg3 |
|
.St -xpg3 |
|
.It \-xpg4 |
|
.St -xpg4 |
|
.It \-xpg4.2 |
|
.St -xpg4.2 |
|
.St -xpg4.3 |
|
.It \-xbd5 |
|
.St -xbd5 |
|
.It \-xcu5 |
|
.St -xcu5 |
|
.It \-xsh5 |
|
.St -xsh5 |
|
.It \-xns5 |
|
.St -xns5 |
|
.It \-xns5.2 |
|
.St -xns5.2 |
|
.It \-xns5.2d2.0 |
|
.St -xns5.2d2.0 |
|
.It \-xcurses4.2 |
|
.St -xcurses4.2 |
|
.It \-susv2 |
|
.St -susv2 |
|
.It \-susv3 |
|
.St -susv3 |
|
.It \-svid4 |
|
.St -svid4 |
|
.El |
.Ss \&Sx |
.Ss \&Sx |
|
Reference a section or sub-section. |
|
The referenced section or sub-section name must be identical to the |
|
enclosed argument, including whitespace. |
|
.Pp |
|
Examples: |
|
.Dl \&.Sx MANUAL STRUCTURE |
|
.Pp |
|
See also |
|
.Sx \&Sh |
|
and |
|
.Sx \&Ss . |
.Ss \&Sy |
.Ss \&Sy |
|
Format enclosed arguments in symbolic |
|
.Pq Dq boldface . |
|
Note that this is a presentation term and should not be used for |
|
stylistically decorating technical terms. |
|
.Pp |
|
See also |
|
.Sx \&Bf , |
|
.Sx \&Li , |
|
and |
|
.Sx \&Em . |
.Ss \&Tn |
.Ss \&Tn |
|
Format a tradename. |
|
.Pp |
|
Examples: |
|
.Dl \&.Tn IBM |
.Ss \&Ud |
.Ss \&Ud |
|
Prints out |
|
.Dq currently under development . |
.Ss \&Ux |
.Ss \&Ux |
Format the UNIX name. Accepts no argument. |
Format the UNIX name. |
|
Accepts no argument. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Ux |
.Dl \&.Ux |
.Pp |
.Pp |
See also |
See also |
.Sx \&At , |
.Sx \&At , |
|
|
and |
and |
.Sx \&Ox . |
.Sx \&Ox . |
.Ss \&Va |
.Ss \&Va |
|
A variable name. |
|
.Pp |
|
Examples: |
|
.Dl \&.Va foo |
|
.Dl \&.Va const char *bar ; |
.Ss \&Vt |
.Ss \&Vt |
A variable type. This is also used for indicating global variables in the |
A variable type. |
SYNOPSIS section, in which case a variable name is also specified. Note that |
This is also used for indicating global variables in the |
it accepts |
.Em SYNOPSIS |
|
section, in which case a variable name is also specified. |
|
Note that it accepts |
.Sx Block partial-implicit |
.Sx Block partial-implicit |
syntax when invoked as the first macro in the SYNOPSIS section, else it |
syntax when invoked as the first macro in the |
accepts ordinary |
.Em SYNOPSIS |
|
section, else it accepts ordinary |
.Sx In-line |
.Sx In-line |
syntax. |
syntax. |
.Pp |
.Pp |
Line 1723 Note that this should not be confused with |
|
Line 2678 Note that this should not be confused with |
|
which is used for function return types. |
which is used for function return types. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Vt unsigned char |
.Dl \&.Vt unsigned char |
.D1 \&.Vt extern const char * const sys_signame[] ; |
.Dl \&.Vt extern const char * const sys_signame[] \&; |
.Pp |
.Pp |
See also |
See also |
.Sx \&Ft |
.Sx MANUAL STRUCTURE |
and |
and |
.Sx \&Va . |
.Sx \&Va . |
.Ss \&Xc |
.Ss \&Xc |
Close a scope opened by |
Close a scope opened by |
.Sx \&Xo . |
.Sx \&Xo . |
.Ss \&Xo |
.Ss \&Xo |
Open an extension scope. This macro originally existed to extend the |
Extend the header of an |
9-argument limit of troff; since this limit has been lifted, the macro |
.Sx \&It |
has been deprecated. |
macro or the body of a partial-implicit block macro |
|
beyond the end of the input line. |
|
This macro originally existed to work around the 9-argument limit |
|
of historic |
|
.Xr roff 7 . |
.Ss \&Xr |
.Ss \&Xr |
Link to another manual |
Link to another manual |
.Pq Qq cross-reference . |
.Pq Qq cross-reference . |
Its calling syntax is |
Its syntax is as follows: |
.Pp |
.Pp |
.D1 \. Ns Sx \&Xr Cm name section |
.D1 Pf \. Sx \&Xr Ar name section |
.Pp |
.Pp |
The |
The |
