Sevan Janiyan resigned from the NetBSD project and pkgsrc in 2020.

[mandoc.git] / mdoc.7

diff --git a/mdoc.7 b/mdoc.7
index a4bf6c917459aadb65eaa29f6005f3f97ed32971..7ac6ff11c00d2051bebf6c94600bb171cb0af5b2 100644 (file)
--- a/mdoc.7
+++ b/mdoc.7
@@ -1,7 +1,7 @@
-.\"    $Id: mdoc.7,v 1.247 2014/12/31 20:42:31 schwarze Exp $
+.\"    $Id: mdoc.7,v 1.287 2021/07/29 17:32:01 schwarze Exp $

 .\"
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 .\"
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>

-.\" Copyright (c) 2010, 2011, 2013 Ingo Schwarze <schwarze@openbsd.org>
+.\" Copyright (c) 2010, 2011, 2013-2020 Ingo Schwarze <schwarze@openbsd.org>

 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above


@@ -15,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"

-.Dd $Mdocdate: December 31 2014 $
+.Dd $Mdocdate: July 29 2021 $

 .Dt MDOC 7
 .Os
 .Sh NAME
 .Dt MDOC 7
 .Os
 .Sh NAME


@@ -94,18 +94,18 @@ document consists of a document prologue followed by one or more
 sections.
 .Pp
 The prologue, which consists of the
 sections.
 .Pp
 The prologue, which consists of the

-.Sx \&Dd ,
-.Sx \&Dt ,
+.Ic \&Dd ,
+.Ic \&Dt ,

 and
 and

-.Sx \&Os
+.Ic \&Os

 macros in that order, is required for every document.
 .Pp
 The first section (sections are denoted by
 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
 must be the NAME section, consisting of at least one

-.Sx \&Nm
+.Ic \&Nm

 followed by
 followed by

-.Sx \&Nd .
+.Ic \&Nd .

 .Pp
 Following that, convention dictates specifying at least the
 .Em SYNOPSIS
 .Pp
 Following that, convention dictates specifying at least the
 .Em SYNOPSIS


@@ -182,15 +182,15 @@ Multiple
 names should be separated by commas.
 .Pp
 The
 names should be separated by commas.
 .Pp
 The

-.Sx \&Nm
+.Ic \&Nm

 macro(s) must precede the
 macro(s) must precede the

-.Sx \&Nd
+.Ic \&Nd

 macro.
 .Pp
 See
 macro.
 .Pp
 See

-.Sx \&Nm
+.Ic \&Nm

 and
 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.
 .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.


@@ -200,7 +200,7 @@ The syntax for this is as follows:
 .Ed
 .Pp
 See
 .Ed
 .Pp
 See

-.Sx \&Lb .
+.Ic \&Lb .

 .It Em SYNOPSIS
 Documents the utility invocation syntax, function call syntax, or device
 configuration.
 .It Em SYNOPSIS
 Documents the utility invocation syntax, function call syntax, or device
 configuration.


@@ -231,11 +231,11 @@ For the second, function calls (sections 2, 3, 9):
 .Ed
 .Pp
 Ordering of
 .Ed
 .Pp
 Ordering of

-.Sx \&In ,
-.Sx \&Vt ,
-.Sx \&Fn ,
+.Ic \&In ,
+.Ic \&Vt ,
+.Ic \&Fn ,

 and
 and

-.Sx \&Fo
+.Ic \&Fo

 macros should follow C header-file conventions.
 .Pp
 And for the third, configurations (section 4):
 macros should follow C header-file conventions.
 .Pp
 And for the third, configurations (section 4):


@@ -250,40 +250,40 @@ Manuals not in these sections generally don't need a
 Some macros are displayed differently in the
 .Em SYNOPSIS
 section, particularly
 Some macros are displayed differently in the
 .Em SYNOPSIS
 section, particularly

-.Sx \&Nm ,
-.Sx \&Cd ,
-.Sx \&Fd ,
-.Sx \&Fn ,
-.Sx \&Fo ,
-.Sx \&In ,
-.Sx \&Vt ,
+.Ic \&Nm ,
+.Ic \&Cd ,
+.Ic \&Fd ,
+.Ic \&Fn ,
+.Ic \&Fo ,
+.Ic \&In ,
+.Ic \&Vt ,

 and
 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
 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
 before

-.Sx \&Fo
+.Ic \&Fo

 or
 or

-.Sx \&Fn ) ,
+.Ic \&Fn ) ,

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

-.Sx \&Fo ,
-.Sx \&Fn ,
+.Ic \&Fo ,
+.Ic \&Fn ,

 and
 and

-.Sx \&Ft ,
+.Ic \&Ft ,

 which are always separated by vertical space.
 .Pp
 When text and macros following an
 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
 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
 macro, up to the next

-.Sx \&Nm ,
-.Sx \&Sh ,
+.Ic \&Nm ,
+.Ic \&Sh ,

 or
 or

-.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
 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


@@ -297,25 +297,30 @@ utility does this, that, and the other.
 It usually follows with a breakdown of the options (if documenting a
 command), such as:
 .Bd -literal -offset indent
 It usually follows with a breakdown of the options (if documenting a
 command), such as:
 .Bd -literal -offset indent

-The arguments are as follows:
+The options are as follows:

 \&.Bl \-tag \-width Ds
 \&.It Fl v
 Print verbose information.
 \&.El
 .Ed
 .Pp
 \&.Bl \-tag \-width Ds
 \&.It Fl v
 Print verbose information.
 \&.El
 .Ed
 .Pp

+List the options in alphabetical order,
+uppercase before lowercase for each letter and
+with no regard to whether an option takes an argument.
+Put digits in ascending order before all letter options.
+.Pp

 Manuals not documenting a command won't include the above fragment.
 .Pp
 Since the
 .Em DESCRIPTION
 section usually contains most of the text of a manual, longer manuals
 often use the
 Manuals not documenting a command won't include the above fragment.
 .Pp
 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
 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
 macro followed by a non-standard section name, and each having
 several subsections, like in the present
 .Nm


@@ -332,7 +337,7 @@ This section documents the
 return values of functions in sections 2, 3, and 9.
 .Pp
 See
 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.
 .It Em ENVIRONMENT
 Lists the environment variables used by the utility,
 and explains the syntax and semantics of their values.


@@ -341,14 +346,14 @@ The
 manual provides examples of typical content and formatting.
 .Pp
 See
 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
 .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.
 .It Em EXIT STATUS
 This section documents the
 command exit status for section 1, 6, and 8 utilities.


@@ -357,7 +362,7 @@ Historically, this information was described in
 a practise that is now discouraged.
 .Pp
 See
 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.
 .It Em EXAMPLES
 Example usages.
 This often contains snippets of well-formed, well-tested invocations.


@@ -375,7 +380,7 @@ for manuals in sections 1, 6, and 8; however, this practise is
 discouraged.
 .Pp
 See
 discouraged.
 .Pp
 See

-.Sx \&Bl
+.Ic \&Bl

 .Fl diag .
 .It Em ERRORS
 Documents
 .Fl diag .
 .It Em ERRORS
 Documents


@@ -383,7 +388,7 @@ Documents
 settings in sections 2, 3, 4, and 9.
 .Pp
 See
 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.
 .It Em SEE ALSO
 References other manuals with related topics.
 This section should exist for most manuals.


@@ -395,9 +400,9 @@ for example authoritative books or journal articles, may also be
 provided in this section.
 .Pp
 See
 provided in this section.
 .Pp
 See

-.Sx \&Rs
+.Ic \&Rs

 and
 and

-.Sx \&Xr .
+.Ic \&Xr .

 .It Em STANDARDS
 References any standards implemented or used.
 If not adhering to any standards, the
 .It Em STANDARDS
 References any standards implemented or used.
 If not adhering to any standards, the


@@ -405,7 +410,7 @@ If not adhering to any standards, the
 section should be used instead.
 .Pp
 See
 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.
 .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.


@@ -414,7 +419,7 @@ Credits to the person or persons who wrote the code and/or documentation.
 Authors should generally be noted by both name and email address.
 .Pp
 See
 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.
 .It Em CAVEATS
 Common misuses and misunderstandings should be explained
 in this section.


@@ -432,210 +437,211 @@ in the alphabetical
 .Sx MACRO REFERENCE .
 .Ss Document preamble and NAME section macros
 .Bl -column "Brq, Bro, Brc" description
 .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 Sx \&Dt Ta document title: Ar TITLE section Op Ar arch
-.It Sx \&Os Ta operating system version: Op Ar system Op Ar version
-.It Sx \&Nm Ta document name (one argument)
-.It Sx \&Nd Ta document description (one line)
+.It Ic \&Dd Ta document date: Cm $\&Mdocdate$ | Ar month day , year
+.It Ic \&Dt Ta document title: Ar TITLE section Op Ar arch
+.It Ic \&Os Ta operating system version: Op Ar system Op Ar version
+.It Ic \&Nm Ta document name (one argument)
+.It Ic \&Nd Ta document description (one line)

 .El
 .Ss Sections and cross references
 .Bl -column "Brq, Bro, Brc" description
 .El
 .Ss Sections and cross references
 .Bl -column "Brq, Bro, Brc" description

-.It Sx \&Sh Ta section header (one line)
-.It Sx \&Ss Ta subsection header (one line)
-.It Sx \&Sx Ta internal cross reference to a section or subsection
-.It Sx \&Xr Ta cross reference to another manual page: Ar name section
-.It Sx \&Pp , \&Lp Ta start a text paragraph (no arguments)
+.It Ic \&Sh Ta section header (one line)
+.It Ic \&Ss Ta subsection header (one line)
+.It Ic \&Sx Ta internal cross reference to a section or subsection
+.It Ic \&Xr Ta cross reference to another manual page: Ar name section
+.It Ic \&Tg Ta tag the definition of a Ar term Pq <= 1 arguments
+.It Ic \&Pp Ta start a text paragraph (no arguments)

 .El
 .Ss Displays and lists
 .Bl -column "Brq, Bro, Brc" description
 .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
 .Fl Ar type
 .Op Fl offset Ar width
 .Op Fl compact

-.It Sx \&D1 Ta indented display (one line)
-.It Sx \&Dl Ta indented literal display (one line)
-.It Sx \&Bl , \&El Ta list block:
+.It Ic \&D1 Ta indented display (one line)
+.It Ic \&Dl Ta indented literal display (one line)
+.It Ic \&Ql Ta in-line literal display: Ql text
+.It Ic \&Bl , \&El Ta list block:

 .Fl Ar type
 .Op Fl width Ar val
 .Op Fl offset Ar val
 .Op Fl compact
 .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 Sx \&Ta Ta table cell separator in Sx \&Bl Fl column No lists
-.It Sx \&Rs , \&%* , \&Re Ta bibliographic block (references)
+.It Ic \&It Ta list item (syntax depends on Fl Ar type )
+.It Ic \&Ta Ta table cell separator in Ic \&Bl Fl column No lists
+.It Ic \&Rs , \&%* , \&Re Ta bibliographic block (references)

 .El
 .Ss Spacing control
 .Bl -column "Brq, Bro, Brc" description
 .El
 .Ss Spacing control
 .Bl -column "Brq, Bro, Brc" description

-.It Sx \&Pf Ta prefix, no following horizontal space (one argument)
-.It Sx \&Ns Ta roman font, no preceding horizontal space (no arguments)
-.It Sx \&Ap Ta apostrophe without surrounding whitespace (no arguments)
-.It Sx \&Sm Ta switch horizontal spacing mode: Op Cm on | off
-.It Sx \&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
+.It Ic \&Pf Ta prefix, no following horizontal space (one argument)
+.It Ic \&Ns Ta roman font, no preceding horizontal space (no arguments)
+.It Ic \&Ap Ta apostrophe without surrounding whitespace (no arguments)
+.It Ic \&Sm Ta switch horizontal spacing mode: Op Cm on | off
+.It Ic \&Bk , \&Ek Ta keep block: Fl words

 .El
 .El

-.Ss Semantic markup for command line utilities:
+.Ss Semantic markup for command line utilities

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

-.It Sx \&Nm Ta start a SYNOPSIS block with the name of a utility
-.It Sx \&Fl Ta command line options (flags) (>=0 arguments)
-.It Sx \&Cm Ta command modifier (>0 arguments)
-.It Sx \&Ar Ta command arguments (>=0 arguments)
-.It Sx \&Op , \&Oo , \&Oc Ta optional syntax elements (enclosure)
-.It Sx \&Ic Ta internal or interactive command (>0 arguments)
-.It Sx \&Ev Ta environmental variable (>0 arguments)
-.It Sx \&Pa Ta file system path (>=0 arguments)
+.It Ic \&Nm Ta start a SYNOPSIS block with the name of a utility
+.It Ic \&Fl Ta command line options (flags) (>=0 arguments)
+.It Ic \&Cm Ta command modifier (>0 arguments)
+.It Ic \&Ar Ta command arguments (>=0 arguments)
+.It Ic \&Op , \&Oo , \&Oc Ta optional syntax elements (enclosure)
+.It Ic \&Ic Ta internal or interactive command (>0 arguments)
+.It Ic \&Ev Ta environmental variable (>0 arguments)
+.It Ic \&Pa Ta file system path (>=0 arguments)

 .El
 .El

-.Ss Semantic markup for function libraries:
+.Ss Semantic markup for function libraries

