version 1.111, 2010/05/30 11:00:53 |
version 1.128, 2010/07/01 15:38:56 |
Line 33 section describes compatibility with other troff \-mdo |
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Line 33 section describes compatibility with other troff \-mdo |
|
.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. Other lines are interpreted within the scope of |
|
|
whether in a macro or free-form text line, is ignored to the end of |
whether in a macro or free-form text line, is ignored to the end of |
line. A macro line with only a control character and comment escape, |
line. A macro line with only a control character and comment escape, |
.Sq \&.\e" , |
.Sq \&.\e" , |
is also ignored. Macro lines with only a control charater and optionally |
is also ignored. Macro lines with only a control character and optionally |
whitespace are stripped from input. |
whitespace are 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 122 escape followed by an indicator: B (bold), I, (italic) |
|
Line 122 escape followed by an indicator: B (bold), I, (italic) |
|
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. |
A text decoration is valid within |
A text decoration is valid within |
the current font scope only: if a macro opens a font scope alongside |
the current font scope only: if a macro opens a font scope alongside |
its own scope, such as |
its own scope, such as |
.Sx \&Bf |
.Sx \&Bf |
.Cm \&Sy , |
.Cm \&Sy , |
Line 167 also defined a set of package-specific |
|
Line 167 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 |
Line 333 must be the NAME section, consisting of at least one |
|
Line 333 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, & 9 only. |
\&.\e\*q The next is for sections 2, 3, & 9 only. |
\&.\e\*q .Sh LIBRARY |
\&.\e\*q .Sh LIBRARY |
\&. |
|
\&.Sh SYNOPSIS |
\&.Sh SYNOPSIS |
\&.Nm foo |
\&.Nm foo |
\&.Op Fl options |
\&.Op Fl options |
\&.Ar |
\&.Ar |
\&. |
|
\&.Sh DESCRIPTION |
\&.Sh DESCRIPTION |
The |
The |
\&.Nm |
\&.Nm |
Line 453 And for the third, configurations (section 4): |
|
Line 453 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 pair-wise 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 \&Sx , |
|
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 expands upon the brief, one-line description in |
.Em NAME . |
.Em NAME . |
Line 654 has multiple heads. |
|
Line 685 has multiple heads. |
|
.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope |
.It Em Macro Ta Em Callable Ta Em Parsable 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. |
Like block full-explicit, but also with single-line scope. |
Each has at least a body and, in limited circumstances, a head |
Each has at least a body and, in limited circumstances, a head |
|
|
.Sx \&Aq . |
.Sx \&Aq . |
.Ss \&Ap |
.Ss \&Ap |
Inserts an apostrophe without any surrounding white-space. |
Inserts an apostrophe without any surrounding white-space. |
This is generally used as a grammatic device when referring to the verb |
This is generally used as a grammatical device when referring to the verb |
form of a function: |
form of a function: |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.Fn execve Ap d |
\&.Fn execve Ap d |
Line 1076 As a scaling unit following the syntax described in |
|
Line 1118 As a scaling unit following the syntax described in |
|
As the calculated string length of the opaque string. |
As the calculated string length of the opaque string. |
.El |
.El |
.Pp |
.Pp |
If unset, it will revert to the value of |
If not provided an argument, it will be ignored. |
.Ar 8n |
|
as described in |
|
.Sx Scaling Widths . |
|
.It Fl compact |
.It Fl compact |
Do not assert a vertical space before the block. |
Do not assert a vertical space before the block. |
.It Fl file Ar file |
.It Fl file Ar file |
|
|
.Sx \&Dl . |
.Sx \&Dl . |
.Ss \&Bf |
.Ss \&Bf |
.Ss \&Bk |
.Ss \&Bk |
|
Begins a keep block, containing a collection of macros or text |
|
to be kept together in the output. |
|
One argument is required; additional arguments are ignored. |
|
Currently, the only argument implemented is |
|
.Fl words , |
|
requesting to keep together all words of the contained text |
|
on the same output line. |
|
A |
|
.Fl lines |
|
argument to keep together all lines of the contained text |
|
on the same page has been desired for a long time, |
|
but has never been implemented. |
|
.Pp |
|
Examples: |
|
.Bd -literal -offset indent |
|
\&.Bk \-words |
|
\&.Op o Ar output_file |
|
\&.Ek |
|
.Ed |
.Ss \&Bl |
.Ss \&Bl |
Begins a list composed of one or more list entries. |
Begins a list composed of one or more list entries. |
A list is associated with a type, which is a required argument. |
A list is associated with a type, which is a required argument. |
|
|
These dictate the width of columns either as |
These dictate the width of columns either as |
.Sx Scaling Widths |
.Sx Scaling Widths |
or literal text. |
or literal text. |
List entry bodies must be left empty. |
If the initial macro of a |
Column bodies have the following syntax: |
.Fl column |
.Pp |
list is not an |
.D1 .It col1 <TAB> ... coln |
.Sx \&It , |
.D1 .It col1 Ta ... coln |
an |
.D1 .It col1 <TAB> col2 Ta coln |
.Sx \&It |
.Pp |
context spanning each line is implied until an |
where columns may be separated by tabs, the literal string |
.Sx \&It |
.Qq Ta , |
line macro is encountered, at which point list bodies are interpreted as |
or a mixture of both. |
described in the |
These are equivalent except that quoted sections propogate over tabs, |
.Sx \&It |
for example, |
documentation. |
.Pp |
|
.D1 .It \(dqcol1 ; <TAB> col2 ;\(dq ; |
|
.Pp |
|
will preserve the semicolon whitespace except for the last. |