.Cm name |
.Ar name |
and |
and |
.Cm section |
.Ar section |
are the name and section of the linked manual. If |
are the name and section of the linked manual. |
.Cm section |
If |
|
.Ar section |
is followed by non-punctuation, an |
is followed by non-punctuation, an |
.Sx \&Ns |
.Sx \&Ns |
is inserted into the token stream. This behaviour is for compatibility |
is inserted into the token stream. |
with |
This behaviour is for compatibility with |
.Xr groff 1 . |
GNU troff. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Xr mandoc 1 |
.Dl \&.Xr mandoc 1 |
.D1 \&.Xr mandoc 1 ; |
.Dl \&.Xr mandoc 1 \&; |
.D1 \&.Xr mandoc 1 \&Ns s behaviour |
.Dl \&.Xr mandoc 1 \&Ns s behaviour |
.Ss \&br |
.Ss \&br |
|
Emits a line-break. |
|
This macro should not be used; it is implemented for compatibility with |
|
historical manuals. |
|
.Pp |
|
Consider using |
|
.Sx \&Pp |
|
in the event of natural paragraph breaks. |
.Ss \&sp |
.Ss \&sp |
|
Emits vertical space. |
|
This macro should not be used; it is implemented for compatibility with |
|
historical manuals. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&sp Op Ar height |
|
.Pp |
|
The |
|
.Ar height |
|
argument must be formatted as described in |
|
.Sx Scaling Widths . |
|
If unspecified, |
|
.Sx \&sp |
|
asserts a single vertical space. |
.Sh COMPATIBILITY |
.Sh COMPATIBILITY |
This section documents compatibility between mandoc and other other |
This section documents compatibility between mandoc and other other |
troff implementations, at this time limited to GNU troff |
troff implementations, at this time limited to GNU troff |
.Pq Qq groff . |
.Pq Qq groff . |
The term |
The term |
.Qq historic groff |
.Qq historic groff |
refers to groff versions before the |
refers to groff versions before 1.17, |
|
which featured a significant update of the |
.Pa doc.tmac |
.Pa doc.tmac |
file re-write |
file. |
.Pq somewhere between 1.15 and 1.19 . |
|
.Pp |
.Pp |
Heirloom troff, the other significant troff implementation accepting |
Heirloom troff, the other significant troff implementation accepting |
\-mdoc, is similar to historic groff. |
\-mdoc, is similar to historic groff. |
.Pp |
.Pp |
|
The following problematic behaviour is found in groff: |
|
.ds hist (Historic groff only.) |
|
.Pp |
.Bl -dash -compact |
.Bl -dash -compact |
.It |
.It |
The comment syntax |
Display macros |
.Sq \e." |
.Po |
is no longer accepted. |
.Sx \&Bd , |
|
.Sx \&Dl , |
|
and |
|
.Sx \&D1 |
|
.Pc |
|
may not be nested. |
|
\*[hist] |
.It |
.It |
In groff, the |
.Sx \&At |
.Sx \&Pa |
with unknown arguments produces no output at all. |
macro does not format its arguments when used in the FILES section under |
\*[hist] |
certain list types. mandoc does. |
Newer groff and mandoc print |
|
.Qq AT&T UNIX |
|
and the arguments. |
.It |
.It |
Historic groff does not print a dash for empty |
.Sx \&Bd Fl column |
.Sx \&Fl |
does not recognize trailing punctuation characters when they immediately |
arguments. mandoc and newer groff implementations do. |
precede tabulator characters, but treats them as normal text and |
|
outputs a space before them. |
.It |
.It |
groff behaves irregularly when specifying |
.Sx \&Bd Fl ragged compact |
.Sq \ef |
does not start a new line. |
.Sx Text Decoration |
\*[hist] |
within line-macro scopes. mandoc follows a consistent system. |
|
.It |
.It |
In mandoc, negative scaling units are truncated to zero; groff would |
.Sx \&Dd |
move to prior lines. Furthermore, the |
with non-standard arguments behaves very strangely. |
.Sq f |
