version 1.142, 2010/07/26 13:45:49 |
version 1.180, 2011/02/09 10:03:02 |
|
|
.\" $Id$ |
.\" $Id$ |
.\" |
.\" |
.\" Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv> |
.\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
.\" Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org> |
.\" 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 |
Line 28 language is used to format |
|
Line 28 language is used to format |
|
.Bx |
.Bx |
.Ux |
.Ux |
manuals. |
manuals. |
In this reference document, we describe its syntax, structure, and |
This reference document describes its syntax, structure, and |
usage. |
usage. |
Our reference implementation is mandoc; the |
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 |
Line 50 Other lines are interpreted within the current state. |
|
Line 52 Other lines are interpreted within the current state. |
|
.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. |
character, and, in certain circumstances, the tab character. |
All manuals must have |
.Pp |
.Ux |
If the first character of a 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\*q , |
.Sq \e\*q , |
|
|
A macro line with only a control character and comment escape, |
A macro line with only a control character and comment escape, |
.Sq \&.\e\*q , |
.Sq \&.\e\*q , |
is also ignored. |
is also ignored. |
Macro lines with only a control character and optionally whitespace are |
Macro lines with only a control character and optional whitespace are |
stripped from input. |
stripped from input. |
.Ss Reserved Characters |
.Ss Reserved Characters |
Within a macro line, the following characters are reserved: |
Within a macro line, the following characters are reserved: |
Line 107 for two-character sequences; an open-bracket |
|
Line 109 for two-character sequences; an open-bracket |
|
.Sq \&[ |
.Sq \&[ |
for n-character sequences (terminated at a close-bracket |
for n-character sequences (terminated at a close-bracket |
.Sq \&] ) ; |
.Sq \&] ) ; |
or a single one-character sequence. |
or a single one character sequence. |
See |
See |
.Xr mandoc_char 7 |
.Xr mandoc_char 7 |
for a complete list. |
for a complete list. |
|
|
.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. |
respectively) may be used instead. |
|
|
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 |
|
|
.Pq vertical bar . |
.Pq vertical bar . |
.Ss Whitespace |
.Ss Whitespace |
Whitespace consists of the space character. |
Whitespace consists of the space character. |
In free-form lines, whitespace is preserved within a line; un-escaped |
In free-form lines, whitespace is preserved within a line; unescaped |
trailing spaces are stripped from input (unless in a literal context). |
trailing spaces are stripped from input (unless in a literal context). |
Blank free-form lines, which may include whitespace, are only permitted |
Blank free-form lines, which may include whitespace, are only permitted |
within literal contexts. |
within literal contexts. |
Line 183 If arguments are quoted, whitespace within the quotes |
|
Line 185 If arguments are quoted, whitespace within the quotes |
|
Macro arguments may be quoted with double-quotes to group |
Macro arguments may be quoted with double-quotes to group |
space-delimited terms or to retain blocks of whitespace. |
space-delimited terms or to retain blocks of whitespace. |
A quoted argument begins with a double-quote preceded by whitespace. |
A quoted argument begins with a double-quote preceded by whitespace. |
The next double-quote not pair-wise adjacent to another double-quote |
The next double-quote not pairwise adjacent to another double-quote |
terminates the literal, regardless of surrounding whitespace. |
terminates the literal, regardless of surrounding whitespace. |
.Pp |
.Pp |
Note that any quoted text, even if it would cause a macro invocation |
Note that any quoted text, even if it would cause a macro invocation |
Line 276 is necessarily non-portable across output media. |