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

-.It Sx \&Lb Ta function library (one argument)
-.It Sx \&In Ta include file (one argument)
-.It Sx \&Fd Ta other preprocessor directive (>0 arguments)
-.It Sx \&Ft Ta function type (>0 arguments)
-.It Sx \&Fo , \&Fc Ta function block: Ar funcname
-.It Sx \&Fn Ta function name:
-.Op Ar functype
-.Ar funcname
-.Oo
-.Op Ar argtype
-.Ar argname
-.Oc
-.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)
+.It Ic \&Lb Ta function library (one argument)
+.It Ic \&In Ta include file (one argument)
+.It Ic \&Fd Ta other preprocessor directive (>0 arguments)
+.It Ic \&Ft Ta function type (>0 arguments)
+.It Ic \&Fo , \&Fc Ta function block: Ar funcname
+.It Ic \&Fn Ta function name: Ar funcname Op Ar argument ...
+.It Ic \&Fa Ta function argument (>0 arguments)
+.It Ic \&Vt Ta variable type (>0 arguments)
+.It Ic \&Va Ta variable name (>0 arguments)
+.It Ic \&Dv Ta defined variable or preprocessor constant (>0 arguments)
+.It Ic \&Er Ta error constant (>0 arguments)
+.It Ic \&Ev Ta environmental variable (>0 arguments)

 .El
 .El

-.Ss Various semantic markup:
+.Ss Various semantic markup

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

-.It Sx \&An Ta author name (>0 arguments)
-.It Sx \&Lk Ta hyperlink: Ar uri Op Ar name
-.It Sx \&Mt Ta Do mailto Dc hyperlink: Ar address
-.It Sx \&Cd Ta kernel configuration declaration (>0 arguments)
-.It Sx \&Ad Ta memory address (>0 arguments)
-.It Sx \&Ms Ta mathematical symbol (>0 arguments)
+.It Ic \&An Ta author name (>0 arguments)
+.It Ic \&Lk Ta hyperlink: Ar uri Op Ar display_name
+.It Ic \&Mt Ta Do mailto Dc hyperlink: Ar localpart Ns @ Ns Ar domain
+.It Ic \&Cd Ta kernel configuration declaration (>0 arguments)
+.It Ic \&Ad Ta memory address (>0 arguments)
+.It Ic \&Ms Ta mathematical symbol (>0 arguments)

 .El
 .Ss Physical markup
 .Bl -column "Brq, Bro, Brc" description
 .El
 .Ss Physical markup
 .Bl -column "Brq, Bro, Brc" description

-.It Sx \&Em Ta italic font or underline (emphasis) (>0 arguments)
-.It Sx \&Sy Ta boldface font (symbolic) (>0 arguments)
-.It Sx \&Li Ta typewriter font (literal) (>0 arguments)
-.It Sx \&No Ta return to roman font (normal) (no arguments)
-.It Sx \&Bf , \&Ef Ta font block:
-.Op Fl Ar type | Cm \&Em | \&Li | \&Sy
+.It Ic \&Em Ta italic font or underline (emphasis) (>0 arguments)
+.It Ic \&Sy Ta boldface font (symbolic) (>0 arguments)
+.It Ic \&No Ta return to roman font (normal) (>0 arguments)
+.It Ic \&Bf , \&Ef Ta font block: Fl Ar type | Cm \&Em | \&Li | \&Sy

 .El
 .Ss Physical enclosures
 .Bl -column "Brq, Bro, Brc" description
 .El
 .Ss Physical enclosures
 .Bl -column "Brq, Bro, Brc" description

-.It Sx \&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 Sx \&Sq , \&So , \&Sc Ta enclose in single quotes: Sq text
-.It Sx \&Ql Ta single-quoted literal text: Ql text
-.It Sx \&Pq , \&Po , \&Pc Ta enclose in parentheses: Pq text
-.It Sx \&Bq , \&Bo , \&Bc Ta enclose in square brackets: Bq text
-.It Sx \&Brq , \&Bro , \&Brc Ta enclose in curly braces: Brq text
-.It Sx \&Aq , \&Ao , \&Ac Ta enclose in angle brackets: Aq text
-.It Sx \&Eo , \&Ec Ta generic enclosure
+.It Ic \&Dq , \&Do , \&Dc Ta enclose in typographic double quotes: Dq text
+.It Ic \&Qq , \&Qo , \&Qc Ta enclose in typewriter double quotes: Qq text
+.It Ic \&Sq , \&So , \&Sc Ta enclose in single quotes: Sq text
+.It Ic \&Pq , \&Po , \&Pc Ta enclose in parentheses: Pq text
+.It Ic \&Bq , \&Bo , \&Bc Ta enclose in square brackets: Bq text
+.It Ic \&Brq , \&Bro , \&Brc Ta enclose in curly braces: Brq text
+.It Ic \&Aq , \&Ao , \&Ac Ta enclose in angle brackets: Aq text
+.It Ic \&Eo , \&Ec Ta generic enclosure

 .El
 .Ss Text production
 .Bl -column "Brq, Bro, Brc" description
 .El
 .Ss Text production
 .Bl -column "Brq, Bro, Brc" description

-.It Sx \&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 Sx \&St Ta reference to a standards document (one argument)
-.It Sx \&At Ta At
-.It Sx \&Bx Ta Bx
-.It Sx \&Bsx Ta Bsx
-.It Sx \&Nx Ta Nx
-.It Sx \&Fx Ta Fx
-.It Sx \&Ox Ta Ox
-.It Sx \&Dx Ta Dx
+.It Ic \&Ex Fl std Ta standard command exit values: Op Ar utility ...
+.It Ic \&Rv Fl std Ta standard function return values: Op Ar function ...
+.It Ic \&St Ta reference to a standards document (one argument)
+.It Ic \&At Ta At
+.It Ic \&Bx Ta Bx
+.It Ic \&Bsx Ta Bsx
+.It Ic \&Nx Ta Nx
+.It Ic \&Fx Ta Fx
+.It Ic \&Ox Ta Ox
+.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 .
 .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
 Author name of an

-.Sx \&Rs
+.Ic \&Rs

 block.
 Multiple authors should each be accorded their own
 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.
 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
 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.
 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
 Publication city or location of an

-.Sx \&Rs
+.Ic \&Rs

 block.
 block.

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

 Publication date of an
 Publication date of an

-.Sx \&Rs
+.Ic \&Rs

 block.
 block.

-Recommended formats of arguments are
-.Ar month day , year
-or just
+Provide the full English name of the
+.Ar month
+and all four digits of the

 .Ar year .
 .Ar year .

-.Ss \&%I
+.It Ic \&%I Ar name

 Publisher or issuer name of an
 Publisher or issuer name of an

-.Sx \&Rs
+.Ic \&Rs

 block.
 block.

-.Ss \&%J
+.It Ic \&%J Ar name

 Journal name of an
 Journal name of an

-.Sx \&Rs
+.Ic \&Rs

 block.
 block.

-.Ss \&%N
+.It Ic \&%N Ar number

 Issue number (usually for journals) of an
 Issue number (usually for journals) of an

-.Sx \&Rs
+.Ic \&Rs

 block.
 block.

-.Ss \&%O
+.It Ic \&%O Ar line

 Optional information of an
 Optional information of an

-.Sx \&Rs
+.Ic \&Rs

 block.
 block.

-.Ss \&%P
+.It Ic \&%P Ar number

 Book or journal page number of an
 Book or journal page number of an

-.Sx \&Rs
+.Ic \&Rs

 block.
 block.

-.Ss \&%Q
+Conventionally, the argument starts with
+.Ql p.\&
+for a single page or
+.Ql pp.\&
+for a range of pages, for example:
+.Pp
+.Dl .%P pp. 42\e(en47
+.It Ic \&%Q Ar name

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

-.Sx \&Rs
+.Ic \&Rs

 block.
 Multiple institutional authors should each be accorded their own
 block.
 Multiple institutional authors should each be accorded their own

-.Sx \&%Q
+.Ic \&%Q

 line.
 line.

-.Ss \&%R
+.It Ic \&%R Ar name

 Technical report name of an
 Technical report name of an

-.Sx \&Rs
+.Ic \&Rs

 block.
 block.

-.Ss \&%T
+.It Ic \&%T Ar title

 Article title of an
 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.
 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.
 URI of reference document.

-.Ss \&%V
+.It Ic \&%V Ar number

 Volume number of an
 Volume number of an

-.Sx \&Rs
+.Ic \&Rs

 block.
 block.

-.Ss \&Ac
+.It Ic \&Ac

 Close an
 Close an

-.Sx \&Ao
+.Ic \&Ao

 block.
 Does not have any tail arguments.
 block.
 Does not have any tail arguments.

-.Ss \&Ad
+.Tg Ad
+.It Ic \&Ad Ar address

 Memory address.
 Do not use this for postal addresses.
 .Pp
 Examples:
 .Dl \&.Ad [0,$]
 .Dl \&.Ad 0x00000000
 Memory address.
 Do not use this for postal addresses.
 .Pp
 Examples:
 .Dl \&.Ad [0,$]
 .Dl \&.Ad 0x00000000

-.Ss \&An
+.Tg 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.
 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.


@@ -644,7 +650,7 @@ Requires either the name of an author or one of the following arguments:
 .Bl -tag -width "-nosplitX" -offset indent -compact
 .It Fl split
 Start a new output line before each subsequent invocation of
 .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 .
 .It Fl nosplit
 The opposite of
 .Fl split .


@@ -668,41 +674,68 @@ for all other author listings.
 Examples:
 .Dl \&.An -nosplit
 .Dl \&.An Kristaps Dzonsons \&Aq \&Mt kristaps@bsd.lv
 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.
 Begin a block enclosed by angle brackets.
 Does not have any head arguments.

-.Pp
-Examples:
-.Dl \&.Fl -key= \&Ns \&Ao \&Ar val \&Ac
-.Pp
-See also
-.Sx \&Aq .
-.Ss \&Ap
+This macro is almost never useful.
+See
+.Ic \&Aq
+for more details.
+.Tg Ap
+.It Ic \&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
 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
-Encloses its arguments in angle brackets.
+.Tg Aq
+.It Ic \&Aq Ar line
+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
 .Pp

-Examples:
-.Dl \&.Fl -key= \&Ns \&Aq \&Ar val
+Occasionally, it is used for names of characters and keys, for example:
+.Bd -literal -offset indent
+Press the
+\&.Aq escape
+key to ...
+.Ed

 .Pp
 .Pp

-.Em Remarks :
-this macro is often abused for rendering URIs, which should instead use
-.Sx \&Lk
+For URIs, use
+.Ic \&Lk
+instead, and
+.Ic \&In
+for
+.Dq #include
+directives.
+Never wrap
+.Ic \&Ar
+in
+.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 ,

 or
 or

-.Sx \&Mt ,
-or to note pre-processor
-.Dq Li #include
-statements, which should use
-.Sx \&In .
+.Ic \&Eo
+as needed.

 .Pp
 See also
 .Pp
 See also

-.Sx \&Ao .
-.Ss \&Ar
+.Ic \&Ao .
+.Tg Ar
+.It Ic \&Ar Op Ar placeholder ...

 Command arguments.
 If an argument is not provided, the string
 .Dq file ...\&
 Command arguments.
 If an argument is not provided, the string
 .Dq file ...\&


@@ -714,13 +747,14 @@ Examples:
 .Dl ".Ar arg1 , arg2 ."
 .Pp
 The arguments to the
 .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
 macro are names and placeholders for command arguments;
 for fixed strings to be passed verbatim as arguments, use

-.Sx \&Fl
+.Ic \&Fl

 or
 or

-.Sx \&Cm .
-.Ss \&At
+.Ic \&Cm .
+.Tg At
+.It Ic \&At Op Ar version

 Formats an
 .At
 version.
 Formats an
 .At
 version.


@@ -732,7 +766,7 @@ A version of
 .At .
 .It Cm III
 .At III .
 .At .
 .It Cm III
 .At III .

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

 A version of
 .At V .
 .El
 A version of
 .At V .
 .El


@@ -745,28 +779,21 @@ Examples:
 .Dl \&.At V.1
 .Pp
 See also
 .Dl \&.At V.1
 .Pp
 See also

-.Sx \&Bsx ,
-.Sx \&Bx ,
-.Sx \&Dx ,
-.Sx \&Fx ,
-.Sx \&Nx ,
+.Ic \&Bsx ,
+.Ic \&Bx ,
+.Ic \&Dx ,
+.Ic \&Fx ,
+.Ic \&Nx ,

 and
 and

-.Sx \&Ox .
-.Ss \&Bc
+.Ic \&Ox .
+.It Ic \&Bc

 Close a
 Close a

-.Sx \&Bo
+.Ic \&Bo

 block.
 Does not have any tail arguments.
 block.
 Does not have any tail arguments.

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

 Begin a display block.
 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.
 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.


@@ -777,7 +804,7 @@ The
 must be one of the following:
 .Bl -tag -width 13n -offset indent
 .It Fl centered
 must be one of the following:
 .Bl -tag -width 13n -offset indent
 .It Fl centered

-Produce one output line from each input line, and centre-justify each line.
+Produce one output line from each input line, and center-justify each line.

 Using this display type is not recommended; many
 .Nm
 implementations render it poorly.
 Using this display type is not recommended; many
 .Nm
 implementations render it poorly.