|
.It Fl dash |
.It Fl dash |
A list offset by a dash (hyphen). |
A list offset by a dash (hyphen). |
The head of list entries must be empty. |
The head of list entries must be empty. |
Line 1209 after the head as specified by the |
|
Line 1263 after the head as specified by the |
|
.Fl width |
.Fl width |
argument. |
argument. |
.El |
.El |
|
.Pp |
|
See also |
|
.Sx \&It . |
.Ss \&Bo |
.Ss \&Bo |
Begins a block enclosed by square brackets. |
Begins a block enclosed by square brackets. |
Does not have any head arguments. |
Does not have any head arguments. |
|
|
and |
and |
.Sx \&Dl . |
.Sx \&Dl . |
.Ss \&Db |
.Ss \&Db |
|
Start a debugging context. |
|
This macro is parsed, but generally ignored. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Db Cm on | off |
.Ss \&Dc |
.Ss \&Dc |
Closes a |
Closes a |
.Sx \&Do |
.Sx \&Do |
|
|
This is the mandatory first macro of any |
This is the mandatory first macro of any |
.Nm |
.Nm |
manual. |
manual. |
Its calling syntax is as follows: |
Its syntax is as follows: |
.Pp |
.Pp |
.D1 \. Ns Sx \&Dd Cm date |
.D1 Pf \. Sx \&Dd Cm date |
.Pp |
.Pp |
The |
The |
.Cm date |
.Cm date |
Line 1406 Document title. |
|
Line 1468 Document title. |
|
This is the mandatory second macro of any |
This is the mandatory second macro of any |
.Nm |
.Nm |
file. |
file. |
Its calling syntax is as follows: |
Its syntax is as follows: |
|
.Bd -ragged -offset indent |
|
.Pf \. Sx \&Dt |
|
.Oo |
|
.Cm title |
|
.Oo |
|
.Cm section |
|
.Op Cm volume | arch |
|
.Oc |
|
.Oc |
|
.Ed |
.Pp |
.Pp |
.D1 \. Ns Sx \&Dt Op Cm title Op Cm 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 Cm title |
|
|
.Ss \&Ed |
.Ss \&Ed |
.Ss \&Ef |
.Ss \&Ef |
.Ss \&Ek |
.Ss \&Ek |
|
Ends a keep context started by |
|
.Sx \&Bk . |
.Ss \&El |
.Ss \&El |
|
Ends 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. |
Denotes text that should be emphasised. |
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 1602 is not provided, the document's name as stipulated in |
|
Line 1681 is not provided, the document's name as stipulated in |
|
.Sx \&Nm |
.Sx \&Nm |
is provided. |
is provided. |
.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: |
|
.D1 \&.Fa \(dqconst char *p\(dq |
|
.D1 \&.Fa \(dqint a\(dq \(dqint b\(dq \(dqint c\(dq |
|
.D1 \&.Fa foo |
|
.Pp |
|
See also |
|
.Sx \&Fo . |
.Ss \&Fc |
.Ss \&Fc |
.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. |
Command-line flag. |
Used when listing arguments to command-line utilities. |
Used when listing arguments to command-line utilities. |
|
|
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 Cm functype |
|
.Cm funcname |
|
.Op Oo Cm argtype Oc Cm 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: |
|
.D1 \&.Fn "int funcname" "int arg0" "int arg1" |
|
.D1 \&.Fn funcname "int arg0" |
|
.D1 \&.Fn funcname arg0 |
|
.Bd -literal -offset indent -compact |
|
\&.Ft functype |
|
\&.Fn funcname |
|
.Ed |
|
.Pp |
|
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 Cm funcname |
|
.Pp |
|
Invocations usually occur in the following context: |
|
.Bd -ragged -offset indent |
|
.Pf \. Sx \&Ft Cm functype |
|
.br |
|
.Pf \. Sx \&Fo Cm funcname |
|
.br |
|
.Pf \. Sx \&Fa Oo Cm argtype Oc Cm 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 |
.Ss \&Ft |
.Ss \&Ft |
|
A function type. |
|
Its syntax is as follows: |
|
.Pp |
|
.D1 Pf \. Sx \&Ft Cm functype |
|
.Pp |
|
Examples: |
|
.D1 \&.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 FreeBSD version provided as an argument, or a default value |
if no argument is provided. |
if no argument is provided. |
|
|
.Ss \&Hf |
.Ss \&Hf |
.Ss \&Ic |
.Ss \&Ic |
.Ss \&In |
.Ss \&In |
|
An |
|
.Qq include |
|
file. |
|
In the |
|
.Em SYNOPSIS |
|
section (only if invoked as the line macro), the first argument is |
|
preceded by |
|
.Qq #include , |
|
the arguments is enclosed in angled braces. |
|
.Pp |
|
Examples: |
|
.D1 \&.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 Cm 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 |
|
.D1 .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. |
Specify a library. |
The calling syntax is as follows: |
The syntax is as follows: |
.Pp |
.Pp |
.D1 \. Ns Sx \&Lb Cm library |
.D1 Pf \. Sx \&Lb Cm library |
.Pp |
.Pp |
The |
The |
.Cm library |
.Cm library |
|
|
.Ss \&Li |
.Ss \&Li |
.Ss \&Lk |
.Ss \&Lk |
Format a hyperlink. |
Format a hyperlink. |
The calling syntax is as follows: |
Its syntax is as follows: |
.Pp |
.Pp |
.D1 \. Ns 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" |
.D1 \&.Lk http://bsd.lv "The BSD.lv Project" |
|
|
.Ss \&Lp |
.Ss \&Lp |
.Ss \&Ms |
.Ss \&Ms |
.Ss \&Mt |
.Ss \&Mt |
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Format a |
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.Qq mailto: |
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hyperlink. |
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Its syntax is as follows: |
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.Pp |
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.D1 Pf \. Sx \&Mt Cm address |
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.Pp |
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Examples: |
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.D1 \&.Mt discuss@manpages.bsd.lv |
.Ss \&Nd |
.Ss \&Nd |
.Ss \&Nm |
.Ss \&Nm |
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The name of the manual page, or \(em in particular in section 1, 6, |
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and 8 pages \(em of an additional command or feature documented in |
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the manual page. |