|
Line 278 is necessarily non-portable across output media. |
|
See |
See |
.Sx COMPATIBILITY . |
.Sx COMPATIBILITY . |
.Ss Sentence Spacing |
.Ss Sentence Spacing |
When composing a manual, make sure that your sentences end at the end of |
When composing a manual, make sure that sentences end at the end of |
a line. |
a line. |
By doing so, front-ends will be able to apply the proper amount of |
By doing so, front-ends will be able to apply the proper amount of |
spacing after the end of sentence (unescaped) period, exclamation mark, |
spacing after the end of sentence (unescaped) period, exclamation mark, |
or question mark followed by zero or more non-sentence closing |
or question mark followed by zero or more non-sentence closing |
delimiters ( |
delimiters |
.Ns Sq \&) , |
.Po |
|
.Sq \&) , |
.Sq \&] , |
.Sq \&] , |
.Sq \&' , |
.Sq \&' , |
.Sq \&" ) . |
.Sq \&" |
|
.Pc . |
.Pp |
.Pp |
The proper spacing is also intelligently preserved if a sentence ends at |
The proper spacing is also intelligently preserved if a sentence ends at |
the boundary of a macro line, e.g., |
the boundary of a macro line. |
|
For example: |
.Pp |
.Pp |
.D1 \&Xr mandoc 1 \. |
.Dl \&Xr mandoc 1 \. |
.D1 \&Fl T \&Ns \&Cm ascii \. |
.Dl \&Fl T \&Ns \&Cm ascii \. |
.Sh MANUAL STRUCTURE |
.Sh MANUAL STRUCTURE |
A well-formed |
A well-formed |
.Nm |
.Nm |
|
|
\&.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, & 9 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 |
|
|
\&.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 2, 3, & 9 only. |
\&.\e\*q Not used in OpenBSD. |
\&.\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 The next is for sections 1 & 8 only. |
|
\&.\e\*q .Sh EXIT STATUS |
\&.\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 359 utility processes files ... |
|
Line 366 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. |
document are conventionally ordered as they appear above. |
Sections 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 one-line description of the documented material. |
The name(s) and a one line description of the documented material. |
The 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 one-line description |
\&.Nd a one line description |
.Ed |
.Ed |
.Pp |
.Pp |
The |
The |
Line 415 generally structured as follows: |
|
Line 423 generally structured as follows: |
|
.Pp |
.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 *" |
Line 445 section, particularly |
|
Line 453 section, particularly |
|
and |
and |
.Sx \&Ft . |
.Sx \&Ft . |
All of these macros are output on their own line. |
All of these macros are output on their own line. |
If two such dissimilar macros are pair-wise invoked (except for |
If two such dissimilar macros are pairwise invoked (except for |
.Sx \&Ft |
.Sx \&Ft |
before |
before |
.Sx \&Fo |
.Sx \&Fo |
|
|
.Sx \&Ss |
.Sx \&Ss |
macro or the end of an enclosing block, whichever comes first. |
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 expands upon the brief, one line description in |
.Em NAME . |
.Em NAME . |
It usually contains a break-down of the options (if documenting a |
It usually contains 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 489 Implementation-specific notes should be kept here. |
|
Line 497 Implementation-specific notes should be kept here. |
|
This is useful when implementing standard functions that may have side |
This is useful when implementing standard functions that may have side |
effects or notable algorithmic implications. |
effects or notable algorithmic implications. |
.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 . |
Line 513 the file is used (created, modified, etc.). |
|
Line 519 the file is used (created, modified, etc.). |
|
See |
See |
.Sx \&Pa . |
.Sx \&Pa . |
.It Em EXIT STATUS |
.It Em EXIT STATUS |
Command exit status for section 1, 6, and 8 manuals. |
This section documents the |
This section is the dual of |
command exit status for section 1, 6, and 8 utilities. |