@@ -822,7 +849,7 @@ which has no effect;
 .Cm right ,
 which justifies to the right margin; or
 .Cm center ,
 .Cm right ,
 which justifies to the right margin; or
 .Cm center ,

-which aligns around an imagined centre axis.
+which aligns around an imagined center axis.

 .It
 A macro invocation, which selects a predefined width
 associated with that macro.
 .It
 A macro invocation, which selects a predefined width
 associated with that macro.


@@ -852,20 +879,12 @@ Examples:
 .Ed
 .Pp
 See also
 .Ed
 .Pp
 See also

-.Sx \&D1
+.Ic \&D1

 and
 and

-.Sx \&Dl .
-.Ss \&Bf
+.Ic \&Dl .
+.Tg Bf
+.It Ic \&Bf Fl emphasis | literal | symbolic | Cm \&Em | \&Li | \&Sy

 Change the font mode for a scoped block of text.
 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
 The
 .Fl emphasis
 and


@@ -881,30 +900,28 @@ and
 Without an argument, this macro does nothing.
 The font mode continues until broken by a new font mode in a nested
 scope or
 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
 is encountered.
 .Pp
 See also

-.Sx \&Li ,
-.Sx \&Ef ,
-.Sx \&Em ,
+.Ic \&Li ,
+.Ic \&Ef ,
+.Ic \&Em ,

 and
 and

-.Sx \&Sy .
-.Ss \&Bk
+.Ic \&Sy .
+.Tg 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.
 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
 .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
 macro line:
 .Bd -literal -offset indent
 \&.Bk \-words


@@ -915,20 +932,19 @@ macro line:
 .Pp
 Be careful in using over-long lines within a keep block!
 Doing so will clobber the right margin.
 .Pp
 Be careful in using over-long lines within a keep block!
 Doing so will clobber the right margin.

-.Ss \&Bl
-Begin a list.
-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
+.Tg Bl
+.It Xo
+.Ic \&Bl

 .Fl Ns Ar type
 .Op Fl width Ar val
 .Op Fl offset Ar val
 .Op Fl compact
 .Fl Ns Ar type
 .Op Fl width Ar val
 .Op Fl offset Ar val
 .Op Fl compact

-.Op HEAD ...
-.Ed
+.Op Ar col ...
+.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
 .Pp
 The list
 .Ar type


@@ -938,7 +954,7 @@ The
 and
 .Fl offset
 arguments accept macro names as described for
 and
 .Fl offset
 arguments accept macro names as described for

-.Sx \&Bd
+.Ic \&Bd

 .Fl offset ,
 scaling widths as described in
 .Xr roff 7 ,
 .Fl offset ,
 scaling widths as described in
 .Xr roff 7 ,


@@ -969,21 +985,19 @@ argument.
 A columnated list.
 The
 .Fl width
 A columnated list.
 The
 .Fl width

-argument has no effect; instead, each argument specifies the width
-of one column, using either the scaling width syntax described in
-.Xr roff 7
-or the string length of the argument.
+argument has no effect; instead, the string length of each argument
+specifies the width of one column.

 If the first line of the body of a
 .Fl column
 list is not an
 If the first line of the body of a
 .Fl column
 list is not an

-.Sx \&It
+.Ic \&It

 macro line,
 macro line,

-.Sx \&It
+.Ic \&It

 contexts spanning one input line each are implied until an
 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
 macro line is encountered, at which point items start being interpreted as
 described in the

-.Sx \&It
+.Ic \&It

 documentation.
 .It Fl dash
 Like
 documentation.
 .It Fl dash
 Like


@@ -1046,10 +1060,10 @@ and
 lists may not be portable.
 .Pp
 See also
 lists may not be portable.
 .Pp
 See also

-.Sx \&El
+.Ic \&El

 and
 and

-.Sx \&It .
-.Ss \&Bo
+.Ic \&It .
+.It Ic \&Bo Ar block

 Begin a block enclosed by square brackets.
 Does not have any head arguments.
 .Pp
 Begin a block enclosed by square brackets.
 Does not have any head arguments.
 .Pp


@@ -1060,8 +1074,9 @@ Examples:
 .Ed
 .Pp
 See also
 .Ed
 .Pp
 See also

-.Sx \&Bq .
-.Ss \&Bq
+.Ic \&Bq .
+.Tg Bq
+.It Ic \&Bq Ar line

 Encloses its arguments in square brackets.
 .Pp
 Examples:
 Encloses its arguments in square brackets.
 .Pp
 Examples:


@@ -1070,19 +1085,19 @@ Examples:
 .Em Remarks :
 this macro is sometimes abused to emulate optional arguments for
 commands; the correct macros to use for this purpose are
 .Em Remarks :
 this macro is sometimes abused to emulate optional arguments for
 commands; the correct macros to use for this purpose are

-.Sx \&Op ,
-.Sx \&Oo ,
+.Ic \&Op ,
+.Ic \&Oo ,

 and
 and

-.Sx \&Oc .
+.Ic \&Oc .

 .Pp
 See also
 .Pp
 See also

-.Sx \&Bo .
-.Ss \&Brc
+.Ic \&Bo .
+.It Ic \&Brc

 Close a
 Close a

-.Sx \&Bro
+.Ic \&Bro

 block.
 Does not have any tail arguments.
 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
 Begin a block enclosed by curly braces.
 Does not have any head arguments.
 .Pp


@@ -1093,16 +1108,18 @@ Examples:
 .Ed
 .Pp
 See also
 .Ed
 .Pp
 See also

-.Sx \&Brq .
-.Ss \&Brq
+.Ic \&Brq .
+.Tg Brq
+.It Ic \&Brq Ar line

 Encloses its arguments in curly braces.
 .Pp
 Examples:
 .Dl \&.Brq 1 , ... , \&Va n
 .Pp
 See also
 Encloses its arguments in curly braces.
 .Pp
 Examples:
 .Dl \&.Brq 1 , ... , \&Va n
 .Pp
 See also

-.Sx \&Bro .
-.Ss \&Bsx
+.Ic \&Bro .
+.Tg Bsx
+.It Ic \&Bsx Op Ar version

 Format the
 .Bsx
 version provided as an argument, or a default value if
 Format the
 .Bsx
 version provided as an argument, or a default value if


@@ -1113,18 +1130,19 @@ Examples:
 .Dl \&.Bsx
 .Pp
 See also
 .Dl \&.Bsx
 .Pp
 See also

-.Sx \&At ,
-.Sx \&Bx ,
-.Sx \&Dx ,
-.Sx \&Fx ,
-.Sx \&Nx ,
+.Ic \&At ,
+.Ic \&Bx ,
+.Ic \&Dx ,
+.Ic \&Fx ,
+.Ic \&Nx ,

 and
 and

-.Sx \&Ox .
-.Ss \&Bt
+.Ic \&Ox .
+.It Ic \&Bt

 Supported only for compatibility, do not use this in new manuals.
 Prints
 .Dq is currently in beta test.
 Supported only for compatibility, do not use this in new manuals.
 Prints
 .Dq is currently in beta test.

-.Ss \&Bx
+.Tg Bx
+.It Ic \&Bx Op Ar version Op Ar variant

 Format the
 .Bx
 version provided as an argument, or a default value if no
 Format the
 .Bx
 version provided as an argument, or a default value if no


@@ -1136,14 +1154,15 @@ Examples:
 .Dl \&.Bx
 .Pp
 See also
 .Dl \&.Bx
 .Pp
 See also

-.Sx \&At ,
-.Sx \&Bsx ,
-.Sx \&Dx ,
-.Sx \&Fx ,
-.Sx \&Nx ,
+.Ic \&At ,
+.Ic \&Bsx ,
+.Ic \&Dx ,
+.Ic \&Fx ,
+.Ic \&Nx ,

 and
 and

-.Sx \&Ox .
-.Ss \&Cd
+.Ic \&Ox .
+.Tg Cd
+.It Ic \&Cd Ar line

 Kernel configuration declaration.
 This denotes strings accepted by
 .Xr config 8 .
 Kernel configuration declaration.
 This denotes strings accepted by
 .Xr config 8 .


@@ -1155,23 +1174,27 @@ Examples:
 .Em Remarks :
 this macro is commonly abused by using quoted literals to retain
 whitespace and align consecutive
 .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.
 declarations.
 This practise is discouraged.

-.Ss \&Cm
+.Tg Cm
+.It Ic \&Cm Ar keyword ...

 Command modifiers.
 Command modifiers.

-Typically used for fixed strings passed as arguments, unless
-.Sx \&Fl
+Typically used for fixed strings passed as arguments to interactive
+commands, to commands in interpreted scripts, or to configuration
+file directives, unless
+.Ic \&Fl

 is more appropriate.
 is more appropriate.

-Also useful when specifying configuration options or keys.

 .Pp
 Examples:
 .Dl ".Nm mt Fl f Ar device Cm rewind"
 .Dl ".Nm ps Fl o Cm pid , Ns Cm command"
 .Dl ".Nm dd Cm if= Ns Ar file1 Cm of= Ns Ar file2"
 .Pp
 Examples:
 .Dl ".Nm mt Fl f Ar device Cm rewind"
 .Dl ".Nm ps Fl o Cm pid , Ns Cm command"
 .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
+.Dl ".Ic set Fl o Cm vi"
+.Dl ".Ic lookup Cm file bind"
+.Dl ".Ic permit Ar identity Op Cm as Ar target"
+.Tg D1
+.It Ic \&D1 Ar line

 One-line indented display.
 This is formatted by the default rules and is useful for simple indented
 statements.
 One-line indented display.
 This is formatted by the default rules and is useful for simple indented
 statements.


@@ -1181,35 +1204,34 @@ Examples:
 .Dl \&.D1 \&Fl abcdefgh
 .Pp
 See also
 .Dl \&.D1 \&Fl abcdefgh
 .Pp
 See also

-.Sx \&Bd
+.Ic \&Bd

 and
 and

-.Sx \&Dl .
-.Ss \&Db
+.Ic \&Dl .
+.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.
 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
 Close a

-.Sx \&Do
+.Ic \&Do

 block.
 Does not have any tail arguments.
 block.
 Does not have any tail arguments.

-.Ss \&Dd
-Document date for display in the page footer.
+.Tg Dd
+.It Ic \&Dd Cm $\&Mdocdate$ | Ar month day , year
+Document date for display in the page footer,
+by convention the date of the last change.

 This is the mandatory first macro of any
 .Nm
 manual.
 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
 .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
 .Ar year
 is the full four-digit year.
 .Pp


@@ -1239,14 +1261,15 @@ If no date string is given, the current date is used.
 .Pp
 Examples:
 .Dl \&.Dd $\&Mdocdate$
 .Pp
 Examples:
 .Dl \&.Dd $\&Mdocdate$

-.Dl \&.Dd $\&Mdocdate: July 21 2007$
-.Dl \&.Dd July 21, 2007
+.Dl \&.Dd $\&Mdocdate: July 2 2018$
+.Dl \&.Dd July 2, 2018

 .Pp
 See also
 .Pp
 See also

-.Sx \&Dt
+.Ic \&Dt

 and
 and

-.Sx \&Os .
-.Ss \&Dl
+.Ic \&Os .
+.Tg Dl
+.It Ic \&Dl Ar line

 One-line indented display.
 This is formatted as literal text and is useful for commands and
 invocations.
 One-line indented display.
 This is formatted as literal text and is useful for commands and
 invocations.


@@ -1256,10 +1279,11 @@ Examples:
 .Dl \&.Dl % mandoc mdoc.7 \e(ba less
 .Pp
 See also
 .Dl \&.Dl % mandoc mdoc.7 \e(ba less
 .Pp
 See also

-.Sx \&Bd
+.Ic \&Ql ,
+.Ic \&Bd Fl literal ,

 and
 and

-.Sx \&D1 .
-.Ss \&Do
+.Ic \&D1 .
+.It Ic \&Do Ar block

 Begin a block enclosed by double quotes.
 Does not have any head arguments.
 .Pp
 Begin a block enclosed by double quotes.
 Does not have any head arguments.
 .Pp


@@ -1272,8 +1296,9 @@ April is the cruellest month
 .Ed
 .Pp
 See also
 .Ed
 .Pp
 See also

-.Sx \&Dq .
-.Ss \&Dq
+.Ic \&Dq .
+.Tg Dq
+.It Ic \&Dq Ar line

 Encloses its arguments in
 .Dq typographic
 double-quotes.
 Encloses its arguments in
 .Dq typographic
 double-quotes.


@@ -1285,22 +1310,16 @@ Examples:
 .Ed
 .Pp
 See also
 .Ed
 .Pp
 See also

-.Sx \&Qq ,
-.Sx \&Sq ,
+.Ic \&Qq ,
+.Ic \&Sq ,

 and
 and

-.Sx \&Do .
-.Ss \&Dt
+.Ic \&Do .
+.Tg 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.
 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
 .Pp
 Its arguments are as follows:
 .Bl -tag -width section -offset 2n


@@ -1352,10 +1371,11 @@ Examples:
 .Dl \&.Dt FOO 9 i386
 .Pp
 See also
 .Dl \&.Dt FOO 9 i386
 .Pp
 See also

-.Sx \&Dd
+.Ic \&Dd

 and
 and

-.Sx \&Os .
-.Ss \&Dv
+.Ic \&Os .
+.Tg Dv
+.It Ic \&Dv Ar identifier ...