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When first invoked, the |
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.Sx \&Nm |
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macro expects a single argument, the name of the manual page. |
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Usually, the first invocation happens in the |
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.Em NAME |
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section of the page. |
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The specified name will be remembered and used whenever the macro is |
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called again without arguments later in the page. |
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The |
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.Sx \&Nm |
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macro uses |
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.Sx Block full-implicit |
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semantics when invoked as the first macro on an input line in the |
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.Em SYNOPSIS |
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section; otherwise, it uses ordinary |
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.Sx In-line |
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semantics. |
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.Pp |
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Examples: |
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.Bd -literal -offset indent |
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\&.Sh SYNOPSIS |
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\&.Nm cat |
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\&.Op Fl benstuv |
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\&.Op Ar |
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.Ed |
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.Pp |
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In the |
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.Em SYNOPSIS |
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of section 2, 3 and 9 manual pages, use the |
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.Sx \&Fn |
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macro rather than |
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.Sx \&Nm |
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to mark up the name of the manual page. |
.Ss \&No |
.Ss \&No |
.Ss \&Ns |
.Ss \&Ns |
.Ss \&Nx |
.Ss \&Nx |
Line 1715 Document operating system version. |
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Line 2045 Document operating system version. |
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This is the mandatory third macro of |
This is the mandatory third macro of |
any |
any |
.Nm |
.Nm |
file. Its calling syntax is as follows: |
file. |
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Its syntax is as follows: |
.Pp |
.Pp |
.D1 \. Ns Sx \&Os Op Cm system |
.D1 Pf \. Sx \&Os Op Cm system |
.Pp |
.Pp |
The optional |
The optional |
.Cm system |
.Cm system |
Line 1789 The block macro may only contain |
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Line 2120 The block macro may only contain |
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.Sx \&%Q , |
.Sx \&%Q , |
.Sx \&%R , |
.Sx \&%R , |
.Sx \&%T , |
.Sx \&%T , |
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.Sx \&%U , |
and |
and |
.Sx \&%V |
.Sx \&%V |
child macros (at least one must be specified). |
child macros (at least one must be specified). |
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.Ss \&Va |
.Ss \&Va |
.Ss \&Vt |
.Ss \&Vt |
A variable type. |
A variable type. |
This is also used for indicating global variables in the SYNOPSIS |
This is also used for indicating global variables in the |
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.Em SYNOPSIS |
section, in which case a variable name is also specified. |
section, in which case a variable name is also specified. |
Note that it accepts |
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 |
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section, else it accepts ordinary |
.Sx In-line |
.Sx In-line |
syntax. |
syntax. |
.Pp |
.Pp |
Line 1858 which is used for function return types. |
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Line 2192 which is used for function return types. |
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.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Vt unsigned char |
.D1 \&.Vt unsigned char |
.D1 \&.Vt extern const char * const sys_signame[] ; |
.D1 \&.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 |
Line 1874 since this limit has been lifted, the macro has been d |
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Line 2208 since this limit has been lifted, the macro has been d |
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.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 Cm name section |
.Pp |
.Pp |
The |
The |
.Cm name |
.Cm name |
Line 1893 This behaviour is for compatibility with |
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Line 2227 This behaviour is for compatibility with |
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.Pp |
.Pp |
Examples: |
Examples: |
.D1 \&.Xr mandoc 1 |
.D1 \&.Xr mandoc 1 |
.D1 \&.Xr mandoc 1 ; |
.D1 \&.Xr mandoc 1 \&; |
.D1 \&.Xr mandoc 1 \&Ns s behaviour |
.D1 \&.Xr mandoc 1 \&Ns s behaviour |
.Ss \&br |
.Ss \&br |
.Ss \&sp |
.Ss \&sp |
Line 1913 Heirloom troff, the other significant troff implementa |
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Line 2247 Heirloom troff, the other significant troff implementa |