.Em RETURN VALUES , |
|
which is used for functions. |
|
Historically, this information was described in |
Historically, this information was described in |
.Em DIAGNOSTICS , |
.Em DIAGNOSTICS , |
a practise that is now discouraged. |
a practise that is now discouraged. |
|
|
.It Em EXAMPLES |
.It Em EXAMPLES |
Example usages. |
Example usages. |
This often contains snippets of well-formed, well-tested invocations. |
This often contains snippets of well-formed, well-tested invocations. |
Make doubly sure that your examples work properly! |
Make sure that examples work properly! |
.It Em DIAGNOSTICS |
.It Em DIAGNOSTICS |
Documents error conditions. |
Documents error conditions. |
This is most useful in section 4 manuals. |
This is most useful in section 4 manuals. |
Line 560 section should be used instead. |
|
Line 564 section should be used instead. |
|
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 email address. |
Authors should generally be noted by both name and email address. |
.Pp |
.Pp |
See |
See |
|
|
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 |
Known bugs, limitations and work-arounds should be described |
Known bugs, limitations, and work-arounds should be described |
in this section. |
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. |
|
|
.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. |
as an argument to another macro. |
If a macro is not callable, then its invocation after the initial line |
If a macro is not callable but its name appears as an argument |
macro is interpreted as opaque text, such that |
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 Parsed |
.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. |
their names as arguments. |
If a macro is not parsed, subsequent macro invocations on the line |
If a macro is not parsed but the name of another macro appears |
will be interpreted as opaque text. |
as an argument, it is interpreted as opaque text. |
.Pp |
.Pp |
The |
The |
.Em Scope |
.Em Scope |
Line 771 If a number (or inequality) of arguments is |
|
Line 774 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... |
|
|
Line 794 then the macro accepts an arbitrary number of argument |
|
Line 797 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 803 then the macro accepts an arbitrary number of argument |
|
Line 806 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 n |
.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 n |
.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 879 referring to book titles. |
|
Line 882 referring to book titles. |
|
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 |
|
|
Do not use this for postal addresses. |
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. |
Author name. |
Requires either the name of an author or one of the following arguments: |
Requires either the name of an author or one of the following arguments: |
Line 973 for the first author listing and |
|
Line 972 for the first author listing and |
|
for all other author listings. |
for all other author listings. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.An -nosplit |
.Dl \&.An -nosplit |
.D1 \&.An Kristaps Dzonsons \&Aq kristaps@bsd.lv |
.Dl \&.An Kristaps Dzonsons \&Aq kristaps@bsd.lv |
.Ss \&Ao |
.Ss \&Ao |
Begin a block enclosed by angle brackets. |
Begin a block enclosed by angle brackets. |
Does not have any head 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 . |
Line 990 This is generally used as a grammatical device when re |
|
Line 989 This is generally used as a grammatical device when re |
|
form of a function. |
form of a function. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Fn execve \&Ap d |
.Dl \&.Fn execve \&Ap d |
.Ss \&Aq |
.Ss \&Aq |
Encloses its arguments in angle 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 1016 If an argument is not provided, the string |
|
Line 1015 If an argument is not provided, the string |
|