When there are three arguments, they are printed verbatim. |
scaling unit, while accepted, is rendered as the default unit. |
Any other number of arguments is replaced by the current date, |
|
but without any arguments the string |
|
.Dq Epoch |
|
is printed. |
.It |
.It |
In quoted literals, groff allowed pair-wise double-quotes to produce a |
.Sx \&Fl |
standalone double-quote in formatted output. This idiosyncratic |
does not print a dash for an empty argument. |
behaviour is not applicable in mandoc. |
\*[hist] |
.It |
.It |
Display types |
.Sx \&Fn |
.Sx \&Bd |
does not start a new line unless invoked as the line macro in the |
.Fl center |
.Em SYNOPSIS |
and |
section. |
.Fl right |
\*[hist] |
are aliases for |
|
.Fl left |
|
in manodc. Furthermore, the |
|
.Fl file Ar file |
|
argument is ignored. Lastly, since text is not right-justified in |
|
mandoc (or even groff), |
|
.Fl ragged |
|
and |
|
.Fl filled |
|
are aliases, as are |
|
.Fl literal |
|
and |
|
.Fl unfilled . |
|
.It |
.It |
In mandoc, blocks of whitespace are stripped from both macro and |
.Sx \&Fo |
free-form text lines (except when in literal mode); groff would retain |
with |
whitespace in free-form text lines. |
.Pf non- Sx \&Fa |
|
children causes inconsistent spacing between arguments. |
|
In mandoc, a single space is always inserted between arguments. |
.It |
.It |
Historic groff has many un-callable macros. Most of these (excluding |
.Sx \&Ft |
some block-level macros) are now callable. |
in the |
|
.Em SYNOPSIS |
|
causes inconsistent vertical spacing, depending on whether a prior |
|
.Sx \&Fn |
|
has been invoked. |
|
See |
|
.Sx \&Ft |
|
and |
|
.Sx \&Fn |
|
for the normalised behaviour in mandoc. |
.It |
.It |
The vertical bar |
.Sx \&In |
.Sq \(ba |
ignores additional arguments and is not treated specially in the |
made historic groff |
.Em SYNOPSIS . |
.Qq go orbital |
\*[hist] |
but has been a proper delimiter since then. |
|
.It |
.It |
.Sx \&It Fl nested |
.Sx \&It |
is assumed for all lists (it wasn't in historic groff): any list may be |
sometimes requires a |
nested and |
.Fl nested |
|
flag. |
|
\*[hist] |
|
In new groff and mandoc, any list may be nested by default and |
.Fl enum |
.Fl enum |
lists will restart the sequence only for the sub-list. |
lists will restart the sequence only for the sub-list. |
.It |
.It |
Some manuals use |
|
.Sx \&Li |
.Sx \&Li |
incorrectly by following it with a reserved character and expecting the |
followed by a reserved character is incorrectly used in some manuals |
delimiter to render. This is not supported in mandoc. |
instead of properly quoting that character, which sometimes works with |
|
historic groff. |
.It |
.It |
In groff, the |
.Sx \&Lk |
.Sx \&Fo |
only accepts a single link-name argument; the remainder is misformatted. |
macro only produces the first parameter. This is not the case in |
|
mandoc. |
|
.It |
.It |
In groff, the |
.Sx \&Pa |
.Sx \&Cd , |
does not format its arguments when used in the FILES section under |
.Sx \&Er , |
certain list types. |
|
.It |
|
.Sx \&Ta |
|
can only be called by other macros, but not at the beginning of a line. |
|
.It |
|
.Sx \&%C |
|
is not implemented. |
|
.It |
|
Historic groff only allows up to eight or nine arguments per macro input |
|
line, depending on the exact situation. |
|
Providing more arguments causes garbled output. |
|
The number of arguments on one input line is not limited with mandoc. |
|
.It |
|
Historic groff has many un-callable macros. |
|
Most of these (excluding some block-level macros) are callable |
