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Diff for /mandoc/mdoc.7 between version 1.261 and 1.274

version 1.261, 2017/02/05 22:30:29

version 1.274, 2018/12/23 22:03:32

Line 1

.\" $Id$

.\"

.\" Permission to use, copy, modify, and distribute this software for any

.\" purpose with or without fee is hereby granted, provided that the above

Line 94 document consists of a document prologue followed by o

sections.

.Pp

The prologue, which consists of the

.Sx \&Dd ,

.Ic \&Dd ,

.Sx \&Dt ,

.Ic \&Dt ,

and

.Sx \&Os

.Ic \&Os

macros in that order, is required for every document.

.Pp

The first section (sections are denoted by

.Sx \&Sh )

.Ic \&Sh )

must be the NAME section, consisting of at least one

.Sx \&Nm

.Ic \&Nm

followed by

.Sx \&Nd .

.Ic \&Nd .

.Pp

Following that, convention dictates specifying at least the

.Em SYNOPSIS

Line 182 Multiple

names should be separated by commas.

.Pp

The

.Sx \&Nm

.Ic \&Nm

macro(s) must precede the

.Sx \&Nd

.Ic \&Nd

macro.

.Pp

See

.Sx \&Nm

.Ic \&Nm

and

.Sx \&Nd .

.Ic \&Nd .

.It Em LIBRARY

The name of the library containing the documented material, which is

assumed to be a function in a section 2, 3, or 9 manual.

Line 200 The syntax for this is as follows:

.Ed

.Pp

See

.Sx \&Lb .

.Ic \&Lb .

.It Em SYNOPSIS

Documents the utility invocation syntax, function call syntax, or device

configuration.

Line 231 For the second, function calls (sections 2, 3, 9):

.Ed

.Pp

Ordering of

.Sx \&In ,

.Ic \&In ,

.Sx \&Vt ,

.Ic \&Vt ,

.Sx \&Fn ,

.Ic \&Fn ,

and

.Sx \&Fo

.Ic \&Fo

macros should follow C header-file conventions.

.Pp

And for the third, configurations (section 4):

Line 250 Manuals not in these sections generally don't need a

Some macros are displayed differently in the

.Em SYNOPSIS

section, particularly

.Sx \&Nm ,

.Ic \&Nm ,

.Sx \&Cd ,

.Ic \&Cd ,

.Sx \&Fd ,

.Ic \&Fd ,

.Sx \&Fn ,

.Ic \&Fn ,

.Sx \&Fo ,

.Ic \&Fo ,

.Sx \&In ,

.Ic \&In ,

.Sx \&Vt ,

.Ic \&Vt ,

and

.Sx \&Ft .

.Ic \&Ft .

All of these macros are output on their own line.

If two such dissimilar macros are pairwise invoked (except for

.Sx \&Ft

.Ic \&Ft

before

.Sx \&Fo

.Ic \&Fo

.Sx \&Fn ) ,

.Ic \&Fn ) ,

they are separated by a vertical space, unless in the case of

.Sx \&Fo ,

.Ic \&Fo ,

.Sx \&Fn ,

.Ic \&Fn ,

and

.Sx \&Ft ,

.Ic \&Ft ,

which are always separated by vertical space.

.Pp

When text and macros following an

.Sx \&Nm

.Ic \&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

.Ic \&Nm

macro, up to the next

.Sx \&Nm ,

.Ic \&Nm ,

.Sx \&Sh ,

.Ic \&Sh ,

.Sx \&Ss

.Ic \&Ss

macro or the end of an enclosing block, whichever comes first.

.It Em DESCRIPTION

This begins with an expansion of the brief, one line description in

Line 315 Since the

.Em DESCRIPTION

section usually contains most of the text of a manual, longer manuals

often use the

.Sx \&Ss

.Ic \&Ss

macro to form subsections.

In very long manuals, the

.Em DESCRIPTION

may be split into multiple sections, each started by an

.Sx \&Sh

.Ic \&Sh

macro followed by a non-standard section name, and each having

several subsections, like in the present

.Nm

Line 337 This section documents the

return values of functions in sections 2, 3, and 9.

.Pp

See

.Sx \&Rv .

.Ic \&Rv .

.It Em ENVIRONMENT

Lists the environment variables used by the utility,

and explains the syntax and semantics of their values.

Line 346 The

manual provides examples of typical content and formatting.

.Pp

See

.Sx \&Ev .

.Ic \&Ev .

.It Em FILES

Documents files used.

It's helpful to document both the file name and a short description of how

the file is used (created, modified, etc.).

.Pp

See

.Sx \&Pa .

.Ic \&Pa .

.It Em EXIT STATUS

This section documents the

command exit status for section 1, 6, and 8 utilities.

Line 362 Historically, this information was described in

a practise that is now discouraged.

.Pp

See

.Sx \&Ex .

.Ic \&Ex .

.It Em EXAMPLES

Example usages.

This often contains snippets of well-formed, well-tested invocations.

Line 380 for manuals in sections 1, 6, and 8; however, this pra

discouraged.

.Pp

See

.Sx \&Bl

.Ic \&Bl

.Fl diag .

.It Em ERRORS

Documents

Line 388 Documents

settings in sections 2, 3, 4, and 9.

.Pp

See

.Sx \&Er .

.Ic \&Er .

.It Em SEE ALSO

References other manuals with related topics.

This section should exist for most manuals.

Line 400 for example authoritative books or journal articles, m

provided in this section.

.Pp

See

.Sx \&Rs

.Ic \&Rs

and

.Sx \&Xr .

.Ic \&Xr .

.It Em STANDARDS

References any standards implemented or used.

If not adhering to any standards, the

Line 410 If not adhering to any standards, the

section should be used instead.

.Pp

See

.Sx \&St .

.Ic \&St .

.It Em HISTORY

A brief history of the subject, including where it was first implemented,

and when it was ported to or reimplemented for the operating system at hand.

Line 419 Credits to the person or persons who wrote the code an

Authors should generally be noted by both name and email address.

.Pp

See

.Sx \&An .

.Ic \&An .

.It Em CAVEATS

Common misuses and misunderstandings should be explained

in this section.

Line 437 in the alphabetical

.Sx MACRO REFERENCE .

.Ss Document preamble and NAME section macros

.Bl -column "Brq, Bro, Brc" description

.It Sx \&Dd Ta document date: Cm $\&Mdocdate$ | Ar month day , year

.It Ic \&Dd Ta document date: Cm $\&Mdocdate$ | Ar month day , year

.It Sx \&Dt Ta document title: Ar TITLE section Op Ar arch

.It Ic \&Dt Ta document title: Ar TITLE section Op Ar arch

.It Sx \&Os Ta operating system version: Op Ar system Op Ar version

.It Ic \&Os Ta operating system version: Op Ar system Op Ar version

.It Sx \&Nm Ta document name (one argument)

.It Ic \&Nm Ta document name (one argument)

.It Sx \&Nd Ta document description (one line)

.It Ic \&Nd Ta document description (one line)

.El

.Ss Sections and cross references

.Bl -column "Brq, Bro, Brc" description

.It Sx \&Sh Ta section header (one line)

.It Ic \&Sh Ta section header (one line)

.It Sx \&Ss Ta subsection header (one line)

.It Ic \&Ss Ta subsection header (one line)

.It Sx \&Sx Ta internal cross reference to a section or subsection

.It Ic \&Sx Ta internal cross reference to a section or subsection

.It Sx \&Xr Ta cross reference to another manual page: Ar name section

.It Ic \&Xr Ta cross reference to another manual page: Ar name section

.It Sx \&Pp , \&Lp Ta start a text paragraph (no arguments)

.It Ic \&Pp Ta start a text paragraph (no arguments)

.El

.Ss Displays and lists

.Bl -column "Brq, Bro, Brc" description

.It Sx \&Bd , \&Ed Ta display block:

.It Ic \&Bd , \&Ed Ta display block:

.Fl Ar type

.Op Fl offset Ar width

.Op Fl compact

.It Sx \&D1 Ta indented display (one line)

.It Ic \&D1 Ta indented display (one line)

.It Sx \&Dl Ta indented literal display (one line)

.It Ic \&Dl Ta indented literal display (one line)

.It Sx \&Ql Ta in-line literal display: Ql text

.It Ic \&Ql Ta in-line literal display: Ql text

.It Sx \&Bl , \&El Ta list block:

.It Ic \&Bl , \&El Ta list block:

.Fl Ar type

.Op Fl width Ar val

.Op Fl offset Ar val

.Op Fl compact

.It Sx \&It Ta list item (syntax depends on Fl Ar type )

.It Ic \&It Ta list item (syntax depends on Fl Ar type )

.It Sx \&Ta Ta table cell separator in Sx \&Bl Fl column No lists

.It Ic \&Ta Ta table cell separator in Ic \&Bl Fl column No lists

.It Sx \&Rs , \&%* , \&Re Ta bibliographic block (references)

.It Ic \&Rs , \&%* , \&Re Ta bibliographic block (references)

.El

.Ss Spacing control

.Bl -column "Brq, Bro, Brc" description

.It Sx \&Pf Ta prefix, no following horizontal space (one argument)

.It Ic \&Pf Ta prefix, no following horizontal space (one argument)

.It Sx \&Ns Ta roman font, no preceding horizontal space (no arguments)

.It Ic \&Ns Ta roman font, no preceding horizontal space (no arguments)

.It Sx \&Ap Ta apostrophe without surrounding whitespace (no arguments)

.It Ic \&Ap Ta apostrophe without surrounding whitespace (no arguments)

.It Sx \&Sm Ta switch horizontal spacing mode: Op Cm on | off

.It Ic \&Sm Ta switch horizontal spacing mode: Op Cm on | off

.It Sx \&Bk , \&Ek Ta keep block: Fl words

.It Ic \&Bk , \&Ek Ta keep block: Fl words

.It Sx \&br Ta force output line break in text mode (no arguments)

.It Sx \&sp Ta force vertical space: Op Ar height

.El

.Ss Semantic markup for command line utilities:

.Ss Semantic markup for command line utilities

.Bl -column "Brq, Bro, Brc" description

.It Sx \&Nm Ta start a SYNOPSIS block with the name of a utility

.It Ic \&Nm Ta start a SYNOPSIS block with the name of a utility

.It Sx \&Fl Ta command line options (flags) (>=0 arguments)

.It Ic \&Fl Ta command line options (flags) (>=0 arguments)

.It Sx \&Cm Ta command modifier (>0 arguments)

.It Ic \&Cm Ta command modifier (>0 arguments)

.It Sx \&Ar Ta command arguments (>=0 arguments)

.It Ic \&Ar Ta command arguments (>=0 arguments)

.It Sx \&Op , \&Oo , \&Oc Ta optional syntax elements (enclosure)

.It Ic \&Op , \&Oo , \&Oc Ta optional syntax elements (enclosure)

.It Sx \&Ic Ta internal or interactive command (>0 arguments)

.It Ic \&Ic Ta internal or interactive command (>0 arguments)

.It Sx \&Ev Ta environmental variable (>0 arguments)

.It Ic \&Ev Ta environmental variable (>0 arguments)

.It Sx \&Pa Ta file system path (>=0 arguments)

.It Ic \&Pa Ta file system path (>=0 arguments)

.El

.Ss Semantic markup for function libraries:

.Ss Semantic markup for function libraries

.Bl -column "Brq, Bro, Brc" description

.It Sx \&Lb Ta function library (one argument)

.It Ic \&Lb Ta function library (one argument)

.It Sx \&In Ta include file (one argument)

.It Ic \&In Ta include file (one argument)

.It Sx \&Fd Ta other preprocessor directive (>0 arguments)

.It Ic \&Fd Ta other preprocessor directive (>0 arguments)

.It Sx \&Ft Ta function type (>0 arguments)

.It Ic \&Ft Ta function type (>0 arguments)

.It Sx \&Fo , \&Fc Ta function block: Ar funcname

.It Ic \&Fo , \&Fc Ta function block: Ar funcname

.It Sx \&Fn Ta function name:

.It Ic \&Fn Ta function name: Ar funcname Op Ar argument ...