 Defined variables such as preprocessor constants, constant symbols,
 enumeration values, and so on.
 .Pp
 Defined variables such as preprocessor constants, constant symbols,
 enumeration values, and so on.
 .Pp


@@ -1365,16 +1385,17 @@ Examples:
 .Dl \&.Dv STDOUT_FILENO
 .Pp
 See also
 .Dl \&.Dv STDOUT_FILENO
 .Pp
 See also

-.Sx \&Er
+.Ic \&Er

 and
 and

-.Sx \&Ev
+.Ic \&Ev

 for special-purpose constants,
 for special-purpose constants,

-.Sx \&Va
+.Ic \&Va

 for variable symbols, and
 for variable symbols, and

-.Sx \&Fd
+.Ic \&Fd

 for listing preprocessor variable definitions in the
 .Em SYNOPSIS .
 for listing preprocessor variable definitions in the
 .Em SYNOPSIS .

-.Ss \&Dx
+.Tg Dx
+.It Ic \&Dx Op Ar version

 Format the
 .Dx
 version provided as an argument, or a default
 Format the
 .Dx
 version provided as an argument, or a default


@@ -1385,55 +1406,50 @@ Examples:
 .Dl \&.Dx
 .Pp
 See also
 .Dl \&.Dx
 .Pp
 See also

-.Sx \&At ,
-.Sx \&Bsx ,
-.Sx \&Bx ,
-.Sx \&Fx ,
-.Sx \&Nx ,
+.Ic \&At ,
+.Ic \&Bsx ,
+.Ic \&Bx ,
+.Ic \&Fx ,
+.Ic \&Nx ,

 and
 and

-.Sx \&Ox .
-.Ss \&Ec
+.Ic \&Ox .
+.It Ic \&Ec Op Ar closing_delimiter

 Close a scope started by
 Close a scope started by

-.Sx \&Eo .
-Its syntax is as follows:
-.Pp
-.D1 Pf \. Sx \&Ec Op Ar TERM
+.Ic \&Eo .

 .Pp
 The
 .Pp
 The

-.Ar TERM
+.Ar closing_delimiter

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

-.Sx \&Dc .
-.Ss \&Ed
+.Ic \&Dc .
+.It Ic \&Ed

 End a display context started by
 End a display context started by

-.Sx \&Bd .
-.Ss \&Ef
+.Ic \&Bd .
+.It Ic \&Ef

 End a font mode context started by
 End a font mode context started by

-.Sx \&Bf .
-.Ss \&Ek
+.Ic \&Bf .
+.It Ic \&Ek

 End a keep context started by
 End a keep context started by

-.Sx \&Bk .
-.Ss \&El
+.Ic \&Bk .
+.It Ic \&El

 End a list context started by
 End a list context started by

-.Sx \&Bl .
-.Pp
+.Ic \&Bl .

 See also
 See also

-.Sx \&Bl
-and
-.Sx \&It .
-.Ss \&Em
+.Ic \&It .
+.Tg Em
+.It Ic \&Em Ar word ...

 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
 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,
 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
 and

-.Sx \&Ar
+.Ic \&Ar

 are preferred, respectively.
 .Pp
 Examples:
 are preferred, respectively.
 .Pp
 Examples:


@@ -1447,32 +1463,29 @@ to save the pattern space for subsequent retrieval.
 .Ed
 .Pp
 See also
 .Ed
 .Pp
 See also

-.Sx \&Bf ,
-.Sx \&Li ,
-.Sx \&No ,
+.Ic \&No ,
+.Ic \&Ql ,

 and
 and

-.Sx \&Sy .
-.Ss \&En
+.Ic \&Sy .
+.It Ic \&En Ar word ...

 This macro is obsolete.
 Use
 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
 or any of the other enclosure macros.
 .Pp
 It encloses its argument in the delimiters specified by the last

-.Sx \&Es
+.Ic \&Es

 macro.
 macro.

-.Ss \&Eo
+.Tg Eo
+.It Ic \&Eo Op Ar opening_delimiter

 An arbitrary enclosure.
 An arbitrary enclosure.

-Its syntax is as follows:
-.Pp
-.D1 Pf \. Sx \&Eo Op Ar TERM
-.Pp

 The
 The

-.Ar TERM
+.Ar opening_delimiter

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

-.Sx \&Do .
-.Ss \&Er
+.Ic \&Do .
+.Tg Er
+.It Ic \&Er Ar identifier ...

 Error constants for definitions of the
 .Va errno
 libc global variable.
 Error constants for definitions of the
 .Va errno
 libc global variable.


@@ -1483,18 +1496,19 @@ Examples:
 .Dl \&.Er ENOENT
 .Pp
 See also
 .Dl \&.Er ENOENT
 .Pp
 See also

-.Sx \&Dv
+.Ic \&Dv

 for general constants.
 for general constants.

-.Ss \&Es
+.It Ic \&Es Ar opening_delimiter closing_delimiter

 This macro is obsolete.
 Use
 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
 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.
 macros.

-.Ss \&Ev
+.Tg Ev
+.It Ic \&Ev Ar identifier ...

 Environmental variables such as those specified in
 .Xr environ 7 .
 .Pp
 Environmental variables such as those specified in
 .Xr environ 7 .
 .Pp


@@ -1503,38 +1517,28 @@ Examples:
 .Dl \&.Ev PATH
 .Pp
 See also
 .Dl \&.Ev PATH
 .Pp
 See also

-.Sx \&Dv
+.Ic \&Dv

 for general constants.
 for general constants.

-.Ss \&Ex
+.Tg 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.
 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
 If
 .Ar utility
 is not specified, the document's name set by
 .Pp
 If
 .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
 is used.
 Multiple
 .Ar utility
 arguments are treated as separate utilities.
 .Pp
 See also

-.Sx \&Rv .
-.Ss \&Fa
+.Ic \&Rv .
+.Tg Fa
+.It Ic \&Fa Ar argument ...

 Function argument or parameter.
 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),
 Each argument may be a name and a type (recommended for the
 .Em SYNOPSIS
 section), a name alone (for function invocations),


@@ -1542,22 +1546,22 @@ 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
 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
 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
 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
 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:
 the last argument will also have a trailing comma.
 .Pp
 Examples:


@@ -1566,23 +1570,17 @@ Examples:
 .Dl \&.Fa \(dqchar *\(dq size_t
 .Pp
 See also
 .Dl \&.Fa \(dqchar *\(dq size_t
 .Pp
 See also

-.Sx \&Fo .
-.Ss \&Fc
+.Ic \&Fo .
+.It Ic \&Fc

 End a function context started by
 End a function context started by

-.Sx \&Fo .
-.Ss \&Fd
+.Ic \&Fo .
+.Tg 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
 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 .
-.Pp
-Its syntax is as follows:
-.Bd -ragged -offset indent
-.Pf \. Sx \&Fd
-.Li # Ns Ar directive
-.Op Ar argument ...
-.Ed
+.Ic \&In .

 .Pp
 Examples:
 .Dl \&.Fd #define sa_handler __sigaction_u.__sa_handler
 .Pp
 Examples:
 .Dl \&.Fd #define sa_handler __sigaction_u.__sa_handler


@@ -1594,37 +1592,38 @@ Examples:
 .Pp
 See also
 .Sx MANUAL STRUCTURE ,
 .Pp
 See also
 .Sx MANUAL STRUCTURE ,

-.Sx \&In ,
+.Ic \&In ,

 and
 and

-.Sx \&Dv .
-.Ss \&Fl
+.Ic \&Dv .
+.Tg Fl
+.It Ic \&Fl Op Ar word ...

 Command-line flag or option.
 Used when listing arguments to command-line utilities.
 Command-line flag or option.
 Used when listing arguments to command-line utilities.

-Prints a fixed-width hyphen
-.Sq \-
-directly followed by each argument.
-If no arguments are provided, a hyphen is printed followed by a space.
-If the argument is a macro, a hyphen is prefixed to the subsequent macro
-output.
+For each argument, prints an ASCII hyphen-minus character
+.Sq \- ,
+immediately followed by the argument.
+If no arguments are provided, a hyphen-minus is printed followed by a space.
+If the argument is a macro, a hyphen-minus is prefixed
+to the subsequent macro output.

 .Pp
 Examples:
 .Pp
 Examples:

-.Dl ".Fl R Op Fl H | L | P"
-.Dl ".Op Fl 1AaCcdFfgHhikLlmnopqRrSsTtux"
-.Dl ".Fl type Cm d Fl name Pa CVS"
-.Dl ".Fl Ar signal_number"
-.Dl ".Fl o Fl"
+.Dl ".Nm du Op Fl H | L | P"
+.Dl ".Nm ls Op Fl 1AaCcdFfgHhikLlmnopqRrSsTtux"
+.Dl ".Nm route Cm add Fl inet Ar destination gateway"
+.Dl ".Nm locate.updatedb Op Fl \e-fcodes Ns = Ns Ar dbfile"
+.Dl ".Nm aucat Fl o Fl"
+.Dl ".Nm kill Fl Ar signal_number"
+.Pp
+For GNU-sytle long options, escaping the additional hyphen-minus is not
+strictly required, but may be safer with future versions of GNU troff; see
+.Xr mandoc_char 7
+for details.

 .Pp
 See also
 .Pp
 See also

-.Sx \&Cm .
-.Ss \&Fn
+.Ic \&Cm .
+.Tg Fn
+.It Ic \&Fn Ar funcname Op Ar argument ...

 A function name.
 A function name.

-Its syntax is as follows:
-.Bd -ragged -offset indent
-.Pf \. Ns Sx \&Fn
-.Op Ar functype
-.Ar funcname
-.Op Oo Ar argtype Oc Ar argname
-.Ed

 .Pp
 Function arguments are surrounded in parenthesis and
 are delimited by commas.
 .Pp
 Function arguments are surrounded in parenthesis and
 are delimited by commas.


@@ -1638,62 +1637,57 @@ Examples:
 .Dl \&.Fn \(dqint funcname\(dq \(dqint arg0\(dq \(dqint arg1\(dq
 .Dl \&.Fn funcname \(dqint arg0\(dq
 .Dl \&.Fn funcname arg0
 .Dl \&.Fn \(dqint funcname\(dq \(dqint arg0\(dq \(dqint arg1\(dq
 .Dl \&.Fn funcname \(dqint arg0\(dq
 .Dl \&.Fn funcname arg0

-.Pp
-.Bd -literal -offset indent -compact
+.Bd -literal -offset indent

 \&.Ft functype
 \&.Fn funcname
 .Ed
 .Pp
 When referring to a function documented in another manual page, use
 \&.Ft functype
 \&.Fn funcname
 .Ed
 .Pp
 When referring to a function documented in another manual page, use

-.Sx \&Xr
+.Ic \&Xr

 instead.
 See also
 .Sx MANUAL STRUCTURE ,
 instead.
 See also
 .Sx MANUAL STRUCTURE ,

-.Sx \&Fo ,
+.Ic \&Fo ,

 and
 and

-.Sx \&Ft .
-.Ss \&Fo
+.Ic \&Ft .
+.Tg Fo
+.It Ic \&Fo Ar funcname

 Begin a function block.
 This is a multi-line version of
 Begin a function block.
 This is a multi-line version of

-.Sx \&Fn .
-Its syntax is as follows:
-.Pp
-.D1 Pf \. Sx \&Fo Ar funcname
+.Ic \&Fn .

 .Pp
 Invocations usually occur in the following context:
 .Bd -ragged -offset indent
 .Pp
 Invocations usually occur in the following context:
 .Bd -ragged -offset indent

-.Pf \. Sx \&Ft Ar functype
+.Pf \. Ic \&Ft Ar functype

 .br
 .br

-.Pf \. Sx \&Fo Ar funcname
+.Pf \. Ic \&Fo Ar funcname

 .br
 .br

-.Pf \. Sx \&Fa Qq Ar argtype Ar argname
+.Pf \. Ic \&Fa Qq Ar argtype Ar argname

 .br
 \&.\.\.
 .br
 .br
 \&.\.\.
 .br

-.Pf \. Sx \&Fc
+.Pf \. Ic \&Fc

 .Ed
 .Pp
 A
 .Ed
 .Pp
 A

-.Sx \&Fo
+.Ic \&Fo

 scope is closed by
 scope is closed by

-.Sx \&Fc .
+.Ic \&Fc .

 .Pp
 See also
 .Sx MANUAL STRUCTURE ,
 .Pp
 See also
 .Sx MANUAL STRUCTURE ,

-.Sx \&Fa ,
-.Sx \&Fc ,
+.Ic \&Fa ,
+.Ic \&Fc ,

 and
 and

-.Sx \&Ft .
-.Ss \&Fr
+.Ic \&Ft .
+.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.
 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
+.Tg Ft
+.It Ic \&Ft Ar functype

 A function type.
 A function type.

-Its syntax is as follows:
-.Pp
-.D1 Pf \. Sx \&Ft Ar functype

 .Pp
 In the
 .Em SYNOPSIS
 .Pp
 In the
 .Em SYNOPSIS


@@ -1708,10 +1702,11 @@ Examples:
 .Pp
 See also
 .Sx MANUAL STRUCTURE ,
 .Pp
 See also
 .Sx MANUAL STRUCTURE ,

-.Sx \&Fn ,
+.Ic \&Fn ,

 and
 and

-.Sx \&Fo .
-.Ss \&Fx
+.Ic \&Fo .
+.Tg Fx
+.It Ic \&Fx Op Ar version

 Format the
 .Fx
 version provided as an argument, or a default value
 Format the
 .Fx
 version provided as an argument, or a default value


@@ -1722,26 +1717,23 @@ Examples:
 .Dl \&.Fx
 .Pp
 See also
 .Dl \&.Fx
 .Pp
 See also

-.Sx \&At ,
-.Sx \&Bsx ,
-.Sx \&Bx ,
-.Sx \&Dx ,
-.Sx \&Nx ,
+.Ic \&At ,
+.Ic \&Bsx ,
+.Ic \&Bx ,
+.Ic \&Dx ,
+.Ic \&Nx ,

 and
 and

-.Sx \&Ox .
-.Ss \&Hf
+.Ic \&Ox .
+.It Ic \&Hf Ar filename

 This macro is not implemented in
 .Xr mandoc 1 .
 This macro is not implemented in
 .Xr mandoc 1 .