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. |
Formats an AT&T version. |
Accepts one optional argument: |
Accepts one optional argument: |
|
|
Note that these arguments 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 , |
|
|
argument are equivalent, as are |
argument are equivalent, as are |
.Fl symbolic |
.Fl symbolic |
and |
and |
.Cm \&Sy, |
.Cm \&Sy , |
and |
and |
.Fl literal |
.Fl literal |
and |
and |
Line 1204 Be careful in using over-long lines within a keep bloc |
|
Line 1203 Be careful in using over-long lines within a keep bloc |
|
Doing so will clobber the right margin. |
Doing so will clobber the right margin. |
.Ss \&Bl |
.Ss \&Bl |
Begin a list. |
Begin a list. |
Lists consist of items started by the |
Lists consist of items specified using the |
.Sx \&It |
.Sx \&It |
macro, containing a head or a body or both. |
macro, containing a head or a body or both. |
The list syntax is as follows: |
The list syntax is as follows: |
|
|
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 |
|
|
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 1381 Format the BSD/OS version provided as an argument, or |
|
Line 1380 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 , |
Line 1419 This denotes strings accepted by |
|
Line 1418 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 |
Line 1432 Command modifiers. |
|
Line 1431 Command modifiers. |
|
Useful when specifying configuration options or 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 . |
|
|
It is followed by a newline. |
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 |
Line 1483 or instead a valid canonical date as specified by |
|
Line 1482 or instead a valid canonical date as specified by |
|
If a date does not conform or is empty, the current date is used. |
If a date does not conform or is empty, the current date is used. |
.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 |
|
|
It is followed by a newline. |
It is followed by a newline. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Dl % mandoc mdoc.7 \e(ba less |
.Dl \&.Dl % mandoc mdoc.7 \e(ba less |
.Pp |
.Pp |
See also |
See also |
.Sx \&Bd |
.Sx \&Bd |
Line 1650 It must be one of |
|
Line 1649 It must be one of |
|
.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 |
.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 1687 Format the DragonFly BSD version provided as an argume |
|
Line 1687 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 , |
Line 1734 Note that this is a presentation term and should not b |
|
Line 1734 Note that this is a presentation term and should not b |
|
stylistically decorating technical terms. |
stylistically decorating technical terms. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Em Warnings! |
.Dl \&.Em Warnings! |
.D1 \&.Em Remarks : |
.Dl \&.Em Remarks : |
.Pp |
.Pp |
See also |
See also |
.Sx \&Bf , |
.Sx \&Bf , |
|
|
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 . |
Line 1772 Environmental variables such as those specified in |
|
Line 1772 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 |
Insert a standard sentence regarding exit values. |
Insert a standard sentence regarding exit values. |
Its syntax is as follows: |
Its syntax is as follows: |
Line 1813 Furthermore, if the following macro is another |
|
Line 1813 Furthermore, if the following macro is another |
|
the last argument will also have a trailing comma. |
the last argument will also have a trailing comma. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Fa \(dqconst char *p\(dq |
.Dl \&.Fa \(dqconst char *p\(dq |
.D1 \&.Fa \(dqint a\(dq \(dqint b\(dq \(dqint c\(dq |
.Dl \&.Fa \(dqint a\(dq \(dqint b\(dq \(dqint c\(dq |
.D1 \&.Fa foo |
.Dl \&.Fa foo |
.Pp |
.Pp |
See also |
See also |
.Sx \&Fo . |
.Sx \&Fo . |
Line 1843 If the argument is a macro, a hyphen is prefixed to th |
|
Line 1843 If the argument is a macro, a hyphen is prefixed to th |
|
output. |
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 . |