.Op Ar functype

.It Ic \&Fa Ta function argument (>0 arguments)

.Ar funcname

.It Ic \&Vt Ta variable type (>0 arguments)

.Oo

.It Ic \&Va Ta variable name (>0 arguments)

.Op Ar argtype

.It Ic \&Dv Ta defined variable or preprocessor constant (>0 arguments)

.Ar argname

.It Ic \&Er Ta error constant (>0 arguments)

.Oc

.It Ic \&Ev Ta environmental variable (>0 arguments)

.It Sx \&Fa Ta function argument (>0 arguments)

.It Sx \&Vt Ta variable type (>0 arguments)

.It Sx \&Va Ta variable name (>0 arguments)

.It Sx \&Dv Ta defined variable or preprocessor constant (>0 arguments)

.It Sx \&Er Ta error constant (>0 arguments)

.It Sx \&Ev Ta environmental variable (>0 arguments)

.El

.Ss Various semantic markup:

.Ss Various semantic markup

.Bl -column "Brq, Bro, Brc" description

.It Sx \&An Ta author name (>0 arguments)

.It Ic \&An Ta author name (>0 arguments)

.It Sx \&Lk Ta hyperlink: Ar uri Op Ar name

.It Ic \&Lk Ta hyperlink: Ar uri Op Ar display_name

.It Sx \&Mt Ta Do mailto Dc hyperlink: Ar address

.It Ic \&Mt Ta Do mailto Dc hyperlink: Ar localpart Ns @ Ns Ar domain

.It Sx \&Cd Ta kernel configuration declaration (>0 arguments)

.It Ic \&Cd Ta kernel configuration declaration (>0 arguments)

.It Sx \&Ad Ta memory address (>0 arguments)

.It Ic \&Ad Ta memory address (>0 arguments)

.It Sx \&Ms Ta mathematical symbol (>0 arguments)

.It Ic \&Ms Ta mathematical symbol (>0 arguments)

.El

.Ss Physical markup

.Bl -column "Brq, Bro, Brc" description

.It Sx \&Em Ta italic font or underline (emphasis) (>0 arguments)

.It Ic \&Em Ta italic font or underline (emphasis) (>0 arguments)

.It Sx \&Sy Ta boldface font (symbolic) (>0 arguments)

.It Ic \&Sy Ta boldface font (symbolic) (>0 arguments)

.It Sx \&Li Ta typewriter font (literal) (>0 arguments)

.It Ic \&No Ta return to roman font (normal) (no arguments)

.It Sx \&No Ta return to roman font (normal) (no arguments)

.It Ic \&Bf , \&Ef Ta font block: Fl Ar type | Cm \&Em | \&Li | \&Sy

.It Sx \&Bf , \&Ef Ta font block:

.Op Fl Ar type | Cm \&Em | \&Li | \&Sy

.El

.Ss Physical enclosures

.Bl -column "Brq, Bro, Brc" description

.It Sx \&Dq , \&Do , \&Dc Ta enclose in typographic double quotes: Dq text

.It Ic \&Dq , \&Do , \&Dc Ta enclose in typographic double quotes: Dq text

.It Sx \&Qq , \&Qo , \&Qc Ta enclose in typewriter double quotes: Qq text

.It Ic \&Qq , \&Qo , \&Qc Ta enclose in typewriter double quotes: Qq text

.It Sx \&Sq , \&So , \&Sc Ta enclose in single quotes: Sq text

.It Ic \&Sq , \&So , \&Sc Ta enclose in single quotes: Sq text

.It Sx \&Pq , \&Po , \&Pc Ta enclose in parentheses: Pq text

.It Ic \&Pq , \&Po , \&Pc Ta enclose in parentheses: Pq text

.It Sx \&Bq , \&Bo , \&Bc Ta enclose in square brackets: Bq text

.It Ic \&Bq , \&Bo , \&Bc Ta enclose in square brackets: Bq text

.It Sx \&Brq , \&Bro , \&Brc Ta enclose in curly braces: Brq text

.It Ic \&Brq , \&Bro , \&Brc Ta enclose in curly braces: Brq text

.It Sx \&Aq , \&Ao , \&Ac Ta enclose in angle brackets: Aq text

.It Ic \&Aq , \&Ao , \&Ac Ta enclose in angle brackets: Aq text

.It Sx \&Eo , \&Ec Ta generic enclosure

.It Ic \&Eo , \&Ec Ta generic enclosure

.El

.Ss Text production

.Bl -column "Brq, Bro, Brc" description

.It Sx \&Ex Fl std Ta standard command exit values: Op Ar utility ...

.It Ic \&Ex Fl std Ta standard command exit values: Op Ar utility ...

.It Sx \&Rv Fl std Ta standard function return values: Op Ar function ...

.It Ic \&Rv Fl std Ta standard function return values: Op Ar function ...

.It Sx \&St Ta reference to a standards document (one argument)

.It Ic \&St Ta reference to a standards document (one argument)

.It Sx \&At Ta At

.It Ic \&At Ta At

.It Sx \&Bx Ta Bx

.It Ic \&Bx Ta Bx

.It Sx \&Bsx Ta Bsx

.It Ic \&Bsx Ta Bsx

.It Sx \&Nx Ta Nx

.It Ic \&Nx Ta Nx

.It Sx \&Fx Ta Fx

.It Ic \&Fx Ta Fx

.It Sx \&Ox Ta Ox

.It Ic \&Ox Ta Ox

.It Sx \&Dx Ta Dx

.It Ic \&Dx Ta Dx

.El

.Sh MACRO REFERENCE

This section is a canonical reference of all macros, arranged

alphabetically.

For the scoping of individual macros, see

.Sx MACRO SYNTAX .

.Ss \&%A

.Bl -tag -width 3n

.It Ic \&%A Ar first_name ... last_name

Author name of an

.Sx \&Rs

.Ic \&Rs

block.

Multiple authors should each be accorded their own

.Sx \%%A

.Ic \%%A

line.

Author names should be ordered with full or abbreviated forename(s)

first, then full surname.

.Ss \&%B

.It Ic \&%B Ar title

Book title of an

.Sx \&Rs

.Ic \&Rs

block.

This macro may also be used in a non-bibliographic context when

referring to book titles.

.Ss \&%C

.It Ic \&%C Ar location

Publication city or location of an

.Sx \&Rs

.Ic \&Rs

block.

.Ss \&%D

.It Ic \&%D Oo Ar month day , Oc Ar year

Publication date of an

.Sx \&Rs

.Ic \&Rs

block.

Recommended formats of arguments are

Provide the full English name of the

.Ar month day , year

.Ar month

or just

and all four digits of the

.Ar year .

.Ss \&%I

.It Ic \&%I Ar name

Publisher or issuer name of an

.Sx \&Rs

.Ic \&Rs

block.

.Ss \&%J

.It Ic \&%J Ar name

Journal name of an

.Sx \&Rs

.Ic \&Rs

block.

.Ss \&%N

.It Ic \&%N Ar number

Issue number (usually for journals) of an

.Sx \&Rs

.Ic \&Rs

block.

.Ss \&%O

.It Ic \&%O Ar line

Optional information of an

.Sx \&Rs

.Ic \&Rs

block.

.Ss \&%P

.It Ic \&%P Ar number

Book or journal page number of an

.Sx \&Rs

.Ic \&Rs

block.

.Ss \&%Q

.It Ic \&%Q Ar name

Institutional author (school, government, etc.) of an

.Sx \&Rs

.Ic \&Rs

block.

Multiple institutional authors should each be accorded their own

.Sx \&%Q

.Ic \&%Q

line.

.Ss \&%R

.It Ic \&%R Ar name

Technical report name of an

.Sx \&Rs

.Ic \&Rs

block.

.Ss \&%T

.It Ic \&%T Ar title

Article title of an

.Sx \&Rs

.Ic \&Rs

block.

This macro may also be used in a non-bibliographical context when

referring to article titles.

.Ss \&%U

.It Ic \&%U Ar protocol Ns :// Ns Ar path

URI of reference document.

.Ss \&%V

.It Ic \&%V Ar number

Volume number of an

.Sx \&Rs

.Ic \&Rs

block.

.Ss \&Ac

.It Ic \&Ac

Close an

.Sx \&Ao

.Ic \&Ao

block.

Does not have any tail arguments.

.Ss \&Ad

.It Ic \&Ad Ar address

Memory address.

Do not use this for postal addresses.

.Pp

Examples:

.Dl \&.Ad [0,$]

.Dl \&.Ad 0x00000000

.Ss \&An

.It Ic \&An Fl split | nosplit | Ar first_name ... last_name

Author name.

Can be used both for the authors of the program, function, or driver

documented in the manual, or for the authors of the manual itself.

Line 649 Requires either the name of an author or one of the fo

Line 640 Requires either the name of an author or one of the fo

.Bl -tag -width "-nosplitX" -offset indent -compact

.It Fl split

Start a new output line before each subsequent invocation of

.Sx \&An .

.Ic \&An .

.It Fl nosplit

The opposite of

.Fl split .

Line 673 for all other author listings.

Line 664 for all other author listings.

Examples:

.Dl \&.An -nosplit

.Dl \&.An Kristaps Dzonsons \&Aq \&Mt kristaps@bsd.lv

.Ss \&Ao

.It Ic \&Ao Ar block

Begin a block enclosed by angle brackets.

Does not have any head arguments.

.Pp

This macro is almost never useful.

Examples:

See

.Dl \&.Fl -key= \&Ns \&Ao \&Ar val \&Ac

.Ic \&Aq

.Pp

for more details.

See also

.It Ic \&Ap

.Sx \&Aq .

.Ss \&Ap

Inserts an apostrophe without any surrounding whitespace.

This is generally used as a grammatical device when referring to the verb

form of a function.

.Pp

Examples:

.Dl \&.Fn execve \&Ap d

.Ss \&Aq

.It Ic \&Aq Ar line

Encloses its arguments in angle brackets.

Enclose the rest of the input line in angle brackets.

The only important use case is for email addresses.

See

.Ic \&Mt

for an example.

.Pp

Examples:

Occasionally, it is used for names of characters and keys, for example:

.Dl \&.Fl -key= \&Ns \&Aq \&Ar val

.Bd -literal -offset indent

Press the

\&.Aq escape

key to ...

.Ed

.Pp

.Em Remarks :

For URIs, use

this macro is often abused for rendering URIs, which should instead use

.Ic \&Lk

.Sx \&Lk

instead, and

.Ic \&In

for

.Dq #include

directives.

Never wrap

.Ic \&Ar

.Ic \&Aq .

.Pp

Since

.Ic \&Aq

usually renders with non-ASCII characters in non-ASCII output modes,

do not use it where the ASCII characters

.Sq <

and

.Sq >

are required as syntax elements.

Instead, use these characters directly in such cases, combining them

with the macros

.Ic \&Pf ,

.Ic \&Ns ,

.Sx \&Mt ,

.Ic \&Eo

or to note pre-processor

as needed.