-.Pp

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

-The syntax was:
-.Pp
-.Dl Pf . Sx \&Hf Ar filename
-.Ss \&Ic
-Designate an internal or interactive command.
-This is similar to
-.Sx \&Cm
-but used for instructions rather than values.
+.Tg Ic
+.It Ic \&Ic Ar keyword ...
+Internal or interactive command, or configuration instruction
+in a configuration file.
+See also
+.Ic \&Cm .

 .Pp
 Examples:
 .Dl \&.Ic :wq
 .Pp
 Examples:
 .Dl \&.Ic :wq


@@ -1749,31 +1741,35 @@ Examples:
 .Dl \&.Ic alias
 .Pp
 Note that using
 .Dl \&.Ic alias
 .Pp
 Note that using

-.Sx \&Bd Fl literal
+.Ic \&Ql ,
+.Ic \&Dl ,

 or
 or

-.Sx \&D1
-is preferred for displaying code; the
-.Sx \&Ic
-macro is used when referring to specific instructions.
-.Ss \&In
-An
-.Dq include
-file.
+.Ic \&Bd Fl literal
+is preferred for displaying code samples; the
+.Ic \&Ic
+macro is used when referring to an individual command name.
+.Tg 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

 When invoked as the first macro on an input line in the
 .Em SYNOPSIS
 section, the argument is displayed in angle brackets
 and preceded by
 When invoked as the first macro on an input line in the
 .Em SYNOPSIS
 section, the argument is displayed in angle brackets
 and preceded by

-.Dq #include ,
+.Qq #include ,

 and a blank line is inserted in front if there is a preceding
 function declaration.
 and a blank line is inserted in front if there is a preceding
 function declaration.

-This is most often used in section 2, 3, and 9 manual pages.
+In other sections, it only encloses its argument in angle brackets
+and causes no line break.

 .Pp
 Examples:
 .Dl \&.In sys/types.h
 .Pp
 See also
 .Sx MANUAL STRUCTURE .
 .Pp
 Examples:
 .Dl \&.In sys/types.h
 .Pp
 See also
 .Sx MANUAL STRUCTURE .

-.Ss \&It
+.Tg It
+.It Ic \&It Op Ar head

 A list item.
 The syntax of this macro depends on the list type.
 .Pp
 A list item.
 The syntax of this macro depends on the list type.
 .Pp


@@ -1786,7 +1782,7 @@ and
 .Fl diag
 have the following syntax:
 .Pp
 .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 ,
 .Pp
 Lists of type
 .Fl bullet ,


@@ -1797,20 +1793,20 @@ and
 .Fl item
 have the following syntax:
 .Pp
 .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
 .Pp
 with subsequent lines interpreted within the scope of the

-.Sx \&It
+.Ic \&It

 until either a closing
 until either a closing

-.Sx \&El
+.Ic \&El

 or another
 or another

-.Sx \&It .
+.Ic \&It .

 .Pp
 The
 .Fl tag
 list has the following syntax:
 .Pp
 .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
 .Pp
 Subsequent lines are interpreted as with
 .Fl bullet


@@ -1823,46 +1819,56 @@ The
 list is the most complicated.
 Its syntax is as follows:
 .Pp
 list is the most complicated.
 Its syntax is as follows:
 .Pp

-.D1 Pf \. Sx \&It Ar cell Op <TAB> Ar cell ...
-.D1 Pf \. Sx \&It Ar cell Op Sx \&Ta Ar cell ...
+.D1 Pf \. Ic \&It Ar cell Op Ic \&Ta 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.
 .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 tabs or by the special
-.Sx \&Ta
-block macro.
+Cells within the line are delimited by the special
+.Ic \&Ta
+block macro or by literal tab characters.
+.Pp
+Using literal tabs is strongly discouraged because they are very
+hard to use correctly and
+.Nm
+code using them is very hard to read.
+In particular, a blank character is syntactically significant
+before and after the literal tab character.
+If a word precedes or follows the tab without an intervening blank,
+that word is never interpreted as a macro call, but always output
+literally.
+.Pp

 The tab cell delimiter may only be used within the
 The tab cell delimiter may only be used within the

-.Sx \&It
+.Ic \&It

 line itself; on following lines, only the
 line itself; on following lines, only the

-.Sx \&Ta
-macro can be used to delimit cells, and
-.Sx \&Ta
-is only recognised as a macro when called by other macros,
-not as the first macro on a line.
+.Ic \&Ta
+macro can be used to delimit cells, and portability requires that
+.Ic \&Ta
+is called by other macros: some parsers do not recognize it when
+it appears as the first macro on a line.

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

-.Sx \&It
+.Ic \&It

 line.
 For example,
 .Pp
 line.
 For example,
 .Pp

-.Dl .It \(dqcol1 ; <TAB> col2 ;\(dq \&;
+.Dl .It \(dqcol1 ,\& <TAB> col2 ,\(dq \&;

 .Pp
 .Pp

-will preserve the semicolon whitespace except for the last.
+will preserve the whitespace before both commas,
+but not the whitespace before the semicolon.

 .Pp
 See also
 .Pp
 See also

-.Sx \&Bl .
-.Ss \&Lb
+.Ic \&Bl .
+.Tg Lb
+.It Ic \&Lb Cm lib Ns Ar name

 Specify a library.
 Specify a library.

-The syntax is as follows:
-.Pp
-.D1 Pf \. Sx \&Lb Ar library

 .Pp
 The
 .Pp
 The

-.Ar library
+.Ar name

 parameter may be a system library, such as
 parameter may be a system library, such as

-.Cm libz
+.Cm z

 or
 or

-.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.
 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.


@@ -1874,73 +1880,61 @@ section as described in
 Examples:
 .Dl \&.Lb libz
 .Dl \&.Lb libmandoc
 Examples:
 .Dl \&.Lb libz
 .Dl \&.Lb libmandoc

-.Ss \&Li
-Denotes text that should be in a
-.Li literal
-font mode.
-Note that this is a presentation term and should not be used for
-stylistically decorating technical terms.
-.Pp
-On terminal output devices, this is often indistinguishable from
-normal text.
-.Pp
-See also
-.Sx \&Bf ,
-.Sx \&Em ,
-.Sx \&No ,
-and
-.Sx \&Sy .
-.Ss \&Lk
+.Tg Li
+.It Ic \&Li Ar word ...
+Request a typewriter (literal) font.
+Deprecated because on terminal output devices, this is usually
+indistinguishable from normal text.
+For literal displays, use
+.Ic \&Ql Pq in-line ,
+.Ic \&Dl Pq single line ,
+or
+.Ic \&Bd Fl literal Pq multi-line
+instead.
+.Tg Lk
+.It Ic \&Lk Ar uri Op Ar display_name

 Format a hyperlink.
 Format a hyperlink.

-Its syntax is as follows:
-.Pp
-.D1 Pf \. Sx \&Lk Ar uri Op Ar name

 .Pp
 Examples:
 .Pp
 Examples:

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

 .Pp
 See also
 .Pp
 See also

-.Sx \&Mt .
-.Ss \&Lp
-Synonym for
-.Sx \&Pp .
-.Ss \&Ms
+.Ic \&Mt .
+.It Ic \&Lp
+Deprecated synonym for
+.Ic \&Pp .
+.Tg Ms
+.It Ic \&Ms Ar name

 Display a mathematical symbol.
 Display a mathematical symbol.

-Its syntax is as follows:
-.Pp
-.D1 Pf \. Sx \&Ms Ar symbol

 .Pp
 Examples:
 .Dl \&.Ms sigma
 .Dl \&.Ms aleph
 .Pp
 Examples:
 .Dl \&.Ms sigma
 .Dl \&.Ms aleph

-.Ss \&Mt
+.Tg Mt
+.It Ic \&Mt Ar localpart Ns @ Ns Ar domain

 Format a
 .Dq mailto:
 hyperlink.
 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
 .Pp
 Examples:
 .Dl \&.Mt discuss@manpages.bsd.lv
 .Dl \&.An Kristaps Dzonsons \&Aq \&Mt kristaps@bsd.lv

-.Ss \&Nd
+.Tg Nd
+.It Ic \&Nd Ar line

 A one line description of the manual's content.
 A one line description of the manual's content.

-This may only be invoked in the
-.Em SYNOPSIS
-section subsequent the
-.Sx \&Nm
-macro.
+This is the mandatory last macro of the
+.Em NAME
+section and not appropriate for other sections.

 .Pp
 Examples:
 .Pp
 Examples:

-.Dl Pf . Sx \&Nd mdoc language reference
-.Dl Pf . Sx \&Nd format and display UNIX manuals
+.Dl Pf . Ic \&Nd mdoc language reference
+.Dl Pf . Ic \&Nd format and display UNIX manuals

 .Pp
 The
 .Pp
 The

-.Sx \&Nd
+.Ic \&Nd

 macro technically accepts child macros and terminates with a subsequent
 macro technically accepts child macros and terminates with a subsequent

-.Sx \&Sh
+.Ic \&Sh

 invocation.
 Do not assume this behaviour: some
 .Xr whatis 1
 invocation.
 Do not assume this behaviour: some
 .Xr whatis 1


@@ -1948,13 +1942,14 @@ database generators are not smart enough to parse more than the line
 arguments and will display macros verbatim.
 .Pp
 See also
 arguments and will display macros verbatim.
 .Pp
 See also

-.Sx \&Nm .
-.Ss \&Nm
+.Ic \&Nm .
+.Tg 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
 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
 macro expects a single argument, the name of the manual page.
 Usually, the first invocation happens in the
 .Em NAME


@@ -1962,7 +1957,7 @@ 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
 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
 macro uses
 .Sx Block full-implicit
 semantics when invoked as the first macro on an input line in the


@@ -1982,41 +1977,42 @@ Examples:
 In the
 .Em SYNOPSIS
 of section 2, 3 and 9 manual pages, use the
 In the
 .Em SYNOPSIS
 of section 2, 3 and 9 manual pages, use the

-.Sx \&Fn
+.Ic \&Fn

 macro rather than
 macro rather than

-.Sx \&Nm
+.Ic \&Nm

 to mark up the name of the manual page.
 to mark up the name of the manual page.

-.Ss \&No
+.Tg No
+.It Ic \&No Ar word ...

 Normal text.
 Closes the scope of any preceding in-line macro.
 When used after physical formatting macros like
 Normal text.
 Closes the scope of any preceding in-line macro.
 When used after physical formatting macros like

-.Sx \&Em
+.Ic \&Em

 or
 or

-.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.
 .Pp
 Examples:
 .Dl ".Em italic , Sy bold , No and roman"
 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.
 .Pp
 Examples:
 .Dl ".Em italic , Sy bold , No and roman"

-.Pp
-.Bd -literal -offset indent -compact
+.Bd -literal -offset indent

 \&.Sm off
 \&.Cm :C No / Ar pattern No / Ar replacement No /
 \&.Sm on
 .Ed
 .Pp
 See also
 \&.Sm off
 \&.Cm :C No / Ar pattern No / Ar replacement No /
 \&.Sm on
 .Ed
 .Pp
 See also

-.Sx \&Em ,
-.Sx \&Li ,
+.Ic \&Em ,
+.Ic \&Ql ,

 and
 and

-.Sx \&Sy .
-.Ss \&Ns
+.Ic \&Sy .
+.Tg 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
 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.
 macro.
 .Pp
 This has no effect when invoked at the start of a macro line.


@@ -2027,10 +2023,11 @@ Examples:
 .Dl ".Fl o Ns Ar output"
 .Pp
 See also
 .Dl ".Fl o Ns Ar output"
 .Pp
 See also

-.Sx \&No
+.Ic \&No

 and
 and

-.Sx \&Sm .
-.Ss \&Nx
+.Ic \&Sm .
+.Tg Nx
+.It Ic \&Nx Op Ar version

 Format the
 .Nx
 version provided as an argument, or a default value if
 Format the
 .Nx
 version provided as an argument, or a default value if


@@ -2041,20 +2038,20 @@ Examples:
 .Dl \&.Nx
 .Pp
 See also
 .Dl \&.Nx
 .Pp
 See also

-.Sx \&At ,
-.Sx \&Bsx ,
-.Sx \&Bx ,
-.Sx \&Dx ,
-.Sx \&Fx ,
+.Ic \&At ,
+.Ic \&Bsx ,
+.Ic \&Bx ,
+.Ic \&Dx ,
+.Ic \&Fx ,

 and
 and

-.Sx \&Ox .
-.Ss \&Oc
+.Ic \&Ox .
+.It Ic \&Oc

 Close multi-line
 Close multi-line

-.Sx \&Oo
+.Ic \&Oo

 context.
 context.