Line 1865 are delimited by commas. |
|
Line 1865 are delimited by commas. |
|
If no arguments are specified, blank parenthesis are output. |
If no arguments are specified, blank parenthesis are output. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Fn "int funcname" "int arg0" "int arg1" |
.Dl \&.Fn "int funcname" "int arg0" "int arg1" |
.D1 \&.Fn funcname "int arg0" |
.Dl \&.Fn funcname "int arg0" |
.D1 \&.Fn funcname arg0 |
.Dl \&.Fn funcname arg0 |
.Bd -literal -offset indent -compact |
.Bd -literal -offset indent -compact |
\&.Ft functype |
\&.Ft functype |
\&.Fn funcname |
\&.Fn funcname |
.Ed |
.Ed |
.Pp |
.Pp |
|
When referring to a function documented in another manual page, use |
|
.Sx \&Xr |
|
instead. |
See also |
See also |
.Sx MANUAL STRUCTURE |
.Sx MANUAL STRUCTURE |
and |
and |
Line 1915 Its syntax is as follows: |
|
Line 1918 Its syntax is as follows: |
|
.D1 Pf \. Sx \&Ft Cm functype |
.D1 Pf \. Sx \&Ft Cm functype |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Ft int |
.Dl \&.Ft int |
.Bd -literal -offset indent -compact |
.Bd -literal -offset indent -compact |
\&.Ft functype |
\&.Ft functype |
\&.Fn funcname |
\&.Fn funcname |
|
|
and |
and |
.Sx \&Fo . |
.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 , |
Line 1952 This is similar to |
|
Line 1957 This is similar to |
|
but used for instructions rather than values. |
but used for instructions rather than values. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Ic hash |
.Dl \&.Ic hash |
.D1 \&.Ic alias |
.Dl \&.Ic alias |
.Pp |
.Pp |
Note that using |
Note that using |
.Sx \&Bd No Fl literal |
.Sx \&Bd Fl literal |
or |
or |
.Sx \&D1 |
.Sx \&D1 |
is preferred for displaying code; the |
is preferred for displaying code; the |
|
|
the arguments is enclosed in angle brackets. |
the arguments is enclosed in angle brackets. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.In sys/types |
.Dl \&.In sys/types |
.Pp |
.Pp |
See also |
See also |
.Sx MANUAL STRUCTURE . |
.Sx MANUAL STRUCTURE . |
|
|
.Sx \&It , |
.Sx \&It , |
for example, |
for example, |
.Pp |
.Pp |
.D1 .It \(dqcol1 ; <TAB> col2 ;\(dq \&; |
.Dl .It \(dqcol1 ; <TAB> col2 ;\(dq \&; |
.Pp |
.Pp |
will preserve the semicolon whitespace except for the last. |
will preserve the semicolon whitespace except for the last. |
.Pp |
.Pp |
Line 2081 section as described in |
|
Line 2086 section as described in |
|
.Sx MANUAL STRUCTURE . |
.Sx MANUAL STRUCTURE . |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Lb libz |
.Dl \&.Lb libz |
.D1 \&.Lb mdoc |
.Dl \&.Lb mdoc |
.Ss \&Li |
.Ss \&Li |
Denotes text that should be in a literal font mode. |
Denotes text that should be in a literal font mode. |
Note that this is a presentation term and should not be used for |
Note that this is a presentation term and should not be used for |
Line 2100 Its syntax is as follows: |
|
Line 2105 Its syntax is as follows: |
|
.D1 Pf \. Sx \&Lk Cm uri Op Cm name |
.D1 Pf \. Sx \&Lk Cm uri Op Cm 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 . |
Line 2115 Its syntax is as follows: |
|
Line 2120 Its syntax is as follows: |
|
.D1 Pf \. Sx \&Ms Cm symbol |
.D1 Pf \. Sx \&Ms Cm symbol |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Ms sigma |
.Dl \&.Ms sigma |
.D1 \&.Ms aleph |
.Dl \&.Ms aleph |
.Ss \&Mt |
.Ss \&Mt |
Format a |
Format a |
.Dq mailto: |
.Dq mailto: |
Line 2126 Its syntax is as follows: |
|
Line 2131 Its syntax is as follows: |
|
.D1 Pf \. Sx \&Mt Cm address |
.D1 Pf \. Sx \&Mt Cm address |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Mt discuss@manpages.bsd.lv |
.Dl \&.Mt discuss@manpages.bsd.lv |
.Ss \&Nd |
.Ss \&Nd |
A one-line description of the manual's content. |
A one line description of the manual's content. |
This may only be invoked in the |
This may only be invoked in the |
.Em SYNOPSIS |
.Em SYNOPSIS |
section subsequent the |
section subsequent the |
Line 2136 section subsequent the |
|
Line 2141 section subsequent the |
|
macro. |