.Dq Li #include

statements, which should use

.Sx \&In .

.Pp

See also

.Sx \&Ao .

.Ic \&Ao .

.Ss \&Ar

.It Ic \&Ar Op Ar placeholder ...

Command arguments.

If an argument is not provided, the string

.Dq file ...\&

Line 719 Examples:

Line 734 Examples:

.Dl ".Ar arg1 , arg2 ."

.Pp

The arguments to the

.Sx \&Ar

.Ic \&Ar

macro are names and placeholders for command arguments;

for fixed strings to be passed verbatim as arguments, use

.Sx \&Fl

.Ic \&Fl

.Sx \&Cm .

.Ic \&Cm .

.Ss \&At

.It Ic \&At Op Ar version

Formats an

.At

version.

Line 737 A version of

Line 752 A version of

.At .

.It Cm III

.At III .

.It Cm V[.[1-4]]?

.It Cm V | V.[1-4]

A version of

.At V .

.El

Line 750 Examples:

Line 765 Examples:

.Dl \&.At V.1

.Pp

See also

.Sx \&Bsx ,

.Ic \&Bsx ,

.Sx \&Bx ,

.Ic \&Bx ,

.Sx \&Dx ,

.Ic \&Dx ,

.Sx \&Fx ,

.Ic \&Fx ,

.Sx \&Nx ,

.Ic \&Nx ,

and

.Sx \&Ox .

.Ic \&Ox .

.Ss \&Bc

.It Ic \&Bc

Close a

.Sx \&Bo

.Ic \&Bo

block.

Does not have any tail arguments.

.Ss \&Bd

.It Ic \&Bd Fl Ns Ar type Oo Fl offset Ar width Oc Op Fl compact

Begin a display block.

Its syntax is as follows:

.Bd -ragged -offset indent

.Pf \. Sx \&Bd

.Fl Ns Ar type

.Op Fl offset Ar width

.Op Fl compact

.Ed

.Pp

Display blocks are used to select a different indentation and

justification than the one used by the surrounding text.

They may contain both macro lines and text lines.

Line 857 Examples:

Line 864 Examples:

.Ed

.Pp

See also

.Sx \&D1

.Ic \&D1

and

.Sx \&Dl .

.Ic \&Dl .

.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

Line 886 and

Line 884 and

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

.Ic \&Ef

is encountered.

.Pp

See also

.Sx \&Li ,

.Ic \&Li ,

.Sx \&Ef ,

.Ic \&Ef ,

.Sx \&Em ,

.Ic \&Em ,

and

.Sx \&Sy .

.Ic \&Sy .

.Ss \&Bk

.It Ic \&Bk Fl words

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

.Ic \&Op

macro line:

.Bd -literal -offset indent

\&.Bk \-words

Line 920 macro line:

Line 915 macro line:

.Pp

Be careful in using over-long lines within a keep block!

Doing so will clobber the right margin.

.Ss \&Bl

.It Xo

Begin a list.

.Ic \&Bl

Lists consist of items specified using the

.Sx \&It

macro, containing a head or a body or both.

The list syntax is as follows:

.Bd -ragged -offset indent

.Pf \. Sx \&Bl

.Fl Ns Ar type

.Op Fl width Ar val

.Op Fl offset Ar val

.Op Fl compact

.Op HEAD ...

.Op Ar col ...

.Ed

.Xc

Begin a list.

Lists consist of items specified using the

.Ic \&It

macro, containing a head or a body or both.

.Pp

The list

.Ar type

Line 943 The

Line 936 The

and

.Fl offset

arguments accept macro names as described for

.Sx \&Bd

.Ic \&Bd

.Fl offset ,

scaling widths as described in

.Xr roff 7 ,

Line 974 argument.

Line 967 argument.

A columnated list.

The

.Fl width

argument has no effect; instead, each argument specifies the width

argument has no effect; instead, the string length of each argument

of one column, using either the scaling width syntax described in

specifies the width of one column.

.Xr roff 7

or the string length of the argument.

If the first line of the body of a

.Fl column

list is not an

.Sx \&It

.Ic \&It

macro line,

.Sx \&It

.Ic \&It

contexts spanning one input line each are implied until an

.Sx \&It

.Ic \&It

macro line is encountered, at which point items start being interpreted as

described in the

.Sx \&It

.Ic \&It

documentation.

.It Fl dash

Line 1051 and

Line 1042 and

lists may not be portable.

.Pp

See also

.Sx \&El

.Ic \&El

and

.Sx \&It .

.Ic \&It .

.Ss \&Bo

.It Ic \&Bo Ar block

Begin a block enclosed by square brackets.

Does not have any head arguments.

.Pp

Line 1065 Examples:

Line 1056 Examples:

.Ed

.Pp

See also

.Sx \&Bq .

.Ic \&Bq .

.Ss \&Bq

.It Ic \&Bq Ar line

Encloses its arguments in square brackets.

.Pp

Examples:

Line 1075 Examples:

Line 1066 Examples:

.Em Remarks :

this macro is sometimes abused to emulate optional arguments for

commands; the correct macros to use for this purpose are

.Sx \&Op ,

.Ic \&Op ,

.Sx \&Oo ,

.Ic \&Oo ,

and

.Sx \&Oc .

.Ic \&Oc .

.Pp

See also

.Sx \&Bo .

.Ic \&Bo .

.Ss \&Brc

.It Ic \&Brc

Close a

.Sx \&Bro

.Ic \&Bro

block.

Does not have any tail arguments.

.Ss \&Bro

.It Ic \&Bro Ar block

Begin a block enclosed by curly braces.

Does not have any head arguments.

.Pp

Line 1098 Examples:

Line 1089 Examples:

.Ed

.Pp

See also

.Sx \&Brq .

.Ic \&Brq .

.Ss \&Brq

.It Ic \&Brq Ar line

Encloses its arguments in curly braces.

.Pp

Examples:

.Dl \&.Brq 1 , ... , \&Va n

.Pp

See also

.Sx \&Bro .

.Ic \&Bro .

.Ss \&Bsx

.It Ic \&Bsx Op Ar version

Format the

.Bsx

version provided as an argument, or a default value if

Line 1118 Examples:

Line 1109 Examples:

.Dl \&.Bsx

.Pp

See also

.Sx \&At ,

.Ic \&At ,

.Sx \&Bx ,

.Ic \&Bx ,

.Sx \&Dx ,

.Ic \&Dx ,

.Sx \&Fx ,

.Ic \&Fx ,

.Sx \&Nx ,

.Ic \&Nx ,

and

.Sx \&Ox .

.Ic \&Ox .

.Ss \&Bt

.It Ic \&Bt

Supported only for compatibility, do not use this in new manuals.

Prints

.Dq is currently in beta test.

.Ss \&Bx

.It Ic \&Bx Op Ar version Op Ar variant

Format the

.Bx

version provided as an argument, or a default value if no

Line 1141 Examples:

Line 1132 Examples:

.Dl \&.Bx

.Pp

See also

.Sx \&At ,

.Ic \&At ,

.Sx \&Bsx ,

.Ic \&Bsx ,

.Sx \&Dx ,

.Ic \&Dx ,

.Sx \&Fx ,

.Ic \&Fx ,

.Sx \&Nx ,

.Ic \&Nx ,

and

.Sx \&Ox .

.Ic \&Ox .

.Ss \&Cd

.It Ic \&Cd Ar line

Kernel configuration declaration.

This denotes strings accepted by

.Xr config 8 .

Line 1160 Examples:

Line 1151 Examples:

.Em Remarks :

this macro is commonly abused by using quoted literals to retain

whitespace and align consecutive

.Sx \&Cd

.Ic \&Cd

declarations.

This practise is discouraged.

.Ss \&Cm

.It Ic \&Cm Ar keyword ...

Command modifiers.

Typically used for fixed strings passed as arguments, unless

.Sx \&Fl

.Ic \&Fl

is more appropriate.

Also useful when specifying configuration options or keys.

.Pp

Line 1176 Examples:

Line 1167 Examples:

.Dl ".Nm dd Cm if= Ns Ar file1 Cm of= Ns Ar file2"

.Dl ".Cm IdentityFile Pa ~/.ssh/id_rsa"

.Dl ".Cm LogLevel Dv DEBUG"

.Ss \&D1

.It Ic \&D1 Ar line

One-line indented display.

This is formatted by the default rules and is useful for simple indented

statements.

Line 1186 Examples:

Line 1177 Examples:

.Dl \&.D1 \&Fl abcdefgh

.Pp

See also

.Sx \&Bd

.Ic \&Bd

and

.Sx \&Dl .

.Ic \&Dl .

.Ss \&Db

.It Ic \&Db

This macro is obsolete.

No replacement is needed.

It is ignored by

.Xr mandoc 1

and groff including its arguments.

It was formerly used to toggle a debugging mode.

.Ss \&Dc

.It Ic \&Dc

Close a

.Sx \&Do

.Ic \&Do

block.

Does not have any tail arguments.

.Ss \&Dd

.It Ic \&Dd Cm $\&Mdocdate$ | Ar month day , year

Document date for display in the page footer.

This is the mandatory first macro of any

.Nm

manual.

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&Dd Ar month day , year

.Pp

The

.Ar month

is the full English month name, the

.Ar day

is an optionally zero-padded numeral, and the

is an integer number, and the

.Ar year

is the full four-digit year.

.Pp

Line 1244 If no date string is given, the current date is used.

Line 1232 If no date string is given, the current date is used.

.Pp

Examples:

.Dl \&.Dd $\&Mdocdate$

.Dl \&.Dd $\&Mdocdate: July 21 2007$

.Dl \&.Dd $\&Mdocdate: July 2 2018$

.Dl \&.Dd July 21, 2007

.Dl \&.Dd July 2, 2018

.Pp

See also

.Sx \&Dt

.Ic \&Dt

and

.Sx \&Os .

.Ic \&Os .

.Ss \&Dl

.It Ic \&Dl Ar line

One-line indented display.

This is formatted as literal text and is useful for commands and

invocations.

Line 1261 Examples:

Line 1249 Examples:

.Dl \&.Dl % mandoc mdoc.7 \e(ba less

.Pp

See also

.Sx \&Ql ,

.Ic \&Ql ,

.Sx \&Bd

.Ic \&Bd Fl literal ,

.Fl literal ,

and

.Sx \&D1 .

.Ic \&D1 .

.Ss \&Do

.It Ic \&Do Ar block

Begin a block enclosed by double quotes.

Does not have any head arguments.

.Pp

Line 1279 April is the cruellest month

Line 1266 April is the cruellest month

.Ed

.Pp

See also

.Sx \&Dq .

.Ic \&Dq .

.Ss \&Dq

.It Ic \&Dq Ar line

Encloses its arguments in

.Dq typographic

double-quotes.

Line 1292 Examples:

Line 1279 Examples:

.Ed

.Pp

See also

.Sx \&Qq ,

.Ic \&Qq ,

.Sx \&Sq ,

.Ic \&Sq ,

and

.Sx \&Do .

.Ic \&Do .

.Ss \&Dt

.It Ic \&Dt Ar TITLE section Op Ar arch

Document title for display in the page header.

This is the mandatory second macro of any

.Nm

file.

Its syntax is as follows:

.Bd -ragged -offset indent

.Pf \. Sx \&Dt

.Ar TITLE

.Ar section

.Op Ar arch

.Ed

.Pp

Its arguments are as follows:

.Bl -tag -width section -offset 2n

Line 1359 Examples:

Line 1339 Examples:

.Dl \&.Dt FOO 9 i386

.Pp

See also

.Sx \&Dd

.Ic \&Dd

and

.Sx \&Os .