|
in new groff and mandoc. |
|
.It |
|
.Sq \(ba |
|
(vertical bar) is not fully supported as a delimiter. |
|
\*[hist] |
|
.It |
|
.Sq \ef |
|
.Pq font face |
and |
and |
.Sx \&Ex |
.Sq \ef |
macros were stipulated only to occur in certain manual sections. mandoc |
.Pq font family face |
does not have these restrictions. |
.Sx Text Decoration |
|
escapes behave irregularly when specified within line-macro scopes. |
|
.It |
|
Negative scaling units return to prior lines. |
|
Instead, mandoc truncates them to zero. |
.El |
.El |
|
.Pp |
|
The following features are unimplemented in mandoc: |
|
.Pp |
|
.Bl -dash -compact |
|
.It |
|
.Sx \&Bd |
|
.Fl file Ar file . |
|
.It |
|
.Sx \&Bd |
|
.Fl offset Ar center |
|
and |
|
.Fl offset Ar right . |
|
Groff does not implement centered and flush-right rendering either, |
|
but produces large indentations. |
|
.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 |
|
In quoted literals, groff allows pairwise double-quotes to produce a |
|
standalone double-quote in formatted output. |
|
This is not supported by mandoc. |
|
.El |
.Sh SEE ALSO |
.Sh SEE ALSO |
|
.Xr man 1 , |
.Xr mandoc 1 , |
.Xr mandoc 1 , |
|
.Xr eqn 7 , |
|
.Xr man 7 , |
.Xr mandoc_char 7 |
.Xr mandoc_char 7 |
|
.Xr roff 7 , |
|
.Xr tbl 7 |
|
.Sh HISTORY |
|
The |
|
.Nm |
|
language first appeared as a troff macro package in |
|
.Bx 4.4 . |
|
It was later significantly updated by Werner Lemberg and Ruslan Ermilov |
|
in groff-1.17. |
|
The standalone implementation that is part of the |
|
.Xr mandoc 1 |
|
utility written by Kristaps Dzonsons appeared in |
|
.Ox 4.6 . |
.Sh AUTHORS |
.Sh AUTHORS |
The |
The |
.Nm |
.Nm |
reference was written by |
reference was written by |
.An Kristaps Dzonsons Aq kristaps@bsd.lv . |
.An Kristaps Dzonsons Aq kristaps@bsd.lv . |
.\" |
|
.\" XXX: this really isn't the place for these caveats. |
|
.\" . |
|
.\" . |
|
.\" .Sh CAVEATS |
|
.\" There are many ambiguous parts of mdoc. |
|
.\" . |
|
.\" .Pp |
|
.\" .Bl -dash -compact |
|
.\" .It |
|
.\" .Sq \&Fa |
|
.\" should be |
|
.\" .Sq \&Va |
|
.\" as function arguments are variables. |
|
.\" .It |
|
.\" .Sq \&Ft |
|
.\" should be |
|
.\" .Sq \&Vt |
|
.\" as function return types are still types. Furthermore, the |
|
.\" .Sq \&Ft |
|
.\" should be removed and |
|
.\" .Sq \&Fo , |
|
.\" which ostensibly follows it, should follow the same convention as |
|
.\" .Sq \&Va . |
|
.\" .It |
|
.\" .Sq \&Va |
|
.\" should formalise that only one or two arguments are acceptable: a |
|
.\" variable name and optional, preceding type. |
|
.\" .It |
|
.\" .Sq \&Fd |
|
.\" is ambiguous. It's commonly used to indicate an include file in the |
|
.\" synopsis section. |
|
.\" .Sq \&In |
|
.\" should be used, instead. |
|
.\" .It |
|
.\" Only the |
|
.\" .Sq \-literal |
|
.\" argument to |
|
.\" .Sq \&Bd |
|
.\" makes sense. The remaining ones should be removed. |
|
.\" .It |
|
.\" The |
|
.\" .Sq \&Xo |
|
.\" and |
|
.\" .Sq \&Xc |
|
.\" macros should be deprecated. |
|
.\" .It |
|
.\" The |
|
.\" .Sq \&Dt |
|
.\" macro lacks clarity. It should be absolutely clear which title will |
|
.\" render when formatting the manual page. |
|
.\" .It |
|
.\" A |
|
.\" .Sq \&Lx |
|
.\" should be provided for Linux (\(`a la |
|
.\" .Sq \&Ox , |
|
.\" .Sq \&Nx |
|
.\" etc.). |
|
.\" .It |
|
.\" There's no way to refer to references in |
|
.\" .Sq \&Rs/Re |
|
.\" blocks. |
|
.\" .It |
|
.\" The \-split and \-nosplit dictates via |
|
.\" .Sq \&An |
|
.\" are re-set when entering and leaving the AUTHORS section. |
|
.\" .El |
|
.\" . |
|