macro. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Sx \&Nd mdoc language reference |
.Dl \&.Sx \&Nd mdoc language reference |
.D1 \&.Sx \&Nd format and display UNIX manuals |
.Dl \&.Sx \&Nd format and display UNIX manuals |
.Pp |
.Pp |
The |
The |
.Sx \&Nd |
.Sx \&Nd |
|
|
macro used to terminate prior macro contexts. |
macro used to terminate prior macro contexts. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Sx \&Fl ab \&No cd \&Fl ef |
.Dl \&.Sx \&Fl ab \&No cd \&Fl ef |
.Ss \&Ns |
.Ss \&Ns |
Suppress a space. |
Suppress a space. |
Following invocation, text is interpreted as free-form text until a |
Following invocation, text is interpreted as free-form text until a |
macro is encountered. |
macro is encountered. |
.Pp |
.Pp |
|
This has no effect when invoked at the start of a macro line. |
|
.Pp |
Examples: |
Examples: |
.D1 \&.Fl o \&Ns \&Ar output |
.Dl \&.Fl o \&Ns \&Ar output |
.Pp |
.Pp |
See also |
See also |
.Sx \&No |
.Sx \&No |
and |
and |
.Sx \&Sm . |
.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 , |
Line 2244 Used when listing options to command-line utilities. |
|
Line 2253 Used when listing options to command-line utilities. |
|
Prints the argument(s) in brackets. |
Prints the argument(s) in brackets. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Op \&Fl a \&Ar b |
.Dl \&.Op \&Fl a \&Ar b |
.D1 \&.Op \&Ar a | b |
.Dl \&.Op \&Ar a | b |
.Pp |
.Pp |
See also |
See also |
.Sx \&Oo . |
.Sx \&Oo . |
|
|
file. |
file. |
Its syntax is as follows: |
Its syntax is as follows: |
.Pp |
.Pp |
.D1 Pf \. Sx \&Os Op Cm system |
.D1 Pf \. Sx \&Os Op Cm system Op Cm version |
.Pp |
.Pp |
The optional |
The optional |
.Cm system |
.Cm system |
Line 2266 Left unspecified, it defaults to the local operating s |
|
Line 2275 Left unspecified, it defaults to the local operating s |
|
This is 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 , |
|
|
.Sx \&Ux . |
.Sx \&Ux . |
.Ss \&Pa |
.Ss \&Pa |
A file-system path. |
A file-system path. |
|
If an argument is not provided, the string |
|
.Dq \(ti |
|
is used as a default. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Pa /usr/bin/mandoc |
.Dl \&.Pa /usr/bin/mandoc |
.D1 \&.Pa /usr/share/man/man7/mdoc.7 |
.Dl \&.Pa /usr/share/man/man7/mdoc.7 |
.Pp |
.Pp |
See also |
See also |
.Sx \&Lk . |
.Sx \&Lk . |
|
|
argument may be a macro. |
argument may be a macro. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Pf \e. \&Sx \&Pf \&Cm prefix suffix |
.Dl \&.Pf \e. \&Sx \&Pf \&Cm prefix suffix |
.Ss \&Po |
.Ss \&Po |
Multi-line version of |
Multi-line version of |
.Sx \&Pq . |
.Sx \&Pq . |
Line 2581 The referenced section or sub-section name must be ide |
|
Line 2595 The referenced section or sub-section name must be ide |
|
enclosed argument, including whitespace. |
enclosed argument, including whitespace. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Sx MANUAL STRUCTURE |
.Dl \&.Sx MANUAL STRUCTURE |
|
.Pp |
|
See also |
|
.Sx \&Sh |
|
and |
|
.Sx \&Ss . |
.Ss \&Sy |
.Ss \&Sy |
Format enclosed arguments in symbolic |
Format enclosed arguments in symbolic |
.Pq Dq boldface . |
.Pq Dq boldface . |
|
|
Format a tradename. |
Format a tradename. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Tn IBM |
.Dl \&.Tn IBM |
.Ss \&Ud |
.Ss \&Ud |
Prints out |
Prints out |
.Dq currently under development. |
.Dq currently under development . |
.Ss \&Ux |
.Ss \&Ux |
Format the UNIX name. |
Format the UNIX name. |
Accepts no argument. |
Accepts no argument. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Ux |
.Dl \&.Ux |
.Pp |
.Pp |
See also |
See also |
.Sx \&At , |
.Sx \&At , |
|
|
A variable name. |
A variable name. |
.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Va foo |
.Dl \&.Va foo |
.D1 \&.Va const char *bar ; |
.Dl \&.Va const char *bar ; |
.Ss \&Vt |
.Ss \&Vt |
A variable type. |
A variable type. |
This is also used for indicating global variables in the |
This is also used for indicating global variables in the |