.Ic \&Os .

.Ss \&Dv

.It Ic \&Dv Ar identifier ...

Defined variables such as preprocessor constants, constant symbols,

enumeration values, and so on.

.Pp

Line 1372 Examples:

Line 1352 Examples:

.Dl \&.Dv STDOUT_FILENO

.Pp

See also

.Sx \&Er

.Ic \&Er

and

.Sx \&Ev

.Ic \&Ev

for special-purpose constants,

.Sx \&Va

.Ic \&Va

for variable symbols, and

.Sx \&Fd

.Ic \&Fd

for listing preprocessor variable definitions in the

.Em SYNOPSIS .

.Ss \&Dx

.It Ic \&Dx Op Ar version

Format the

.Dx

version provided as an argument, or a default

Line 1392 Examples:

Line 1372 Examples:

.Dl \&.Dx

.Pp

See also

.Sx \&At ,

.Ic \&At ,

.Sx \&Bsx ,

.Ic \&Bsx ,

.Sx \&Bx ,

.Ic \&Bx ,

.Sx \&Fx ,

.Ic \&Fx ,

.Sx \&Nx ,

.Ic \&Nx ,

and

.Sx \&Ox .

.Ic \&Ox .

.Ss \&Ec

.It Ic \&Ec Op Ar closing_delimiter

Close a scope started by

.Sx \&Eo .

.Ic \&Eo .

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&Ec Op Ar TERM

.Pp

The

.Ar TERM

.Ar closing_delimiter

argument is used as the enclosure tail, for example, specifying \e(rq

will emulate

.Sx \&Dc .

.Ic \&Dc .

.Ss \&Ed

.It Ic \&Ed

End a display context started by

.Sx \&Bd .

.Ic \&Bd .

.Ss \&Ef

.It Ic \&Ef

End a font mode context started by

.Sx \&Bf .

.Ic \&Bf .

.Ss \&Ek

.It Ic \&Ek

End a keep context started by

.Sx \&Bk .

.Ic \&Bk .

.Ss \&El

.It Ic \&El

End a list context started by

.Sx \&Bl .

.Ic \&Bl .

.Pp

See also

.Sx \&Bl

.Ic \&It .

and

.It Ic \&Em Ar word ...

.Sx \&It .

.Ss \&Em

Request an italic font.

If the output device does not provide that, underline.

.Pp

This is most often used for stress emphasis (not to be confused with

importance, see

.Sx \&Sy ) .

.Ic \&Sy ) .

In the rare cases where none of the semantic markup macros fit,

it can also be used for technical terms and placeholders, except

that for syntax elements,

.Sx \&Sy

.Ic \&Sy

and

.Sx \&Ar

.Ic \&Ar

are preferred, respectively.

.Pp

Examples:

Line 1454 to save the pattern space for subsequent retrieval.

Line 1428 to save the pattern space for subsequent retrieval.

.Ed

.Pp

See also

.Sx \&Bf ,

.Ic \&No ,

.Sx \&Li ,

.Ic \&Ql ,

.Sx \&No ,

and

.Sx \&Sy .

.Ic \&Sy .

.Ss \&En

.It Ic \&En Ar word ...

This macro is obsolete.

Use

.Sx \&Eo

.Ic \&Eo

or any of the other enclosure macros.

.Pp

It encloses its argument in the delimiters specified by the last

.Sx \&Es

.Ic \&Es

macro.

.Ss \&Eo

.It Ic \&Eo Op Ar opening_delimiter

An arbitrary enclosure.

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&Eo Op Ar TERM

.Pp

The

.Ar TERM

.Ar opening_delimiter

argument is used as the enclosure head, for example, specifying \e(lq

will emulate

.Sx \&Do .

.Ic \&Do .

.Ss \&Er

.It Ic \&Er Ar identifier ...

Error constants for definitions of the

.Va errno

libc global variable.

Line 1490 Examples:

Line 1459 Examples:

.Dl \&.Er ENOENT

.Pp

See also

.Sx \&Dv

.Ic \&Dv

for general constants.

.Ss \&Es

.It Ic \&Es Ar opening_delimiter closing_delimiter

This macro is obsolete.

Use

.Sx \&Eo

.Ic \&Eo

or any of the other enclosure macros.

.Pp

It takes two arguments, defining the delimiters to be used by subsequent

.Sx \&En

.Ic \&En

macros.

.Ss \&Ev

.It Ic \&Ev Ar identifier ...

Environmental variables such as those specified in

.Xr environ 7 .

.Pp

Line 1510 Examples:

Line 1479 Examples:

.Dl \&.Ev PATH

.Pp

See also

.Sx \&Dv

.Ic \&Dv

for general constants.

.Ss \&Ex

.It Ic \&Ex Fl std Op Ar utility ...

Insert a standard sentence regarding command exit values of 0 on success

and >0 on failure.

This is most often used in section 1, 6, and 8 manual pages.

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&Ex Fl std Op Ar utility ...

.Pp

.Ar utility

is not specified, the document's name set by

.Sx \&Nm

.Ic \&Nm

is used.

Multiple

.Ar utility

arguments are treated as separate utilities.

.Pp

See also

.Sx \&Rv .

.Ic \&Rv .

.Ss \&Fa

.It Ic \&Fa Ar argument ...

Function argument or parameter.

Its syntax is as follows:

.Bd -ragged -offset indent

.Pf \. Sx \&Fa

.Qo

.Op Ar argtype

.Op Ar argname

.Qc Ar \&...

.Ed

.Pp

Each argument may be a name and a type (recommended for the

.Em SYNOPSIS

section), a name alone (for function invocations),

Line 1549 or a type alone (for function prototypes).

Line 1506 or a type alone (for function prototypes).

If both a type and a name are given or if the type consists of multiple

words, all words belonging to the same function argument have to be

given in a single argument to the

.Sx \&Fa

.Ic \&Fa

macro.

.Pp

This macro is also used to specify the field name of a structure.

.Pp

Most often, the

.Sx \&Fa

.Ic \&Fa

macro is used in the

.Em SYNOPSIS

within

.Sx \&Fo

.Ic \&Fo

blocks 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 ,

.Ic \&Fa ,

the last argument will also have a trailing comma.

.Pp

Examples:

Line 1573 Examples:

Line 1530 Examples:

.Dl \&.Fa \(dqchar *\(dq size_t

.Pp

See also

.Sx \&Fo .

.Ic \&Fo .

.Ss \&Fc

.It Ic \&Fc

End a function context started by

.Sx \&Fo .

.Ic \&Fo .

.Ss \&Fd

.It Ic \&Fd Pf # Ar directive Op Ar argument ...

Preprocessor directive, in particular for listing it in the

.Em SYNOPSIS .

Historically, it was also used to document include files.

The latter usage has been deprecated in favour of

.Sx \&In .

.Ic \&In .

.Pp

Its syntax is as follows:

.Bd -ragged -offset indent

.Pf \. Sx \&Fd

.Li # Ns Ar directive

.Op Ar argument ...

.Ed

.Pp

Examples:

.Dl \&.Fd #define sa_handler __sigaction_u.__sa_handler

.Dl \&.Fd #define SIO_MAXNFDS

Line 1601 Examples:

Line 1551 Examples:

.Pp

See also

.Sx MANUAL STRUCTURE ,

.Sx \&In ,

.Ic \&In ,

and

.Sx \&Dv .

.Ic \&Dv .

.Ss \&Fl

.It Ic \&Fl Op Ar word ...

Command-line flag or option.

Used when listing arguments to command-line utilities.

Prints a fixed-width hyphen

Line 1622 Examples:

Line 1572 Examples:

.Dl ".Fl o Fl"

.Pp

See also

.Sx \&Cm .

.Ic \&Cm .

.Ss \&Fn

.It Ic \&Fn Ar funcname Op Ar argument ...

A function name.

Its syntax is as follows:

.Bd -ragged -offset indent

.Pf . 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.

Line 1652 Examples:

Line 1595 Examples:

.Ed

.Pp

When referring to a function documented in another manual page, use

.Sx \&Xr

.Ic \&Xr

instead.

See also

.Sx MANUAL STRUCTURE ,

.Sx \&Fo ,

.Ic \&Fo ,

and

.Sx \&Ft .

.Ic \&Ft .

.Ss \&Fo

.It Ic \&Fo Ar funcname

Begin a function block.

This is a multi-line version of

.Sx \&Fn .

.Ic \&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

.Pf \. Ic \&Ft Ar functype

.br

.Pf \. Sx \&Fo Ar funcname

.Pf \. Ic \&Fo Ar funcname

.br

.Pf \. Sx \&Fa Qq Ar argtype Ar argname

.Pf \. Ic \&Fa Qq Ar argtype Ar argname

.br

\&.\.\.

.br

.Pf \. Sx \&Fc

.Pf \. Ic \&Fc

.Ed

.Pp

.Sx \&Fo

.Ic \&Fo

scope is closed by

.Sx \&Fc .

.Ic \&Fc .

.Pp

See also

.Sx MANUAL STRUCTURE ,

.Sx \&Fa ,

.Ic \&Fa ,

.Sx \&Fc ,

.Ic \&Fc ,

and

.Sx \&Ft .

.Ic \&Ft .

.Ss \&Fr

.It Ic \&Fr Ar number

This macro is obsolete.

No replacement markup is needed.

.Pp

It was used to show numerical function return values in an italic font.

.Ss \&Ft

.It Ic \&Ft Ar functype

A function type.

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&Ft Ar functype

.Pp

In the

.Em SYNOPSIS

section, a new output line is started after this macro.

Line 1715 Examples:

Line 1652 Examples:

.Pp

See also

.Sx MANUAL STRUCTURE ,

.Sx \&Fn ,

.Ic \&Fn ,

and

.Sx \&Fo .

.Ic \&Fo .

.Ss \&Fx

.It Ic \&Fx Op Ar version

Format the

.Fx

version provided as an argument, or a default value

Line 1729 Examples:

Line 1666 Examples:

.Dl \&.Fx

.Pp

See also

.Sx \&At ,

.Ic \&At ,

.Sx \&Bsx ,

.Ic \&Bsx ,

.Sx \&Bx ,

.Ic \&Bx ,

.Sx \&Dx ,

.Ic \&Dx ,

.Sx \&Nx ,

.Ic \&Nx ,

and

.Sx \&Ox .

.Ic \&Ox .

.Ss \&Hf

.It Ic \&Hf Ar filename

This macro is not implemented in

.Xr mandoc 1 .

.Pp

It was used to include the contents of a (header) file literally.

The syntax was:

.It Ic \&Ic Ar keyword ...

.Pp

.Dl Pf . Sx \&Hf Ar filename

.Ss \&Ic

Designate an internal or interactive command.

This is similar to

.Sx \&Cm

.Ic \&Cm

but used for instructions rather than values.

.Pp

Examples:

Line 1756 Examples:

Line 1689 Examples:

.Dl \&.Ic alias

.Pp

Note that using

.Sx \&Bd Fl literal

.Ic \&Ql ,

.Ic \&Dl ,

.Sx \&D1

.Ic \&Bd Fl literal

is preferred for displaying code; the

is preferred for displaying code samples; the

.Sx \&Ic

.Ic \&Ic

macro is used when referring to specific instructions.

macro is used when referring to an individual command name.