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.Pp |
.Pp |
.Bl -dash -compact |
.Bl -dash -compact |
.It |
.It |
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Old groff fails to assert a newline before |
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.Sx \&Bd Fl ragged compact . |
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.It |
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groff behaves inconsistently when encountering |
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.Pf non- Sx \&Fa |
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children of |
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.Sx \&Fo |
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regarding spacing between arguments. |
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In mandoc, this is not the case: each argument is consistently followed |
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by a single space and the trailing |
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.Sq \&) |
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suppresses prior spacing. |
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.It |
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groff behaves inconsistently when encountering |
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.Sx \&Ft |
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and |
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.Sx \&Fn |
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in the |
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.Em SYNOPSIS : |
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at times newline(s) are suppressed depending on whether a prior |
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.Sx \&Fn |
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has been invoked. |
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In mandoc, this is not the case. |
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See |
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.Sx \&Ft |
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and |
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.Sx \&Fn |
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for the normalised behaviour. |
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.It |
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Historic groff does not break before an |
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.Sx \&Fn |
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when not invoked as the line macro in the |
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.Em SYNOPSIS |
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section. |
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.It |
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Historic groff formats the |
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.Sx \&In |
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badly: trailing arguments are trashed and |
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.Em SYNOPSIS |
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is not specially treated. |
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.It |
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groff does not accept the |
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.Sq \&Ta |
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pseudo-macro as a line macro. |
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mandoc does. |
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.It |
The comment syntax |
The comment syntax |
.Sq \e." |
.Sq \e." |
is no longer accepted. |
is no longer accepted. |
Line 1944 In quoted literals, groff allowed pair-wise double-quo |
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Line 2324 In quoted literals, groff allowed pair-wise double-quo |
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standalone double-quote in formatted output. |
standalone double-quote in formatted output. |
This idiosyncratic behaviour is not applicable in mandoc. |
This idiosyncratic behaviour is not applicable in mandoc. |
.It |
.It |
Display types |
Display offsets |
.Sx \&Bd |
.Sx \&Bd |
.Fl center |
.Fl offset Ar center |
and |
and |
.Fl right |
.Fl offset Ar right |
are aliases for |
are disregarded in mandoc. |
.Fl left |
Furthermore, the |
in manodc. Furthermore, the |
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.Fl file Ar file |
.Fl file Ar file |
argument is ignored. |
argument is not supported in mandoc. |
Lastly, since text is not right-justified in mandoc (or even groff), |
Lastly, since text is not right-justified in mandoc (or even groff), |
.Fl ragged |
.Fl ragged |
and |
and |
Line 1983 Some manuals use |
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Line 2362 Some manuals use |
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incorrectly by following it with a reserved character and expecting the |
incorrectly by following it with a reserved character and expecting the |
delimiter to render. |
delimiter to render. |
This is not supported in mandoc. |
This is not supported in mandoc. |
.It |
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In groff, the |
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.Sx \&Fo |
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macro only produces the first parameter. |
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This is not the case in mandoc. |
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.It |
.It |
In groff, the |
In groff, the |
.Sx \&Cd , |
.Sx \&Cd , |