Line 2641 Note that this should not be confused with |
|
Line 2660 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 MANUAL STRUCTURE |
.Sx MANUAL STRUCTURE |
|
|
Close a scope opened by |
Close a scope opened by |
.Sx \&Xo . |
.Sx \&Xo . |
.Ss \&Xo |
.Ss \&Xo |
Open an extension scope. |
Extend the header of an |
This macro originally existed to extend the 9-argument limit of troff; |
.Sx \&It |
since this limit has been lifted, the macro 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 . |
Line 2673 is followed by non-punctuation, an |
|
Line 2696 is followed by non-punctuation, an |
|
.Sx \&Ns |
.Sx \&Ns |
is inserted into the token stream. |
is inserted into the token stream. |
This behaviour is for compatibility 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. |
Emits a line-break. |
This macro should not be used; it is implemented for compatibility with |
This macro should not be used; it is implemented for compatibility with |
Line 2708 troff implementations, at this time limited to GNU tro |
|
Line 2731 troff implementations, at this time limited to GNU tro |
|
.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 |
An empty |
Display macros |
.Sq \&Dd |
.Po |
macro in groff prints |
.Sx \&Bd , |
|
.Sx \&Dl , |
|
and |
|
.Sx \&D1 |
|
.Pc |
|
may not be nested. |
|
\*[hist] |
|
.It |
|
.Sx \&At |
|
with unknown arguments produces no output at all. |
|
\*[hist] |
|
Newer groff and mandoc print |
|
.Qq AT&T UNIX |
|
and the arguments. |
|
.It |
|
.Sx \&Bd Fl column |
|
does not recognize trailing punctuation characters when they immediately |
|
precede tabulator characters, but treats them as normal text and |
|
outputs a space before them. |
|
.It |
|
.Sx \&Bd Fl ragged compact |
|
does not start a new line. |
|
\*[hist] |
|
.It |
|
.Sx \&Dd |
|
without an argument prints |
.Dq Epoch . |
.Dq Epoch . |
In mandoc, it resolves to the current date. |
In mandoc, it resolves to the current date. |
.It |
.It |
The \es (font size), \em (font colour), and \eM (font filling colour) |
.Sx \&Fl |
font decoration escapes are all discarded in mandoc. |
does not print a dash for an empty argument. |
|
\*[hist] |
.It |
.It |
Old groff fails to assert a newline before |
.Sx \&Fn |
.Sx \&Bd Fl ragged compact . |
does not start a new line unless invoked as the line macro in the |
|
.Em SYNOPSIS |
|
section. |
|
\*[hist] |
.It |
.It |
groff behaves inconsistently when encountering |
|
.Pf non- Sx \&Fa |
|
children of |
|
.Sx \&Fo |
.Sx \&Fo |
regarding spacing between arguments. |
with |
In mandoc, this is not the case: each argument is consistently followed |
.Pf non- Sx \&Fa |
by a single space and the trailing |
children causes inconsistent spacing between arguments. |
.Sq \&) |
In mandoc, a single space is always inserted between arguments. |
suppresses prior spacing. |
|
.It |
.It |
groff behaves inconsistently when encountering |
|
.Sx \&Ft |
.Sx \&Ft |
and |
|
.Sx \&Fn |
|
in the |
in the |
.Em SYNOPSIS : |
.Em SYNOPSIS |
at times newline(s) are suppressed depending on whether a prior |
causes inconsistent vertical spacing, depending on whether a prior |
.Sx \&Fn |
.Sx \&Fn |
has been invoked. |
has been invoked. |
In mandoc, this is not the case. |
|
See |
See |
.Sx \&Ft |
.Sx \&Ft |
and |
and |
.Sx \&Fn |
.Sx \&Fn |
for the normalised behaviour. |
for the normalised behaviour in mandoc. |
.It |
.It |
Historic groff does not break before an |
|
.Sx \&Fn |
|
when not invoked as the line macro in the |
|
.Em SYNOPSIS |
|
section. |
|
.It |
|
Historic groff formats the |
|
.Sx \&In |
.Sx \&In |
badly: trailing arguments are trashed and |
ignores additional arguments and is not treated specially in the |
.Em SYNOPSIS |
.Em SYNOPSIS . |
is not specially treated. |
\*[hist] |
.It |
.It |
groff does not accept the |
.Sx \&It |
.Sq \&Ta |
sometimes requires a |
pseudo-macro as a line macro. |
.Fl nested |
mandoc does. |
flag. |
|
\*[hist] |
|