-.Ss \&Oo
+.It Ic \&Oo Ar block

 Multi-line version of
 Multi-line version of

-.Sx \&Op .
+.Ic \&Op .

 .Pp
 Examples:
 .Bd -literal -offset indent -compact
 .Pp
 Examples:
 .Bd -literal -offset indent -compact


@@ -2062,7 +2059,8 @@ Examples:
 \&.Op Fl flag Ns Ar value
 \&.Oc
 .Ed
 \&.Op Fl flag Ns Ar value
 \&.Oc
 .Ed

-.Ss \&Op
+.Tg 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
 Optional part of a command line.
 Prints the argument(s) in brackets.
 This is most often used in the


@@ -2074,16 +2072,14 @@ Examples:
 .Dl \&.Op \&Ar a | b
 .Pp
 See also
 .Dl \&.Op \&Ar a | b
 .Pp
 See also

-.Sx \&Oo .
-.Ss \&Os
+.Ic \&Oo .
+.Tg 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.
 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
 .Pp
 The optional
 .Ar system


@@ -2092,7 +2088,7 @@ It is suggested to leave it unspecified, in which case
 .Xr mandoc 1
 uses its
 .Fl Ios
 .Xr mandoc 1
 uses its
 .Fl Ios

-argument, or, if that isn't specified either,
+argument or, if that isn't specified either,

 .Fa sysname
 and
 .Fa release
 .Fa sysname
 and
 .Fa release


@@ -2105,13 +2101,13 @@ Examples:
 .Dl \&.Os BSD 4.3
 .Pp
 See also
 .Dl \&.Os BSD 4.3
 .Pp
 See also

-.Sx \&Dd
+.Ic \&Dd

 and
 and

-.Sx \&Dt .
-.Ss \&Ot
+.Ic \&Dt .
+.It Ic \&Ot Ar functype

 This macro is obsolete.
 Use
 This macro is obsolete.
 Use

-.Sx \&Ft
+.Ic \&Ft

 instead; with
 .Xr mandoc 1 ,
 both have the same effect.
 instead; with
 .Xr mandoc 1 ,
 both have the same effect.


@@ -2120,7 +2116,8 @@ Historical
 .Nm
 packages described it as
 .Dq "old function type (FORTRAN)" .
 .Nm
 packages described it as
 .Dq "old function type (FORTRAN)" .

-.Ss \&Ox
+.Tg Ox
+.It Ic \&Ox Op Ar version

 Format the
 .Ox
 version provided as an argument, or a default value
 Format the
 .Ox
 version provided as an argument, or a default value


@@ -2131,14 +2128,15 @@ Examples:
 .Dl \&.Ox
 .Pp
 See also
 .Dl \&.Ox
 .Pp
 See also

-.Sx \&At ,
-.Sx \&Bsx ,
-.Sx \&Bx ,
-.Sx \&Dx ,
-.Sx \&Fx ,
+.Ic \&At ,
+.Ic \&Bsx ,
+.Ic \&Bx ,
+.Ic \&Dx ,
+.Ic \&Fx ,

 and
 and

-.Sx \&Nx .
-.Ss \&Pa
+.Ic \&Nx .
+.Tg 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
 An absolute or relative file system path, or a file or directory name.
 If an argument is not provided, the character
 .Sq \(ti


@@ -2149,107 +2147,114 @@ Examples:
 .Dl \&.Pa /usr/share/man/man7/mdoc.7
 .Pp
 See also
 .Dl \&.Pa /usr/share/man/man7/mdoc.7
 .Pp
 See also

-.Sx \&Lk .
-.Ss \&Pc
+.Ic \&Lk .
+.It Ic \&Pc

 Close parenthesised context opened by
 Close parenthesised context opened by

-.Sx \&Po .
-.Ss \&Pf
-Removes the space between its argument
-.Pq Dq prefix
-and the following macro.
-Its syntax is as follows:
+.Ic \&Po .
+.Tg Pf
+.It Ic \&Pf Ar prefix macro Op Ar argument ...
+Removes the space between its argument and the following macro.
+It is equivalent to:

 .Pp
 .Pp

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

 .Pp
 .Pp

-This is equivalent to:
-.Pp
-.D1 .No Ar prefix No \&Ns Ar macro arguments ...
+The
+.Ar prefix
+argument is not parsed for macro names or delimiters,
+but used verbatim as if it were escaped.

 .Pp
 Examples:
 .Dl ".Pf $ Ar variable_name"
 .Pp
 Examples:
 .Dl ".Pf $ Ar variable_name"

+.Dl ".Pf . Ar macro_name"

 .Dl ".Pf 0x Ar hex_digits"
 .Pp
 See also
 .Dl ".Pf 0x Ar hex_digits"
 .Pp
 See also

-.Sx \&Ns
+.Ic \&Ns

 and
 and

-.Sx \&Sm .
-.Ss \&Po
+.Ic \&Sm .
+.It Ic \&Po Ar block

 Multi-line version of
 Multi-line version of

-.Sx \&Pq .
-.Ss \&Pp
+.Ic \&Pq .
+.Tg 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
 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

 or
 or

-.Sx \&Ss
+.Ic \&Ss

 macros or before displays
 macros or before displays

-.Pq Sx \&Bd
+.Pq Ic \&Bd Ar line

 or lists
 or lists

-.Pq Sx \&Bl
+.Pq Ic \&Bl

 unless the
 .Fl compact
 flag is given.
 unless the
 .Fl compact
 flag is given.

-.Ss \&Pq
+.Tg Pq
+.It Ic \&Pq Ar line

 Parenthesised enclosure.
 .Pp
 See also
 Parenthesised enclosure.
 .Pp
 See also

-.Sx \&Po .
-.Ss \&Qc
+.Ic \&Po .
+.It Ic \&Qc

 Close quoted context opened by
 Close quoted context opened by

-.Sx \&Qo .
-.Ss \&Ql
-Request a literal font and enclose in single quotes.
-For arguments of three or more characters, formatters other than
-.Xr mandoc 1
-usually omit the quotes on non-terminal output devices.
+.Ic \&Qo .
+.Tg Ql
+.It Ic \&Ql Ar line
+In-line literal display.
+This can be used for complete command invocations and for multi-word
+code examples when an indented display is not desired.
+.Pp

 See also
 See also

-.Sx \&Li
+.Ic \&Dl

 and
 and

-.Sx \&Sq .
-.Ss \&Qo
+.Ic \&Bd
+.Fl literal .
+.It Ic \&Qo Ar block

 Multi-line version of
 Multi-line version of

-.Sx \&Qq .
-.Ss \&Qq
+.Ic \&Qq .
+.Tg Qq
+.It Ic \&Qq Ar line

 Encloses its arguments in
 .Qq typewriter
 double-quotes.
 Consider using
 Encloses its arguments in
 .Qq typewriter
 double-quotes.
 Consider using

-.Sx \&Dq .
+.Ic \&Dq .

 .Pp
 See also
 .Pp
 See also

-.Sx \&Dq ,
-.Sx \&Sq ,
+.Ic \&Dq ,
+.Ic \&Sq ,

 and
 and

-.Sx \&Qo .
-.Ss \&Re
+.Ic \&Qo .
+.It Ic \&Re

 Close an
 Close an

-.Sx \&Rs
+.Ic \&Rs

 block.
 Does not have any tail arguments.
 block.
 Does not have any tail arguments.

-.Ss \&Rs
+.Tg Rs
+.It Ic \&Rs

 Begin a bibliographic
 .Pq Dq reference
 block.
 Does not have any head arguments.
 The block macro may only contain
 Begin a bibliographic
 .Pq Dq reference
 block.
 Does not have any head arguments.
 The block macro may only contain

-.Sx \&%A ,
-.Sx \&%B ,
-.Sx \&%C ,
-.Sx \&%D ,
-.Sx \&%I ,
-.Sx \&%J ,
-.Sx \&%N ,
-.Sx \&%O ,
-.Sx \&%P ,
-.Sx \&%Q ,
-.Sx \&%R ,
-.Sx \&%T ,
-.Sx \&%U ,
+.Ic \&%A ,
+.Ic \&%B ,
+.Ic \&%C ,
+.Ic \&%D ,
+.Ic \&%I ,
+.Ic \&%J ,
+.Ic \&%N ,
+.Ic \&%O ,
+.Ic \&%P ,
+.Ic \&%Q ,
+.Ic \&%R ,
+.Ic \&%T ,
+.Ic \&%U ,

 and
 and

-.Sx \&%V
+.Ic \&%V

 child macros (at least one must be specified).
 .Pp
 Examples:
 child macros (at least one must be specified).
 .Pp
 Examples:


@@ -2259,40 +2264,39 @@ Examples:
 \&.%A J. D. Ullman
 \&.%B Introduction to Automata Theory, Languages, and Computation
 \&.%I Addison-Wesley
 \&.%A J. D. Ullman
 \&.%B Introduction to Automata Theory, Languages, and Computation
 \&.%I Addison-Wesley

-\&.%C Reading, Massachusettes
+\&.%C Reading, Massachusetts

 \&.%D 1979
 \&.Re
 .Ed
 .Pp
 If an
 \&.%D 1979
 \&.Re
 .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.
 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
+.Tg 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.
 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
 If
 .Ar function
 is not specified, the document's name set by
 .Pp
 If
 .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
 is used.
 Multiple
 .Ar function
 arguments are treated as separate functions.
 .Pp
 See also

-.Sx \&Ex .
-.Ss \&Sc
+.Ic \&Ex .
+.It Ic \&Sc

 Close single-quoted context opened by
 Close single-quoted context opened by

-.Sx \&So .
-.Ss \&Sh
+.Ic \&So .
+.Tg Sh
+.It Ic \&Sh Ar TITLE LINE

 Begin a new section.
 For a list of conventional manual sections, see
 .Sx MANUAL STRUCTURE .
 Begin a new section.
 For a list of conventional manual sections, see
 .Sx MANUAL STRUCTURE .


@@ -2300,21 +2304,19 @@ These sections should be used unless it's absolutely necessary that
 custom sections be used.
 .Pp
 Section names should be unique so that they may be keyed by
 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
 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
 .Pp
 See also

-.Sx \&Pp ,
-.Sx \&Ss ,
+.Ic \&Pp ,
+.Ic \&Ss ,

 and
 and

-.Sx \&Sx .
-.Ss \&Sm
+.Ic \&Sx .
+.Tg Sm
+.It Ic \&Sm Op Cm on | off

 Switches the spacing mode for output generated from macros.
 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 .
 .Pp
 By default, spacing is
 .Cm on .


@@ -2325,26 +2327,28 @@ output generated from adjacent macros, but text lines
 still get normal spacing between words and sentences.
 .Pp
 When called without an argument, the
 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.
 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
 Multi-line version of

-.Sx \&Sq .
-.Ss \&Sq
+.Ic \&Sq .
+.Tg Sq
+.It Ic \&Sq Ar line

 Encloses its arguments in
 .Sq typewriter
 single-quotes.
 .Pp
 See also
 Encloses its arguments in
 .Sq typewriter
 single-quotes.
 .Pp
 See also

-.Sx \&Dq ,
-.Sx \&Qq ,
+.Ic \&Dq ,
+.Ic \&Qq ,

 and
 and

-.Sx \&So .
-.Ss \&Ss
+.Ic \&So .
+.Tg Ss
+.It Ic \&Ss Ar Title line

 Begin a new subsection.
 Unlike with
 Begin a new subsection.
 Unlike with

-.Sx \&Sh ,
+.Ic \&Sh ,

 there is no convention for the naming of subsections.
 Except
 .Em DESCRIPTION ,
 there is no convention for the naming of subsections.
 Except
 .Em DESCRIPTION ,


@@ -2353,17 +2357,18 @@ the conventional sections described in
 rarely have subsections.
 .Pp
 Sub-section names should be unique so that they may be keyed by
 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
 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
 .Pp
 See also

-.Sx \&Pp ,
-.Sx \&Sh ,
+.Ic \&Pp ,
+.Ic \&Sh ,

 and
 and

-.Sx \&Sx .
-.Ss \&St
+.Ic \&Sx .
+.Tg 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,
 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,


@@ -2550,11 +2555,6 @@ The second and last Technical Corrigendum.
 .br
 This standard is also called
 X/Open Portability Guide version 7.
 .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
 .El
 .It Other standards
 .Pp


@@ -2578,7 +2578,8 @@ Ethernet local area networks.
 .St -ieee1275-94
 .El
 .El
 .St -ieee1275-94
 .El
 .El

-.Ss \&Sx
+.Tg 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.
 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.