.Ss \&In

.It Ic \&In Ar filename

The name of an include file.

This macro is most often used in section 2, 3, and 9 manual pages.

.Pp

Line 1781 Examples:

Line 1715 Examples:

.Pp

See also

.Sx MANUAL STRUCTURE .

.Ss \&It

.It Ic \&It Op Ar head

A list item.

The syntax of this macro depends on the list type.

.Pp

Line 1794 and

Line 1728 and

.Fl diag

have the following syntax:

.Pp

.D1 Pf \. Sx \&It Ar args

.D1 Pf \. Ic \&It Ar args

.Pp

Lists of type

.Fl bullet ,

Line 1805 and

Line 1739 and

.Fl item

have the following syntax:

.Pp

.D1 Pf \. Sx \&It

.D1 Pf \. Ic \&It

.Pp

with subsequent lines interpreted within the scope of the

.Sx \&It

.Ic \&It

until either a closing

.Sx \&El

.Ic \&El

or another

.Sx \&It .

.Ic \&It .

.Pp

The

.Fl tag

list has the following syntax:

.Pp

.D1 Pf \. Sx \&It Op Cm args

.D1 Pf \. Ic \&It Op Cm args

.Pp

Subsequent lines are interpreted as with

.Fl bullet

Line 1831 The

Line 1765 The

list is the most complicated.

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&It Ar cell Op Sx \&Ta Ar cell ...

.D1 Pf \. Ic \&It Ar cell Op Ic \&Ta Ar cell ...

.D1 Pf \. Sx \&It Ar cell Op <TAB> Ar cell ...

.D1 Pf \. Ic \&It Ar cell Op <TAB> Ar cell ...

.Pp

The arguments consist of one or more lines of text and macros

representing a complete table line.

Cells within the line are delimited by the special

.Sx \&Ta

.Ic \&Ta

block macro or by literal tab characters.

.Pp

Using literal tabs is strongly discouraged because they are very

Line 1851 that word is never interpreted as a macro call, but al

Line 1785 that word is never interpreted as a macro call, but al

literally.

.Pp

The tab cell delimiter may only be used within the

.Sx \&It

.Ic \&It

line itself; on following lines, only the

.Sx \&Ta

.Ic \&Ta

macro can be used to delimit cells, and

macro can be used to delimit cells, and portability requires that

.Sx \&Ta

.Ic \&Ta

is only recognised as a macro when called by other macros,

is called by other macros: some parsers do not recognize it when

not as the first macro on a line.

it appears as the first macro on a line.

.Pp

Note that quoted strings may span tab-delimited cells on an

.Sx \&It

.Ic \&It

line.

For example,

.Pp

Line 1870 will preserve the whitespace before both commas,

Line 1804 will preserve the whitespace before both commas,

but not the whitespace before the semicolon.

.Pp

See also

.Sx \&Bl .

.Ic \&Bl .

.Ss \&Lb

.It Ic \&Lb Cm lib Ns Ar name

Specify a library.

The syntax is as follows:

.Pp

.D1 Pf \. Sx \&Lb Ar library

.Pp

The

.Ar library

.Ar name

parameter may be a system library, such as

.Cm libz

.Cm z

.Cm libpam ,

.Cm pam ,

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.

Line 1894 section as described in

Line 1825 section as described in

Examples:

.Dl \&.Lb libz

.Dl \&.Lb libmandoc

.Ss \&Li

.It Ic \&Li Ar word ...

Denotes text that should be in a

Request a typewriter (literal) font.

.Li literal

Deprecated because on terminal output devices, this is usually

font mode.

indistinguishable from normal text.

Note that this is a presentation term and should not be used for

For literal displays, use

stylistically decorating technical terms.

.Ic \&Ql Pq in-line ,

.Pp

.Ic \&Dl Pq single line ,

On terminal output devices, this is often indistinguishable from

normal text.

.Ic \&Bd Fl literal Pq multi-line

.Pp

instead.

See also

.It Ic \&Lk Ar uri Op Ar display_name

.Sx \&Bf ,

.Sx \&Em ,

.Sx \&No ,

and

.Sx \&Sy .

.Ss \&Lk

Format a hyperlink.

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&Lk Ar uri Op Ar name

.Pp

Examples:

.Dl \&.Lk http://bsd.lv \(dqThe BSD.lv Project\(dq

.Dl \&.Lk http://bsd.lv

.Pp

See also

.Sx \&Mt .

.Ic \&Mt .

.Ss \&Lp

.It Ic \&Lp

Synonym for

Deprecated synonym for

.Sx \&Pp .

.Ic \&Pp .

.Ss \&Ms

.It Ic \&Ms Ar name

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

.It Ic \&Mt Ar localpart Ns @ Ns Ar domain

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

.Dl \&.An Kristaps Dzonsons \&Aq \&Mt kristaps@bsd.lv

.Ss \&Nd

.It Ic \&Nd Ar line

A one line description of the manual's content.

This is the mandatory last macro of the

.Em NAME

section and not appropriate for other sections.

.Pp

Examples:

.Dl Pf . Sx \&Nd mdoc language reference

.Dl Pf . Ic \&Nd mdoc language reference

.Dl Pf . Sx \&Nd format and display UNIX manuals

.Dl Pf . Ic \&Nd format and display UNIX manuals

.Pp

The

.Sx \&Nd

.Ic \&Nd

macro technically accepts child macros and terminates with a subsequent

.Sx \&Sh

.Ic \&Sh

invocation.

Do not assume this behaviour: some

.Xr whatis 1

Line 1966 database generators are not smart enough to parse more

Line 1882 database generators are not smart enough to parse more

arguments and will display macros verbatim.

.Pp

See also

.Sx \&Nm .

.Ic \&Nm .

.Ss \&Nm

.It Ic \&Nm Op Ar name

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

.Ic \&Nm

macro expects a single argument, the name of the manual page.

Usually, the first invocation happens in the

.Em NAME

Line 1980 section of the page.

Line 1896 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

.Ic \&Nm

macro uses

.Sx Block full-implicit

semantics when invoked as the first macro on an input line in the

Line 2000 Examples:

Line 1916 Examples:

In the

.Em SYNOPSIS

of section 2, 3 and 9 manual pages, use the

.Sx \&Fn

.Ic \&Fn

macro rather than

.Sx \&Nm

.Ic \&Nm

to mark up the name of the manual page.

.Ss \&No

.It Ic \&No Ar word ...

Normal text.

Closes the scope of any preceding in-line macro.

When used after physical formatting macros like

.Sx \&Em

.Ic \&Em

.Sx \&Sy ,

.Ic \&Sy ,

switches back to the standard font face and weight.

Can also be used to embed plain text strings in macro lines

using semantic annotation macros.

Line 2025 Examples:

Line 1941 Examples:

.Ed

.Pp

See also

.Sx \&Em ,

.Ic \&Em ,

.Sx \&Li ,

.Ic \&Ql ,

and

.Sx \&Sy .

.Ic \&Sy .

.Ss \&Ns

.It Ic \&Ns

Suppress a space between the output of the preceding macro

and the following text or macro.

Following invocation, input is interpreted as normal text

just like after an

.Sx \&No

.Ic \&No

macro.

.Pp

This has no effect when invoked at the start of a macro line.

Line 2045 Examples:

Line 1961 Examples:

.Dl ".Fl o Ns Ar output"

.Pp

See also

.Sx \&No

.Ic \&No

and

.Sx \&Sm .

.Ic \&Sm .

.Ss \&Nx

.It Ic \&Nx Op Ar version

Format the

.Nx

version provided as an argument, or a default value if

Line 2059 Examples:

Line 1975 Examples:

.Dl \&.Nx

.Pp

See also

.Sx \&At ,

.Ic \&At ,

.Sx \&Bsx ,

.Ic \&Bsx ,

.Sx \&Bx ,

.Ic \&Bx ,

.Sx \&Dx ,

.Ic \&Dx ,

.Sx \&Fx ,

.Ic \&Fx ,

and

.Sx \&Ox .

.Ic \&Ox .

.Ss \&Oc

.It Ic \&Oc

Close multi-line

.Sx \&Oo

.Ic \&Oo

context.

.Ss \&Oo

.It Ic \&Oo Ar block

Multi-line version of

.Sx \&Op .

.Ic \&Op .

.Pp

Examples:

.Bd -literal -offset indent -compact

Line 2080 Examples:

Line 1996 Examples:

\&.Op Fl flag Ns Ar value

\&.Oc

.Ed

.Ss \&Op

.It Ic \&Op Ar line

Optional part of a command line.

Prints the argument(s) in brackets.

This is most often used in the

Line 2092 Examples:

Line 2008 Examples:

.Dl \&.Op \&Ar a | b

.Pp

See also

.Sx \&Oo .

.Ic \&Oo .

.Ss \&Os

.It Ic \&Os Op Ar system Op Ar version

Operating system version for display in the page footer.

This is the mandatory third macro of

any

.Nm

file.

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&Os Op Ar system Op Ar version

.Pp

The optional

.Ar system

parameter specifies the relevant operating system or environment.

Line 2123 Examples:

Line 2036 Examples:

.Dl \&.Os BSD 4.3

.Pp

See also

.Sx \&Dd

.Ic \&Dd

and

.Sx \&Dt .

.Ic \&Dt .

.Ss \&Ot

.It Ic \&Ot Ar functype

This macro is obsolete.

Use

.Sx \&Ft

.Ic \&Ft

instead; with

.Xr mandoc 1 ,

both have the same effect.

Line 2138 Historical

Line 2051 Historical

.Nm

packages described it as

.Dq "old function type (FORTRAN)" .

.Ss \&Ox

.It Ic \&Ox Op Ar version

Format the

.Ox

version provided as an argument, or a default value

Line 2149 Examples:

Line 2062 Examples:

.Dl \&.Ox

.Pp

See also

.Sx \&At ,

.Ic \&At ,

.Sx \&Bsx ,

.Ic \&Bsx ,

.Sx \&Bx ,

.Ic \&Bx ,

.Sx \&Dx ,

.Ic \&Dx ,

.Sx \&Fx ,

.Ic \&Fx ,

and

.Sx \&Nx .

.Ic \&Nx .

.Ss \&Pa

.It Ic \&Pa Ar name ...

An absolute or relative file system path, or a file or directory name.

If an argument is not provided, the character

.Sq \(ti

Line 2167 Examples:

Line 2080 Examples:

.Dl \&.Pa /usr/share/man/man7/mdoc.7

.Pp

See also

.Sx \&Lk .

.Ic \&Lk .

.Ss \&Pc

.It Ic \&Pc

Close parenthesised context opened by

.Sx \&Po .

.Ic \&Po .

.Ss \&Pf

.It Ic \&Pf Ar prefix macro Op Ar argument ...

Removes the space between its argument and the following macro.

Its syntax is as follows:

It is equivalent to:

.Pp

.D1 .Pf Ar prefix macro arguments ...

.D1 Ic \&No Pf \e& Ar prefix Ic \&Ns Ar macro Op Ar argument ...

.Pp

This is equivalent to:

.Pp

.D1 .No \e& Ns Ar prefix No \&Ns Ar macro arguments ...

.Pp

The

.Ar prefix

argument is not parsed for macro names or delimiters,

Line 2192 Examples:

Line 2101 Examples:

.Dl ".Pf 0x Ar hex_digits"

.Pp

See also

.Sx \&Ns

.Ic \&Ns

and

.Sx \&Sm .

.Ic \&Sm .

.Ss \&Po

.It Ic \&Po Ar block

Multi-line version of

.Sx \&Pq .