In new groff and mandoc, any list may be nested by default and |
|
.Fl enum |
|
lists will restart the sequence only for the sub-list. |
.It |
.It |
The comment syntax |
.Sx \&Li |
.Sq \e\." |
followed by a reserved character is incorrectly used in some manuals |
is no longer accepted. |
instead of properly quoting that character, which sometimes works with |
|
historic groff. |
.It |
.It |
In groff, the |
.Sx \&Lk |
|
only accepts a single link-name argument; the remainder is misformatted. |
|
.It |
.Sx \&Pa |
.Sx \&Pa |
macro does not format its arguments when used in the FILES section under |
does not format its arguments when used in the FILES section under |
certain list types. |
certain list types. |
mandoc does. |
|
.It |
.It |
Historic groff does not print a dash for empty |
.Sx \&Ta |
.Sx \&Fl |
can only be called by other macros, but not at the beginning of a line. |
arguments. |
|
mandoc and newer groff implementations do. |
|
.It |
.It |
groff behaves irregularly when specifying |
.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 |
.Sq \ef |
|
.Pq font face |
|
and |
|
.Sq \ef |
|
.Pq font family face |
.Sx Text Decoration |
.Sx Text Decoration |
within line-macro scopes. |
escapes behave irregularly when specified within line-macro scopes. |
mandoc follows a consistent system. |
|
.It |
.It |
In mandoc, negative scaling units are truncated to zero; groff would |
Negative scaling units return to prior lines. |
move to prior lines. |
Instead, mandoc truncates them to zero. |
Furthermore, the |
.El |
.Sq f |
.Pp |
scaling unit, while accepted, is rendered as the default unit. |
The following features are unimplemented in mandoc: |
|
.Pp |
|
.Bl -dash -compact |
.It |
.It |
In quoted literals, groff allowed pair-wise double-quotes to produce a |
.Sx \&Bd |
standalone double-quote in formatted output. |
.Fl file Ar file . |
This idiosyncratic behaviour is not applicable in mandoc. |
|
.It |
.It |
Display offsets |
|
.Sx \&Bd |
.Sx \&Bd |
.Fl offset Ar center |
.Fl offset Ar center |
and |
and |
.Fl offset Ar right |
.Fl offset Ar right . |
are disregarded in mandoc. |
Groff does not implement centered and flush-right rendering either, |
Furthermore, troff specifies a |
but produces large indentations. |
.Fl file Ar file |
|
argument that is not supported in mandoc. |
|
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 |
Historic groff has many un-callable macros. |
The |
Most of these (excluding some block-level macros) are now callable. |
.Sq \eh |
.It |
.Pq horizontal position , |
The vertical bar |
.Sq \ev |
.Sq \(ba |
.Pq vertical position , |
made historic groff |
.Sq \em |
.Qq go orbital |
.Pq text colour , |
but has been a proper delimiter since then. |
.Sq \eM |
.It |
.Pq text filling colour , |
.Sx \&It Fl nested |
.Sq \ez |
is assumed for all lists (it wasn't in historic groff): any list may be |
.Pq zero-length character , |
nested and |
.Sq \ew |
.Fl enum |
.Pq string length , |
lists will restart the sequence only for the sub-list. |
.Sq \ek |
.It |
.Pq horizontal position marker , |
Some manuals use |
.Sq \eo |
.Sx \&Li |
.Pq text overstrike , |
incorrectly by following it with a reserved character and expecting the |
|
delimiter to render. |
|
This is not supported in mandoc. |
|
.It |
|
In groff, the |
|
.Sx \&Cd , |
|
.Sx \&Er , |
|
.Sx \&Ex , |
|
and |
and |
.Sx \&Rv |
.Sq \es |
macros were stipulated only to occur in certain manual sections. |
.Pq text size |
mandoc does not have these restrictions. |
escape sequences are all discarded in mandoc. |
.It |
.It |
Newer groff and mandoc print |
The |
.Qq AT&T UNIX |
.Sq \ef |
prior to unknown arguments of |
scaling unit is accepted by mandoc, but rendered as the default unit. |
.Sx \&At ; |
.It |
older groff did nothing. |
In quoted literals, groff allows pairwise double-quotes to produce a |
|
standalone double-quote in formatted output. |
|
This is not supported by mandoc. |
.El |
.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 |