@@ -2587,15 +2588,16 @@ Examples:
 .Dl \&.Sx MANUAL STRUCTURE
 .Pp
 See also
 .Dl \&.Sx MANUAL STRUCTURE
 .Pp
 See also

-.Sx \&Sh
+.Ic \&Sh

 and
 and

-.Sx \&Ss .
-.Ss \&Sy
+.Ic \&Ss .
+.Tg 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
 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
 When none of the semantic macros fit, it is also adequate for syntax
 elements that have to be given or that appear verbatim.
 .Pp


@@ -2611,31 +2613,76 @@ program.
 .Ed
 .Pp
 See also
 .Ed
 .Pp
 See also

-.Sx \&Bf ,
-.Sx \&Em ,
-.Sx \&Li ,
+.Ic \&Em ,
+.Ic \&No ,

 and
 and

-.Sx \&No .
-.Ss \&Ta
+.Ic \&Ql .
+.Tg Ta
+.It Ic \&Ta

 Table cell separator in
 Table cell separator in

-.Sx \&Bl Fl column
+.Ic \&Bl Fl column

 lists; can only be used below
 lists; can only be used below

-.Sx \&It .
-.Ss \&Tn
+.Ic \&It .
+.Tg Tg
+.It Ic \&Tg Op Ar term
+Announce that the next input line starts a definition of the
+.Ar term .
+This macro must appear alone on its own input line.
+The argument defaults to the first argument of the first macro
+on the next line.
+The argument may not contain whitespace characters, not even when it is quoted.
+This macro is a
+.Xr mandoc 1
+extension and is typically ignored by other formatters.
+.Pp
+When viewing terminal output with
+.Xr less 1 ,
+the interactive
+.Ic :t
+command can be used to go to the definition of the
+.Ar term
+as described for the
+.Ev MANPAGER
+variable in
+.Xr man 1 ;
+when producing HTML output, a fragment identifier
+.Pq Ic id No attribute
+is generated, to be used for deep linking to this place of the document.
+.Pp
+In most cases, adding a
+.Ic \&Tg
+macro would be redundant because
+.Xr mandoc 1
+is able to automatically tag most definitions.
+This macro is intended for cases where automatic tagging of a
+.Ar term
+is unsatisfactory, for example if a definition is not tagged
+automatically (false negative) or if places are tagged that do
+not define the
+.Ar term
+(false positives).
+When there is at least one
+.Ic \&Tg
+macro for a
+.Ar term ,
+no other places are automatically marked as definitions of that
+.Ar term .
+.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.
 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.
 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 .
 Supported only for compatibility, do not use this in new manuals.
 Prints out
 .Dq Ux .

-.Ss \&Va
+.Tg Va
+.It Ic \&Va Oo Ar type Oc Ar identifier ...

 A variable name.
 .Pp
 Examples:
 A variable name.
 .Pp
 Examples:


@@ -2643,13 +2690,14 @@ Examples:
 .Dl \&.Va const char *bar ;
 .Pp
 For function arguments and parameters, use
 .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
 instead.
 For declarations of global variables in the
 .Em SYNOPSIS
 section, use

-.Sx \&Vt .
-.Ss \&Vt
+.Ic \&Vt .
+.Tg Vt
+.It Ic \&Vt Ar type Op Ar identifier

 A variable type.
 .Pp
 This is also used for indicating global variables in the
 A variable type.
 .Pp
 This is also used for indicating global variables in the


@@ -2671,68 +2719,43 @@ Examples:
 .Dl \&.Vt extern const char * const sys_signame[] \&;
 .Pp
 For parameters in function prototypes, use
 .Dl \&.Vt extern const char * const sys_signame[] \&;
 .Pp
 For parameters in function prototypes, use

-.Sx \&Fa
+.Ic \&Fa

 instead, for function return types
 instead, for function return types

-.Sx \&Ft ,
+.Ic \&Ft ,

 and for variable names outside the
 .Em SYNOPSIS
 section
 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 .
 even when including a type with the name.
 See also
 .Sx MANUAL STRUCTURE .

-.Ss \&Xc
+.It Ic \&Xc

 Close a scope opened by
 Close a scope opened by

-.Sx \&Xo .
-.Ss \&Xo
+.Ic \&Xo .
+.It Ic \&Xo Ar block

 Extend the header of an
 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 .
 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
+.Tg Xr
+.It Ic \&Xr Ar name section

 Link to another manual
 .Pq Qq cross-reference .
 Link to another manual
 .Pq Qq cross-reference .

-Its syntax is as follows:
-.Pp
-.D1 Pf \. Sx \&Xr Ar name Op section

 .Pp
 Cross reference the
 .Ar name
 and
 .Ar section
 .Pp
 Cross reference the
 .Ar name
 and
 .Ar section

-number of another man page;
-omitting the section number is rarely useful.
+number of another man page.

 .Pp
 Examples:
 .Dl \&.Xr mandoc 1
 .Dl \&.Xr mandoc 1 \&;
 .Dl \&.Xr mandoc 1 \&Ns s behaviour
 .Pp
 Examples:
 .Dl \&.Xr mandoc 1
 .Dl \&.Xr mandoc 1 \&;
 .Dl \&.Xr mandoc 1 \&Ns s behaviour

-.Ss \&br
-Emits a line-break.
-This macro should not be used; it is implemented for compatibility with
-historical manuals.
-.Pp
-Consider using
-.Sx \&Pp
-in the event of natural paragraph breaks.
-.Ss \&sp
-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.
+.El

 .Sh MACRO SYNTAX
 The syntax of a macro depends on its classification.
 In this section,
 .Sh MACRO SYNTAX
 The syntax of a macro depends on its classification.
 In this section,


@@ -2780,10 +2803,10 @@ column, if applicable, describes closure rules.
 .Ss Block full-explicit
 Multi-line scope closed by an explicit closing macro.
 All macros contains bodies; only
 .Ss Block full-explicit
 Multi-line scope closed by an explicit closing macro.
 All macros contains bodies; only

-.Sx \&Bf
+.Ic \&Bf

 and
 .Pq optionally
 and
 .Pq optionally

-.Sx \&Bl
+.Ic \&Bl

 contain a head.
 .Bd -literal -offset indent
 \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB
 contain a head.
 .Bd -literal -offset indent
 \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB


@@ -2792,20 +2815,20 @@ 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
 .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 Sx \&Bf  Ta    \&No     Ta    \&No     Ta    closed by Sx \&Ef
-.It Sx \&Bk  Ta    \&No     Ta    \&No     Ta    closed by Sx \&Ek
-.It Sx \&Bl  Ta    \&No     Ta    \&No     Ta    closed by Sx \&El
-.It Sx \&Ed  Ta    \&No     Ta    \&No     Ta    opened by Sx \&Bd
-.It Sx \&Ef  Ta    \&No     Ta    \&No     Ta    opened by Sx \&Bf
-.It Sx \&Ek  Ta    \&No     Ta    \&No     Ta    opened by Sx \&Bk
-.It Sx \&El  Ta    \&No     Ta    \&No     Ta    opened by Sx \&Bl
+.It Ic \&Bd  Ta    \&No     Ta    \&No     Ta    closed by Ic \&Ed
+.It Ic \&Bf  Ta    \&No     Ta    \&No     Ta    closed by Ic \&Ef
+.It Ic \&Bk  Ta    \&No     Ta    \&No     Ta    closed by Ic \&Ek
+.It Ic \&Bl  Ta    \&No     Ta    \&No     Ta    closed by Ic \&El
+.It Ic \&Ed  Ta    \&No     Ta    \&No     Ta    opened by Ic \&Bd
+.It Ic \&Ef  Ta    \&No     Ta    \&No     Ta    opened by Ic \&Bf
+.It Ic \&Ek  Ta    \&No     Ta    \&No     Ta    opened by Ic \&Bk
+.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
 .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 ,
 .Fl hyphen ,
 .Fl dash ,
 .Fl enum ,


@@ -2813,9 +2836,9 @@ All macros have bodies; some
 .Pc
 don't have heads; only one
 .Po
 .Pc
 don't have heads; only one
 .Po

-.Sx \&It
+.Ic \&It

 in
 in

-.Sx \&Bl Fl column
+.Ic \&Bl Fl column

 .Pc
 has multiple heads.
 .Bd -literal -offset indent
 .Pc
 has multiple heads.
 .Bd -literal -offset indent


@@ -2824,15 +2847,15 @@ 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
 .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 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 Yes  Ta closed by Sx \&Sh
-.It Sx \&Ss Ta \&No Ta Yes  Ta closed by Sx \&Sh , Sx \&Ss
+.It Ic \&It Ta \&No Ta Yes  Ta closed by Ic \&It , Ic \&El
+.It Ic \&Nd Ta \&No Ta \&No Ta closed by Ic \&Sh
+.It Ic \&Nm Ta \&No Ta Yes  Ta closed by Ic \&Nm , Ic \&Sh , Ic \&Ss
+.It Ic \&Sh Ta \&No Ta Yes  Ta closed by Ic \&Sh
+.It Ic \&Ss Ta \&No Ta Yes  Ta closed by Ic \&Sh , Ic \&Ss

 .El
 .Pp
 Note that the
 .El
 .Pp
 Note that the

-.Sx \&Nm
+.Ic \&Nm

 macro is a
 .Sx Block full-implicit
 macro only when invoked as the first macro
 macro is a
 .Sx Block full-implicit
 macro only when invoked as the first macro


@@ -2844,11 +2867,11 @@ 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
 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 ,
-.Sx \&Eo
+.Ic \&Fo ,
+.Ic \&Eo

 .Pc
 and/or tail
 .Pc
 and/or tail

-.Pq Sx \&Ec .
+.Pq Ic \&Ec .

 .Bd -literal -offset indent
 \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB
 \(lBbody...\(rB
 .Bd -literal -offset indent
 \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB
 \(lBbody...\(rB


@@ -2859,30 +2882,30 @@ 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
 .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 Sx \&Ao  Ta    Yes      Ta    Yes      Ta    closed by Sx \&Ac
-.It Sx \&Bc  Ta    Yes      Ta    Yes      Ta    closed by Sx \&Bo
-.It Sx \&Bo  Ta    Yes      Ta    Yes      Ta    opened by Sx \&Bc
-.It Sx \&Brc Ta    Yes      Ta    Yes      Ta    opened by Sx \&Bro
-.It Sx \&Bro Ta    Yes      Ta    Yes      Ta    closed by Sx \&Brc
-.It Sx \&Dc  Ta    Yes      Ta    Yes      Ta    opened by Sx \&Do
-.It Sx \&Do  Ta    Yes      Ta    Yes      Ta    closed by Sx \&Dc
-.It Sx \&Ec  Ta    Yes      Ta    Yes      Ta    opened by Sx \&Eo
-.It Sx \&Eo  Ta    Yes      Ta    Yes      Ta    closed by Sx \&Ec
-.It Sx \&Fc  Ta    Yes      Ta    Yes      Ta    opened by Sx \&Fo
-.It Sx \&Fo  Ta    \&No     Ta    \&No     Ta    closed by Sx \&Fc
-.It Sx \&Oc  Ta    Yes      Ta    Yes      Ta    closed by Sx \&Oo
-.It Sx \&Oo  Ta    Yes      Ta    Yes      Ta    opened by Sx \&Oc
-.It Sx \&Pc  Ta    Yes      Ta    Yes      Ta    closed by Sx \&Po
-.It Sx \&Po  Ta    Yes      Ta    Yes      Ta    opened by Sx \&Pc
-.It Sx \&Qc  Ta    Yes      Ta    Yes      Ta    opened by Sx \&Oo
-.It Sx \&Qo  Ta    Yes      Ta    Yes      Ta    closed by Sx \&Oc
-.It Sx \&Re  Ta    \&No     Ta    \&No     Ta    opened by Sx \&Rs
-.It Sx \&Rs  Ta    \&No     Ta    \&No     Ta    closed by Sx \&Re
-.It Sx \&Sc  Ta    Yes      Ta    Yes      Ta    opened by Sx \&So
-.It Sx \&So  Ta    Yes      Ta    Yes      Ta    closed by Sx \&Sc
-.It Sx \&Xc  Ta    Yes      Ta    Yes      Ta    opened by Sx \&Xo
-.It Sx \&Xo  Ta    Yes      Ta    Yes      Ta    closed by Sx \&Xc
+.It Ic \&Ac  Ta    Yes      Ta    Yes      Ta    opened by Ic \&Ao
+.It Ic \&Ao  Ta    Yes      Ta    Yes      Ta    closed by Ic \&Ac
+.It Ic \&Bc  Ta    Yes      Ta    Yes      Ta    closed by Ic \&Bo
+.It Ic \&Bo  Ta    Yes      Ta    Yes      Ta    opened by Ic \&Bc
+.It Ic \&Brc Ta    Yes      Ta    Yes      Ta    opened by Ic \&Bro
+.It Ic \&Bro Ta    Yes      Ta    Yes      Ta    closed by Ic \&Brc
+.It Ic \&Dc  Ta    Yes      Ta    Yes      Ta    opened by Ic \&Do
+.It Ic \&Do  Ta    Yes      Ta    Yes      Ta    closed by Ic \&Dc
+.It Ic \&Ec  Ta    Yes      Ta    Yes      Ta    opened by Ic \&Eo
+.It Ic \&Eo  Ta    Yes      Ta    Yes      Ta    closed by Ic \&Ec
+.It Ic \&Fc  Ta    Yes      Ta    Yes      Ta    opened by Ic \&Fo
+.It Ic \&Fo  Ta    \&No     Ta    \&No     Ta    closed by Ic \&Fc
+.It Ic \&Oc  Ta    Yes      Ta    Yes      Ta    closed by Ic \&Oo
+.It Ic \&Oo  Ta    Yes      Ta    Yes      Ta    opened by Ic \&Oc
+.It Ic \&Pc  Ta    Yes      Ta    Yes      Ta    closed by Ic \&Po
+.It Ic \&Po  Ta    Yes      Ta    Yes      Ta    opened by Ic \&Pc
+.It Ic \&Qc  Ta    Yes      Ta    Yes      Ta    opened by Ic \&Oo
+.It Ic \&Qo  Ta    Yes      Ta    Yes      Ta    closed by Ic \&Oc
+.It Ic \&Re  Ta    \&No     Ta    \&No     Ta    opened by Ic \&Rs
+.It Ic \&Rs  Ta    \&No     Ta    \&No     Ta    closed by Ic \&Re
+.It Ic \&Sc  Ta    Yes      Ta    Yes      Ta    opened by Ic \&So
+.It Ic \&So  Ta    Yes      Ta    Yes      Ta    closed by Ic \&Sc
+.It Ic \&Xc  Ta    Yes      Ta    Yes      Ta    opened by Ic \&Xo
+.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
 .El
 .Ss Block partial-implicit
 Like block full-implicit, but with single-line scope closed by the