.Ic \&Pq .

.Ss \&Pp

.It Ic \&Pp

Break a paragraph.

This will assert vertical space between prior and subsequent macros

and/or text.

.Pp

Paragraph breaks are not needed before or after

.Sx \&Sh

.Ic \&Sh

.Sx \&Ss

.Ic \&Ss

macros or before displays

.Pq Sx \&Bd

.Pq Ic \&Bd Ar line

or lists

.Pq Sx \&Bl

.Pq Ic \&Bl

unless the

.Fl compact

flag is given.

.Ss \&Pq

.It Ic \&Pq Ar line

Parenthesised enclosure.

.Pp

See also

.Sx \&Po .

.Ic \&Po .

.Ss \&Qc

.It Ic \&Qc

Close quoted context opened by

.Sx \&Qo .

.Ic \&Qo .

.Ss \&Ql

.It Ic \&Ql Ar line

In-line literal display.

This can for example be used for complete command invocations and

This can be used for complete command invocations and for multi-word

for multi-word code fragments when more specific markup is not

code examples when an indented display is not desired.

appropriate and an indented display is not desired.

While

.Xr mandoc 1

always encloses the arguments in single quotes, other formatters

usually omit the quotes on non-terminal output devices when the

arguments have three or more characters.

.Pp

See also

.Sx \&Dl

.Ic \&Dl

and

.Sx \&Bd

.Ic \&Bd

.Fl literal .

.Ss \&Qo

.It Ic \&Qo Ar block

Multi-line version of

.Sx \&Qq .

.Ic \&Qq .

.Ss \&Qq

.It Ic \&Qq Ar line

Encloses its arguments in

.Qq typewriter

double-quotes.

Consider using

.Sx \&Dq .

.Ic \&Dq .

.Pp

See also

.Sx \&Dq ,

.Ic \&Dq ,

.Sx \&Sq ,

.Ic \&Sq ,

and

.Sx \&Qo .

.Ic \&Qo .

.Ss \&Re

.It Ic \&Re

Close an

.Sx \&Rs

.Ic \&Rs

block.

Does not have any tail arguments.

.Ss \&Rs

.It Ic \&Rs

Begin a bibliographic

.Pq Dq reference

block.

Does not have any head arguments.

The block macro may only contain

.Sx \&%A ,

.Ic \&%A ,

.Sx \&%B ,

.Ic \&%B ,

.Sx \&%C ,

.Ic \&%C ,

.Sx \&%D ,

.Ic \&%D ,

.Sx \&%I ,

.Ic \&%I ,

.Sx \&%J ,

.Ic \&%J ,

.Sx \&%N ,

.Ic \&%N ,

.Sx \&%O ,

.Ic \&%O ,

.Sx \&%P ,

.Ic \&%P ,

.Sx \&%Q ,

.Ic \&%Q ,

.Sx \&%R ,

.Ic \&%R ,

.Sx \&%T ,

.Ic \&%T ,

.Sx \&%U ,

.Ic \&%U ,

and

.Sx \&%V

.Ic \&%V

child macros (at least one must be specified).

.Pp

Examples:

Line 2294 Examples:

Line 2197 Examples:

.Ed

.Pp

If an

.Sx \&Rs

.Ic \&Rs

block is used within a SEE ALSO section, a vertical space is asserted

before the rendered output, else the block continues on the current

line.

.Ss \&Rv

.It Ic \&Rv Fl std Op Ar function ...

Insert a standard sentence regarding a function call's return value of 0

on success and \-1 on error, with the

.Va errno

libc global variable set on error.

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&Rv Fl std Op Ar function ...

.Pp

.Ar function

is not specified, the document's name set by

.Sx \&Nm

.Ic \&Nm

is used.

Multiple

.Ar function

arguments are treated as separate functions.

.Pp

See also

.Sx \&Ex .

.Ic \&Ex .

.Ss \&Sc

.It Ic \&Sc

Close single-quoted context opened by

.Sx \&So .

.Ic \&So .

.Ss \&Sh

.It Ic \&Sh Ar TITLE LINE

Begin a new section.

For a list of conventional manual sections, see

.Sx MANUAL STRUCTURE .

Line 2329 These sections should be used unless it's absolutely n

Line 2229 These sections should be used unless it's absolutely n

custom sections be used.

.Pp

Section names should be unique so that they may be keyed by

.Sx \&Sx .

.Ic \&Sx .

Although this macro is parsed, it should not consist of child node or it

may not be linked with

.Sx \&Sx .

.Ic \&Sx .

.Pp

See also

.Sx \&Pp ,

.Ic \&Pp ,

.Sx \&Ss ,

.Ic \&Ss ,

and

.Sx \&Sx .

.Ic \&Sx .

.Ss \&Sm

.It Ic \&Sm Op Cm on | off

Switches the spacing mode for output generated from macros.

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&Sm Op Cm on | off

.Pp

By default, spacing is

.Cm on .

When switched

Line 2354 output generated from adjacent macros, but text lines

Line 2251 output generated from adjacent macros, but text lines

still get normal spacing between words and sentences.

.Pp

When called without an argument, the

.Sx \&Sm

.Ic \&Sm

macro toggles the spacing mode.

Using this is not recommended because it makes the code harder to read.

.Ss \&So

.It Ic \&So Ar block

Multi-line version of

.Sx \&Sq .

.Ic \&Sq .

.Ss \&Sq

.It Ic \&Sq Ar line

Encloses its arguments in

.Sq typewriter

single-quotes.

.Pp

See also

.Sx \&Dq ,

.Ic \&Dq ,

.Sx \&Qq ,

.Ic \&Qq ,

and

.Sx \&So .

.Ic \&So .

.Ss \&Ss

.It Ic \&Ss Ar Title line

Begin a new subsection.

Unlike with

.Sx \&Sh ,

.Ic \&Sh ,

there is no convention for the naming of subsections.

Except

.Em DESCRIPTION ,

Line 2382 the conventional sections described in

Line 2279 the conventional sections described in

rarely have subsections.

.Pp

Sub-section names should be unique so that they may be keyed by

.Sx \&Sx .

.Ic \&Sx .

Although this macro is parsed, it should not consist of child node or it

may not be linked with

.Sx \&Sx .

.Ic \&Sx .

.Pp

See also

.Sx \&Pp ,

.Ic \&Pp ,

.Sx \&Sh ,

.Ic \&Sh ,

and

.Sx \&Sx .

.Ic \&Sx .

.Ss \&St

.It Ic \&St Fl Ns Ar abbreviation

Replace an abbreviation for a standard with the full form.

The following standards are recognised.

Where multiple lines are given without a blank line in between,

Line 2579 The second and last Technical Corrigendum.

Line 2476 The second and last Technical Corrigendum.

.br

This standard is also called

X/Open Portability Guide version 7.

.Pp

.It \-p1003.1-2013

.St -p1003.1-2013

.br

This is the first Technical Corrigendum.

.El

.It Other standards

.Pp

Line 2607 Ethernet local area networks.

Line 2499 Ethernet local area networks.

.St -ieee1275-94

.El

.Ss \&Sx

.It Ic \&Sx Ar Title line

Reference a section or subsection in the same manual page.

The referenced section or subsection name must be identical to the

enclosed argument, including whitespace.

Line 2616 Examples:

Line 2508 Examples:

.Dl \&.Sx MANUAL STRUCTURE

.Pp

See also

.Sx \&Sh

.Ic \&Sh

and

.Sx \&Ss .

.Ic \&Ss .

.Ss \&Sy

.It Ic \&Sy Ar word ...

Request a boldface font.

.Pp

This is most often used to indicate importance or seriousness (not to be

confused with stress emphasis, see

.Sx \&Em ) .

.Ic \&Em ) .

When none of the semantic macros fit, it is also adequate for syntax

elements that have to be given or that appear verbatim.

.Pp

Line 2640 program.

Line 2532 program.

.Ed

.Pp

See also

.Sx \&Bf ,

.Ic \&Em ,

.Sx \&Em ,

.Ic \&No ,

.Sx \&Li ,

and

.Sx \&No .

.Ic \&Ql .

.Ss \&Ta

.It Ic \&Ta

Table cell separator in

.Sx \&Bl Fl column

.Ic \&Bl Fl column

lists; can only be used below

.Sx \&It .

.Ic \&It .

.Ss \&Tn

.It Ic \&Tn Ar word ...

Supported only for compatibility, do not use this in new manuals.

Even though the macro name

.Pq Dq tradename

suggests a semantic function, historic usage is inconsistent, mostly

using it as a presentation-level macro to request a small caps font.

.Ss \&Ud

.It Ic \&Ud

Supported only for compatibility, do not use this in new manuals.

Prints out

.Dq currently under development.

.Ss \&Ux

.It Ic \&Ux

Supported only for compatibility, do not use this in new manuals.

Prints out

.Dq Ux .

.Ss \&Va

.It Ic \&Va Oo Ar type Oc Ar identifier ...

A variable name.

.Pp

Examples:

Line 2672 Examples:

Line 2563 Examples:

.Dl \&.Va const char *bar ;

.Pp

For function arguments and parameters, use

.Sx \&Fa

.Ic \&Fa

instead.

For declarations of global variables in the

.Em SYNOPSIS

section, use

.Sx \&Vt .

.Ic \&Vt .

.Ss \&Vt

.It Ic \&Vt Ar type Op Ar identifier

A variable type.

.Pp

This is also used for indicating global variables in the

Line 2700 Examples:

Line 2591 Examples:

.Dl \&.Vt extern const char * const sys_signame[] \&;

.Pp

For parameters in function prototypes, use

.Sx \&Fa

.Ic \&Fa

instead, for function return types

.Sx \&Ft ,

.Ic \&Ft ,

and for variable names outside the

.Em SYNOPSIS

section

.Sx \&Va ,

.Ic \&Va ,

even when including a type with the name.

See also

.Sx MANUAL STRUCTURE .

.Ss \&Xc

.It Ic \&Xc

Close a scope opened by

.Sx \&Xo .

.Ic \&Xo .

.Ss \&Xo

.It Ic \&Xo Ar block

Extend the header of an

.Sx \&It

.Ic \&It

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

.It Ic \&Xr Ar name section

Link to another manual

.Pq Qq cross-reference .

Its syntax is as follows:

.Pp

.D1 Pf \. Sx \&Xr Ar name section

.Pp

Cross reference the

.Ar name

and

Line 2738 Examples:

Line 2626 Examples:

.Dl \&.Xr mandoc 1

.Dl \&.Xr mandoc 1 \&;

.Dl \&.Xr mandoc 1 \&Ns s behaviour

.Ss \&br

.El

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

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 is a scaling width as described in

.Xr roff 7 .

If unspecified,

.Sx \&sp

asserts a single vertical space.

.Sh MACRO SYNTAX

The syntax of a macro depends on its classification.

In this section,

Line 2808 column, if applicable, describes closure rules.

Line 2674 column, if applicable, describes closure rules.

.Ss Block full-explicit

Multi-line scope closed by an explicit closing macro.

All macros contains bodies; only

.Sx \&Bf

.Ic \s&Bf

and

.Pq optionally

.Sx \&Bl

.Ic \&Bl

contain a head.

.Bd -literal -offset indent

\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB

Line 2820 contain a head.

Line 2686 contain a head.

.Ed

.Bl -column "MacroX" "CallableX" "ParsedX" "closed by XXX" -offset indent

.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 Ic \&Bd Ta \&No Ta \&No Ta closed by Ic \&Ed

.It Sx \&Bf Ta \&No Ta \&No Ta closed by Sx \&Ef

.It Ic \&Bf Ta \&No Ta \&No Ta closed by Ic \&Ef

.It Sx \&Bk Ta \&No Ta \&No Ta closed by Sx \&Ek

.It Ic \&Bk Ta \&No Ta \&No Ta closed by Ic \&Ek

.It Sx \&Bl Ta \&No Ta \&No Ta closed by Sx \&El

.It Ic \&Bl Ta \&No Ta \&No Ta closed by Ic \&El

.It Sx \&Ed Ta \&No Ta \&No Ta opened by Sx \&Bd

.It Ic \&Ed Ta \&No Ta \&No Ta opened by Ic \&Bd

.It Sx \&Ef Ta \&No Ta \&No Ta opened by Sx \&Bf

.It Ic \&Ef Ta \&No Ta \&No Ta opened by Ic \&Bf

.It Sx \&Ek Ta \&No Ta \&No Ta opened by Sx \&Bk

.It Ic \&Ek Ta \&No Ta \&No Ta opened by Ic \&Bk

.It Sx \&El Ta \&No Ta \&No Ta opened by Sx \&Bl

.It Ic \&El Ta \&No Ta \&No Ta opened by Ic \&Bl

.El

.Ss Block full-implicit

Multi-line scope closed by end-of-file or implicitly by another macro.

All macros have bodies; some

.Po

.Sx \&It Fl bullet ,

.Ic \&It Fl bullet ,

.Fl hyphen ,

.Fl dash ,

.Fl enum ,

Line 2841 All macros have bodies; some

Line 2707 All macros have bodies; some

.Pc

don't have heads; only one

.Po

.Sx \&It

.Ic \&It

.Sx \&Bl Fl column

.Ic \&Bl Fl column

.Pc

has multiple heads.

.Bd -literal -offset indent

Line 2852 has multiple heads.

Line 2718 has multiple heads.

.Ed

.Bl -column "MacroX" "CallableX" "ParsedX" "closed by XXXXXXXXXXX" -offset indent

.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 Ic \&It Ta \&No Ta Yes Ta closed by Ic \&It , Ic \&El

.It Sx \&Nd Ta \&No Ta \&No Ta closed by Sx \&Sh

.It Ic \&Nd Ta \&No Ta \&No Ta closed by Ic \&Sh

.It Sx \&Nm Ta \&No Ta Yes Ta closed by Sx \&Nm , Sx \&Sh , Sx \&Ss

.It Ic \&Nm Ta \&No Ta Yes Ta closed by Ic \&Nm , Ic \&Sh , Ic \&Ss

.It Sx \&Sh Ta \&No Ta Yes Ta closed by Sx \&Sh

.It Ic \&Sh Ta \&No Ta Yes Ta closed by Ic \&Sh

.It Sx \&Ss Ta \&No Ta Yes Ta closed by Sx \&Sh , Sx \&Ss

.It Ic \&Ss Ta \&No Ta Yes Ta closed by Ic \&Sh , Ic \&Ss

.El

.Pp

Note that the

.Sx \&Nm

.Ic \&Nm

macro is a

.Sx Block full-implicit

macro only when invoked as the first macro

Line 2872 section line, else it is

Line 2738 section line, else it is

Like block full-explicit, but also with single-line scope.

Each has at least a body and, in limited circumstances, a head

.Po

.Sx \&Fo ,

.Ic \&Fo ,

.Sx \&Eo

.Ic \&Eo

.Pc

and/or tail

.Pq Sx \&Ec .

.Pq Ic \&Ec .

.Bd -literal -offset indent

\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB

\(lBbody...\(rB

Line 2887 and/or tail

Line 2753 and/or tail

.Ed

.Bl -column "MacroX" "CallableX" "ParsedX" "closed by XXXX" -offset indent

.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 Ic \&Ac Ta Yes Ta Yes Ta opened by Ic \&Ao

.It Sx \&Ao Ta Yes Ta Yes Ta closed by Sx \&Ac

.It Ic \&Ao Ta Yes Ta Yes Ta closed by Ic \&Ac

.It Sx \&Bc Ta Yes Ta Yes Ta closed by Sx \&Bo

.It Ic \&Bc Ta Yes Ta Yes Ta closed by Ic \&Bo

.It Sx \&Bo Ta Yes Ta Yes Ta opened by Sx \&Bc

.It Ic \&Bo Ta Yes Ta Yes Ta opened by Ic \&Bc

.It Sx \&Brc Ta Yes Ta Yes Ta opened by Sx \&Bro

.It Ic \&Brc Ta Yes Ta Yes Ta opened by Ic \&Bro

.It Sx \&Bro Ta Yes Ta Yes Ta closed by Sx \&Brc

.It Ic \&Bro Ta Yes Ta Yes Ta closed by Ic \&Brc

.It Sx \&Dc Ta Yes Ta Yes Ta opened by Sx \&Do

.It Ic \&Dc Ta Yes Ta Yes Ta opened by Ic \&Do

.It Sx \&Do Ta Yes Ta Yes Ta closed by Sx \&Dc

.It Ic \&Do Ta Yes Ta Yes Ta closed by Ic \&Dc

.It Sx \&Ec Ta Yes Ta Yes Ta opened by Sx \&Eo

.It Ic \&Ec Ta Yes Ta Yes Ta opened by Ic \&Eo

.It Sx \&Eo Ta Yes Ta Yes Ta closed by Sx \&Ec

.It Ic \&Eo Ta Yes Ta Yes Ta closed by Ic \&Ec

.It Sx \&Fc Ta Yes Ta Yes Ta opened by Sx \&Fo

.It Ic \&Fc Ta Yes Ta Yes Ta opened by Ic \&Fo

.It Sx \&Fo Ta \&No Ta \&No Ta closed by Sx \&Fc

.It Ic \&Fo Ta \&No Ta \&No Ta closed by Ic \&Fc

.It Sx \&Oc Ta Yes Ta Yes Ta closed by Sx \&Oo

.It Ic \&Oc Ta Yes Ta Yes Ta closed by Ic \&Oo

.It Sx \&Oo Ta Yes Ta Yes Ta opened by Sx \&Oc

.It Ic \&Oo Ta Yes Ta Yes Ta opened by Ic \&Oc

.It Sx \&Pc Ta Yes Ta Yes Ta closed by Sx \&Po

.It Ic \&Pc Ta Yes Ta Yes Ta closed by Ic \&Po

.It Sx \&Po Ta Yes Ta Yes Ta opened by Sx \&Pc

.It Ic \&Po Ta Yes Ta Yes Ta opened by Ic \&Pc

.It Sx \&Qc Ta Yes Ta Yes Ta opened by Sx \&Oo

.It Ic \&Qc Ta Yes Ta Yes Ta opened by Ic \&Oo

.It Sx \&Qo Ta Yes Ta Yes Ta closed by Sx \&Oc

.It Ic \&Qo Ta Yes Ta Yes Ta closed by Ic \&Oc

.It Sx \&Re Ta \&No Ta \&No Ta opened by Sx \&Rs

.It Ic \&Re Ta \&No Ta \&No Ta opened by Ic \&Rs

.It Sx \&Rs Ta \&No Ta \&No Ta closed by Sx \&Re

.It Ic \&Rs Ta \&No Ta \&No Ta closed by Ic \&Re

.It Sx \&Sc Ta Yes Ta Yes Ta opened by Sx \&So

.It Ic \&Sc Ta Yes Ta Yes Ta opened by Ic \&So

.It Sx \&So Ta Yes Ta Yes Ta closed by Sx \&Sc

.It Ic \&So Ta Yes Ta Yes Ta closed by Ic \&Sc

.It Sx \&Xc Ta Yes Ta Yes Ta opened by Sx \&Xo

.It Ic \&Xc Ta Yes Ta Yes Ta opened by Ic \&Xo

.It Sx \&Xo Ta Yes Ta Yes Ta closed by Sx \&Xc

.It Ic \&Xo Ta Yes Ta Yes Ta closed by Ic \&Xc

.El

.Ss Block partial-implicit

Like block full-implicit, but with single-line scope closed by the

Line 2920 end of the line.

Line 2786 end of the line.

.Ed

.Bl -column "MacroX" "CallableX" "ParsedX" -offset indent

.It Em Macro Ta Em Callable Ta Em Parsed

.It Sx \&Aq Ta Yes Ta Yes

.It Ic \&Aq Ta Yes Ta Yes

.It Sx \&Bq Ta Yes Ta Yes

.It Ic \&Bq Ta Yes Ta Yes

.It Sx \&Brq Ta Yes Ta Yes

.It Ic \&Brq Ta Yes Ta Yes

.It Sx \&D1 Ta \&No Ta \&Yes

.It Ic \&D1 Ta \&No Ta \&Yes

.It Sx \&Dl Ta \&No Ta Yes

.It Ic \&Dl Ta \&No Ta Yes

.It Sx \&Dq Ta Yes Ta Yes

.It Ic \&Dq Ta Yes Ta Yes

.It Sx \&En Ta Yes Ta Yes

.It Ic \&En Ta Yes Ta Yes

.It Sx \&Op Ta Yes Ta Yes

.It Ic \&Op Ta Yes Ta Yes

.It Sx \&Pq Ta Yes Ta Yes

.It Ic \&Pq Ta Yes Ta Yes

.It Sx \&Ql Ta Yes Ta Yes

.It Ic \&Ql Ta Yes Ta Yes

.It Sx \&Qq Ta Yes Ta Yes

.It Ic \&Qq Ta Yes Ta Yes

.It Sx \&Sq Ta Yes Ta Yes

.It Ic \&Sq Ta Yes Ta Yes

.It Sx \&Vt Ta Yes Ta Yes

.It Ic \&Vt Ta Yes Ta Yes

.El

.Pp

Note that the

.Sx \&Vt

.Ic \&Vt

macro is a

.Sx Block partial-implicit

only when invoked as the first macro

Line 2946 section line, else it is

Line 2812 section line, else it is

.Sx In-line .

.Ss Special block macro

The

.Sx \&Ta

.Ic \&Ta

macro can only be used below

.Sx \&It

.Ic \&It

.Sx \&Bl Fl column

.Ic \&Bl Fl column

lists.

It delimits blocks representing table cells;

these blocks have bodies, but no heads.

.Bl -column "MacroX" "CallableX" "ParsedX" "closed by XXXX" -offset indent

.It Em Macro Ta Em Callable Ta Em Parsed Ta Em Scope

.It Sx \&Ta Ta Yes Ta Yes Ta closed by Sx \&Ta , Sx \&It

.It Ic \&Ta Ta Yes Ta Yes Ta closed by Ic \&Ta , Ic \&It

.El

.Ss In-line

Closed by the end of the line, fixed argument lengths,

Line 2974 then the macro accepts an arbitrary number of argument

Line 2840 then the macro accepts an arbitrary number of argument

.Ed

.Bl -column "MacroX" "CallableX" "ParsedX" "Arguments" -offset indent

.It Em Macro Ta Em Callable Ta Em Parsed Ta Em Arguments

.It Sx \&%A Ta \&No Ta \&No Ta >0

.It Ic \&%A Ta \&No Ta \&No Ta >0

.It Sx \&%B Ta \&No Ta \&No Ta >0

.It Ic \&%B Ta \&No Ta \&No Ta >0

.It Sx \&%C Ta \&No Ta \&No Ta >0

.It Ic \&%C Ta \&No Ta \&No Ta >0

.It Sx \&%D Ta \&No Ta \&No Ta >0

.It Ic \&%D Ta \&No Ta \&No Ta >0

.It Sx \&%I Ta \&No Ta \&No Ta >0

.It Ic \&%I Ta \&No Ta \&No Ta >0

.It Sx \&%J Ta \&No Ta \&No Ta >0

.It Ic \&%J Ta \&No Ta \&No Ta >0

.It Sx \&%N Ta \&No Ta \&No Ta >0

.It Ic \&%N Ta \&No Ta \&No Ta >0

.It Sx \&%O Ta \&No Ta \&No Ta >0

.It Ic \&%O Ta \&No Ta \&No Ta >0

.It Sx \&%P Ta \&No Ta \&No Ta >0

.It Ic \&%P Ta \&No Ta \&No Ta >0

.It Sx \&%Q Ta \&No Ta \&No Ta >0

.It Ic \&%Q Ta \&No Ta \&No Ta >0

.It Sx \&%R Ta \&No Ta \&No Ta >0

.It Ic \&%R Ta \&No Ta \&No Ta >0

.It Sx \&%T Ta \&No Ta \&No Ta >0

.It Ic \&%T Ta \&No Ta \&No Ta >0

.It Sx \&%U Ta \&No Ta \&No Ta >0

.It Ic \&%U Ta \&No Ta \&No Ta >0

.It Sx \&%V Ta \&No Ta \&No Ta >0

.It Ic \&%V Ta \&No Ta \&No Ta >0

.It Sx \&Ad Ta Yes Ta Yes Ta >0

.It Ic \&Ad Ta Yes Ta Yes Ta >0

.It Sx \&An Ta Yes Ta Yes Ta >0

.It Ic \&An Ta Yes Ta Yes Ta >0

.It Sx \&Ap Ta Yes Ta Yes Ta 0

.It Ic \&Ap Ta Yes Ta Yes Ta 0

.It Sx \&Ar Ta Yes Ta Yes Ta n

.It Ic \&Ar Ta Yes Ta Yes Ta n

.It Sx \&At Ta Yes Ta Yes Ta 1

.It Ic \&At Ta Yes Ta Yes Ta 1

.It Sx \&Bsx Ta Yes Ta Yes Ta n

.It Ic \&Bsx Ta Yes Ta Yes Ta n

.It Sx \&Bt Ta \&No Ta \&No Ta 0

.It Ic \&Bt Ta \&No Ta \&No Ta 0

.It Sx \&Bx Ta Yes Ta Yes Ta n

.It Ic \&Bx Ta Yes Ta Yes Ta n

.It Sx \&Cd Ta Yes Ta Yes Ta >0

.It Ic \&Cd Ta Yes Ta Yes Ta >0

.It Sx \&Cm Ta Yes Ta Yes Ta >0

.It Ic \&Cm Ta Yes Ta Yes Ta >0

.It Sx \&Db Ta \&No Ta \&No Ta 1

.It Ic \&Db Ta \&No Ta \&No Ta 1

.It Sx \&Dd Ta \&No Ta \&No Ta n

.It Ic \&Dd Ta \&No Ta \&No Ta n

.It Sx \&Dt Ta \&No Ta \&No Ta n

.It Ic \&Dt Ta \&No Ta \&No Ta n

.It Sx \&Dv Ta Yes Ta Yes Ta >0

.It Ic \&Dv Ta Yes Ta Yes Ta >0

.It Sx \&Dx Ta Yes Ta Yes Ta n

.It Ic \&Dx Ta Yes Ta Yes Ta n

.It Sx \&Em Ta Yes Ta Yes Ta >0

.It Ic \&Em Ta Yes Ta Yes Ta >0

.It Sx \&Er Ta Yes Ta Yes Ta >0

.It Ic \&Er Ta Yes Ta Yes Ta >0

.It Sx \&Es Ta Yes Ta Yes Ta 2

.It Ic \&Es Ta Yes Ta Yes Ta 2

.It Sx \&Ev Ta Yes Ta Yes Ta >0

.It Ic \&Ev Ta Yes Ta Yes Ta >0

.It Sx \&Ex Ta \&No Ta \&No Ta n

.It Ic \&Ex Ta \&No Ta \&No Ta n

.It Sx \&Fa Ta Yes Ta Yes Ta >0

.It Ic \&Fa Ta Yes Ta Yes Ta >0

.It Sx \&Fd Ta \&No Ta \&No Ta >0

.It Ic \&Fd Ta \&No Ta \&No Ta >0

.It Sx \&Fl Ta Yes Ta Yes Ta n

.It Ic \&Fl Ta Yes Ta Yes Ta n

.It Sx \&Fn Ta Yes Ta Yes Ta >0

.It Ic \&Fn Ta Yes Ta Yes Ta >0

.It Sx \&Fr Ta Yes Ta Yes Ta >0

.It Ic \&Fr Ta Yes Ta Yes Ta >0

.It Sx \&Ft Ta Yes Ta Yes Ta >0

.It Ic \&Ft Ta Yes Ta Yes Ta >0

.It Sx \&Fx Ta Yes Ta Yes Ta n

.It Ic \&Fx Ta Yes Ta Yes Ta n

.It Sx \&Hf Ta \&No Ta \&No Ta n

.It Ic \&Hf Ta \&No Ta \&No Ta n

.It Sx \&Ic Ta Yes Ta Yes Ta >0

.It Ic \&Ic Ta Yes Ta Yes Ta >0

.It Sx \&In Ta \&No Ta \&No Ta 1

.It Ic \&In Ta \&No Ta \&No Ta 1

.It Sx \&Lb Ta \&No Ta \&No Ta 1

.It Ic \&Lb Ta \&No Ta \&No Ta 1

.It Sx \&Li Ta Yes Ta Yes Ta >0

.It Ic \&Li Ta Yes Ta Yes Ta >0

.It Sx \&Lk Ta Yes Ta Yes Ta >0

.It Ic \&Lk Ta Yes Ta Yes Ta >0

.It Sx \&Lp Ta \&No Ta \&No Ta 0

.It Ic \&Lp Ta \&No Ta \&No Ta 0

.It Sx \&Ms Ta Yes Ta Yes Ta >0

.It Ic \&Ms Ta Yes Ta Yes Ta >0

.It Sx \&Mt Ta Yes Ta Yes Ta >0

.It Ic \&Mt Ta Yes Ta Yes Ta >0

.It Sx \&Nm Ta Yes Ta Yes Ta n

.It Ic \&Nm Ta Yes Ta Yes Ta n

.It Sx \&No Ta Yes Ta Yes Ta 0

.It Ic \&No Ta Yes Ta Yes Ta 0

.It Sx \&Ns Ta Yes Ta Yes Ta 0

.It Ic \&Ns Ta Yes Ta Yes Ta 0

.It Sx \&Nx Ta Yes Ta Yes Ta n

.It Ic \&Nx Ta Yes Ta Yes Ta n

.It Sx \&Os Ta \&No Ta \&No Ta n

.It Ic \&Os Ta \&No Ta \&No Ta n

.It Sx \&Ot Ta Yes Ta Yes Ta >0

.It Ic \&Ot Ta Yes Ta Yes Ta >0

.It Sx \&Ox Ta Yes Ta Yes Ta n

.It Ic \&Ox Ta Yes Ta Yes Ta n

.It Sx \&Pa Ta Yes Ta Yes Ta n

.It Ic \&Pa Ta Yes Ta Yes Ta n

.It Sx \&Pf Ta Yes Ta Yes Ta 1

.It Ic \&Pf Ta Yes Ta Yes Ta 1

.It Sx \&Pp Ta \&No Ta \&No Ta 0

.It Ic \&Pp Ta \&No Ta \&No Ta 0

.It Sx \&Rv Ta \&No Ta \&No Ta n

.It Ic \&Rv Ta \&No Ta \&No Ta n

.It Sx \&Sm Ta \&No Ta \&No Ta <2

.It Ic \&Sm Ta \&No Ta \&No Ta <2

.It Sx \&St Ta \&No Ta Yes Ta 1

.It Ic \&St Ta \&No Ta Yes Ta 1

.It Sx \&Sx Ta Yes Ta Yes Ta >0

.It Ic \&Sx Ta Yes Ta Yes Ta >0

.It Sx \&Sy Ta Yes Ta Yes Ta >0

.It Ic \&Sy Ta Yes Ta Yes Ta >0

.It Sx \&Tn Ta Yes Ta Yes Ta >0

.It Ic \&Tn Ta Yes Ta Yes Ta >0

.It Sx \&Ud Ta \&No Ta \&No Ta 0

.It Ic \&Ud Ta \&No Ta \&No Ta 0

.It Sx \&Ux Ta Yes Ta Yes Ta n

.It Ic \&Ux Ta Yes Ta Yes Ta n

.It Sx \&Va Ta Yes Ta Yes Ta n

.It Ic \&Va Ta Yes Ta Yes Ta n

.It Sx \&Vt Ta Yes Ta Yes Ta >0

.It Ic \&Vt Ta Yes Ta Yes Ta >0

.It Sx \&Xr Ta Yes Ta Yes Ta 2

.It Ic \&Xr Ta Yes Ta Yes Ta 2

.It Sx \&br Ta \&No Ta \&No Ta 0

.It Sx \&sp Ta \&No Ta \&No Ta 1

.El

.Ss Delimiters

When a macro argument consists of one single input character

Line 3161 The following problematic behaviour is found in groff:

Line 3025 The following problematic behaviour is found in groff:

.Pp

.Bl -dash -compact

.It

.Sx \&Dd

.Ic \&Dd

with non-standard arguments behaves very strangely.

When there are three arguments, they are printed verbatim.

Any other number of arguments is replaced by the current date,

Line 3169 but without any arguments the string

Line 3033 but without any arguments the string

.Dq Epoch

is printed.

.It

.Sx \&Lk

.Ic \&Lk

only accepts a single link-name argument; the remainder is misformatted.

.It

.Sx \&Pa

.Ic \&Pa

does not format its arguments when used in the FILES section under

certain list types.

.It

.Sx \&Ta

.Ic \&Ta

can only be called by other macros, but not at the beginning of a line.

.It

.Sx \&%C

.Ic \&%C

is not implemented (up to and including groff-1.22.2).

.It

.Sq \ef

Line 3198 The following features are unimplemented in mandoc:

Line 3062 The following features are unimplemented in mandoc:

.Pp

.Bl -dash -compact

.It

.Sx \&Bd

.Ic \&Bd Fl file Ar file

.Fl file Ar file

is unsupported for security reasons.

.It

.Sx \&Bd

.Ic \&Bd

.Fl filled

does not adjust the right margin, but is an alias for

.Sx \&Bd

.Ic \&Bd

.Fl ragged .

.It

.Sx \&Bd

.Ic \&Bd

.Fl literal

does not use a literal font, but is an alias for

.Sx \&Bd

.Ic \&Bd

.Fl unfilled .

.It

.Sx \&Bd

.Ic \&Bd

.Fl offset Cm center

and

.Fl offset Cm right

Line 3232 but produces large indentations.

Line 3095 but produces large indentations.

.Xr tbl 7

.Pp

The web page

.Lk http://mdocml.bsd.lv/mdoc/ "extended documentation for the mdoc language"

.Lk http://mandoc.bsd.lv/mdoc/ "extended documentation for the mdoc language"

provides a few tutorial-style pages for beginners, an extensive style

guide for advanced authors, and an alphabetic index helping to choose

the best macros for various kinds of content.

CVSweb