@@ -2892,23 +2915,23 @@ end of the line.
 .Ed
 .Bl -column "MacroX" "CallableX" "ParsedX" -offset indent
 .It Em Macro Ta Em Callable Ta Em Parsed
 .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 Sx \&Bq  Ta    Yes      Ta    Yes
-.It Sx \&Brq Ta    Yes      Ta    Yes
-.It Sx \&D1  Ta    \&No     Ta    \&Yes
-.It Sx \&Dl  Ta    \&No     Ta    Yes
-.It Sx \&Dq  Ta    Yes      Ta    Yes
-.It Sx \&En  Ta    Yes      Ta    Yes
-.It Sx \&Op  Ta    Yes      Ta    Yes
-.It Sx \&Pq  Ta    Yes      Ta    Yes
-.It Sx \&Ql  Ta    Yes      Ta    Yes
-.It Sx \&Qq  Ta    Yes      Ta    Yes
-.It Sx \&Sq  Ta    Yes      Ta    Yes
-.It Sx \&Vt  Ta    Yes      Ta    Yes
+.It Ic \&Aq  Ta    Yes      Ta    Yes
+.It Ic \&Bq  Ta    Yes      Ta    Yes
+.It Ic \&Brq Ta    Yes      Ta    Yes
+.It Ic \&D1  Ta    \&No     Ta    \&Yes
+.It Ic \&Dl  Ta    \&No     Ta    Yes
+.It Ic \&Dq  Ta    Yes      Ta    Yes
+.It Ic \&En  Ta    Yes      Ta    Yes
+.It Ic \&Op  Ta    Yes      Ta    Yes
+.It Ic \&Pq  Ta    Yes      Ta    Yes
+.It Ic \&Ql  Ta    Yes      Ta    Yes
+.It Ic \&Qq  Ta    Yes      Ta    Yes
+.It Ic \&Sq  Ta    Yes      Ta    Yes
+.It Ic \&Vt  Ta    Yes      Ta    Yes

 .El
 .Pp
 Note that the
 .El
 .Pp
 Note that the

-.Sx \&Vt
+.Ic \&Vt

 macro is a
 .Sx Block partial-implicit
 only when invoked as the first macro
 macro is a
 .Sx Block partial-implicit
 only when invoked as the first macro


@@ -2918,17 +2941,17 @@ section line, else it is
 .Sx In-line .
 .Ss Special block macro
 The
 .Sx In-line .
 .Ss Special block macro
 The

-.Sx \&Ta
+.Ic \&Ta

 macro can only be used below
 macro can only be used below

-.Sx \&It
+.Ic \&It

 in
 in

-.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
 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,
 .El
 .Ss In-line
 Closed by the end of the line, fixed argument lengths,


@@ -2946,79 +2969,78 @@ then the macro accepts an arbitrary number of arguments.
 .Ed
 .Bl -column "MacroX" "CallableX" "ParsedX" "Arguments" -offset indent
 .It Em Macro Ta Em Callable Ta Em Parsed Ta Em Arguments
 .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 Sx \&%B  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%C  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%D  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%I  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%J  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%N  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%O  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%P  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%Q  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%R  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%T  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%U  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&%V  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&Ad  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&An  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Ap  Ta    Yes      Ta    Yes      Ta    0
-.It Sx \&Ar  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&At  Ta    Yes      Ta    Yes      Ta    1
-.It Sx \&Bsx Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Bt  Ta    \&No     Ta    \&No     Ta    0
-.It Sx \&Bx  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Cd  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Cm  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Db  Ta    \&No     Ta    \&No     Ta    1
-.It Sx \&Dd  Ta    \&No     Ta    \&No     Ta    n
-.It Sx \&Dt  Ta    \&No     Ta    \&No     Ta    n
-.It Sx \&Dv  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Dx  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Em  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Er  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Es  Ta    Yes      Ta    Yes      Ta    2
-.It Sx \&Ev  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Ex  Ta    \&No     Ta    \&No     Ta    n
-.It Sx \&Fa  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Fd  Ta    \&No     Ta    \&No     Ta    >0
-.It Sx \&Fl  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Fn  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Fr  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Ft  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Fx  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Hf  Ta    \&No     Ta    \&No     Ta    n
-.It Sx \&Ic  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&In  Ta    \&No     Ta    \&No     Ta    1
-.It Sx \&Lb  Ta    \&No     Ta    \&No     Ta    1
-.It Sx \&Li  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Lk  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Lp  Ta    \&No     Ta    \&No     Ta    0
-.It Sx \&Ms  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Mt  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Nm  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&No  Ta    Yes      Ta    Yes      Ta    0
-.It Sx \&Ns  Ta    Yes      Ta    Yes      Ta    0
-.It Sx \&Nx  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Os  Ta    \&No     Ta    \&No     Ta    n
-.It Sx \&Ot  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Ox  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Pa  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Pf  Ta    Yes      Ta    Yes      Ta    1
-.It Sx \&Pp  Ta    \&No     Ta    \&No     Ta    0
-.It Sx \&Rv  Ta    \&No     Ta    \&No     Ta    n
-.It Sx \&Sm  Ta    \&No     Ta    \&No     Ta    <2
-.It Sx \&St  Ta    \&No     Ta    Yes      Ta    1
-.It Sx \&Sx  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Sy  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Tn  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Ud  Ta    \&No     Ta    \&No     Ta    0
-.It Sx \&Ux  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Va  Ta    Yes      Ta    Yes      Ta    n
-.It Sx \&Vt  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Xr  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&br  Ta    \&No     Ta    \&No     Ta    0
-.It Sx \&sp  Ta    \&No     Ta    \&No     Ta    1
+.It Ic \&%A  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%B  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%C  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%D  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%I  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%J  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%N  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%O  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%P  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%Q  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%R  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%T  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%U  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&%V  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&Ad  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&An  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Ap  Ta    Yes      Ta    Yes      Ta    0
+.It Ic \&Ar  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&At  Ta    Yes      Ta    Yes      Ta    1
+.It Ic \&Bsx Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&Bt  Ta    \&No     Ta    \&No     Ta    0
+.It Ic \&Bx  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&Cd  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Cm  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Db  Ta    \&No     Ta    \&No     Ta    1
+.It Ic \&Dd  Ta    \&No     Ta    \&No     Ta    n
+.It Ic \&Dt  Ta    \&No     Ta    \&No     Ta    n
+.It Ic \&Dv  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Dx  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&Em  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Er  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Es  Ta    Yes      Ta    Yes      Ta    2
+.It Ic \&Ev  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Ex  Ta    \&No     Ta    \&No     Ta    n
+.It Ic \&Fa  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Fd  Ta    \&No     Ta    \&No     Ta    >0
+.It Ic \&Fl  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&Fn  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Fr  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Ft  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Fx  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&Hf  Ta    \&No     Ta    \&No     Ta    n
+.It Ic \&Ic  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&In  Ta    \&No     Ta    \&No     Ta    1
+.It Ic \&Lb  Ta    \&No     Ta    \&No     Ta    1
+.It Ic \&Li  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Lk  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Lp  Ta    \&No     Ta    \&No     Ta    0
+.It Ic \&Ms  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Mt  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Nm  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&No  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Ns  Ta    Yes      Ta    Yes      Ta    0
+.It Ic \&Nx  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&Os  Ta    \&No     Ta    \&No     Ta    n
+.It Ic \&Ot  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Ox  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&Pa  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&Pf  Ta    Yes      Ta    Yes      Ta    1
+.It Ic \&Pp  Ta    \&No     Ta    \&No     Ta    0
+.It Ic \&Rv  Ta    \&No     Ta    \&No     Ta    n
+.It Ic \&Sm  Ta    \&No     Ta    \&No     Ta    <2
+.It Ic \&St  Ta    \&No     Ta    Yes      Ta    1
+.It Ic \&Sx  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Sy  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Tg  Ta    \&No     Ta    \&No     Ta    <2
+.It Ic \&Tn  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Ud  Ta    \&No     Ta    \&No     Ta    0
+.It Ic \&Ux  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&Va  Ta    Yes      Ta    Yes      Ta    n
+.It Ic \&Vt  Ta    Yes      Ta    Yes      Ta    >0
+.It Ic \&Xr  Ta    Yes      Ta    Yes      Ta    2

 .El
 .Ss Delimiters
 When a macro argument consists of one single input character
 .El
 .Ss Delimiters
 When a macro argument consists of one single input character


@@ -3036,6 +3058,8 @@ For many macros, when the leading arguments are opening delimiters,
 these delimiters are put before the macro scope,
 and when the trailing arguments are closing delimiters,
 these delimiters are put after the macro scope.
 these delimiters are put before the macro scope,
 and when the trailing arguments are closing delimiters,
 these delimiters are put after the macro scope.

+Spacing is suppressed after opening delimiters
+and before closing delimiters.

 For example,
 .Pp
 .D1 Pf \. \&Aq "( [ word ] ) ."
 For example,
 .Pp
 .D1 Pf \. \&Aq "( [ word ] ) ."


@@ -3077,7 +3101,7 @@ exclamation mark
 Note that even a period preceded by a backslash
 .Pq Sq \e.\&
 gets this special handling; use
 Note that even a period preceded by a backslash
 .Pq Sq \e.\&
 gets this special handling; use

-.Sq \e&.
+.Sq \e&.\&

 to prevent that.
 .Pp
 Many in-line macros interrupt their scope when they encounter
 to prevent that.
 .Pp
 Many in-line macros interrupt their scope when they encounter


@@ -3092,7 +3116,7 @@ renders as:
 .D1 Fl a ( b | c \*(Ba d ) e
 .Pp
 This applies to both opening and closing delimiters,
 .D1 Fl a ( b | c \*(Ba d ) e
 .Pp
 This applies to both opening and closing delimiters,

-and also to the middle delimiter:
+and also to the middle delimiter, which does not suppress spacing:

 .Pp
 .Bl -tag -width Ds -offset indent -compact
 .It \&|
 .Pp
 .Bl -tag -width Ds -offset indent -compact
 .It \&|


@@ -3104,6 +3128,13 @@ in the same way as a plain
 .Sq \&|
 character.
 Using this predefined string is not recommended in new manuals.
 .Sq \&|
 character.
 Using this predefined string is not recommended in new manuals.

+.Pp
+Appending a zero-width space
+.Pq Sq \e&
+to the end of an input line is also useful to prevent the interpretation
+of a trailing period, exclamation or question mark as the end of a
+sentence, for example when an abbreviation happens to occur
+at the end of a text or macro input line.

 .Ss Font handling
 In
 .Nm
 .Ss Font handling
 In
 .Nm


@@ -3124,131 +3155,20 @@ Manually switching the font using the
 font escape sequences is never required.
 .Sh COMPATIBILITY
 This section provides an incomplete list of compatibility issues
 font escape sequences is never required.
 .Sh COMPATIBILITY
 This section provides an incomplete list of compatibility issues

-between mandoc and other troff implementations, at this time limited
-to GNU troff
+between mandoc and GNU troff

 .Pq Qq groff .
 .Pq Qq groff .

-The term
-.Qq historic groff
-refers to groff versions before 1.17,
-which featured a significant update of the
-.Pa doc.tmac
-file.
-.Pp
-Heirloom troff, the other significant troff implementation accepting
-\-mdoc, is similar to historic groff.

 .Pp
 The following problematic behaviour is found in groff:
 .Pp
 The following problematic behaviour is found in groff:

-.ds hist (Historic groff only.)

 .Pp
 .Bl -dash -compact
 .It
 .Pp
 .Bl -dash -compact
 .It

-Display macros
-.Po
-.Sx \&Bd ,
-.Sx \&Dl ,
-and
-.Sx \&D1
-.Pc
-may not be nested.
-\*[hist]
-.It
-.Sx \&At
-with unknown arguments produces no output at all.
-\*[hist]
-Newer groff and mandoc print
-.Qq AT&T UNIX
-and the arguments.
-.It
-.Sx \&Bl Fl column
-does not recognise trailing punctuation characters when they immediately
-precede tabulator characters, but treats them as normal text and
-outputs a space before them.
-.It
-.Sx \&Bd Fl ragged compact
-does not start a new line.
-\*[hist]
-.It
-.Sx \&Dd
-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,
-but without any arguments the string
-.Dq Epoch
-is printed.
-.It
-.Sx \&Fl
-does not print a dash for an empty argument.
-\*[hist]
-.It
-.Sx \&Fn
-does not start a new line unless invoked as the line macro in the
-.Em SYNOPSIS
-section.
-\*[hist]
-.It
-.Sx \&Fo
-with
-.Pf non- Sx \&Fa
-children causes inconsistent spacing between arguments.
-In mandoc, a single space is always inserted between arguments.
-.It
-.Sx \&Ft
-in the
-.Em SYNOPSIS
-causes inconsistent vertical spacing, depending on whether a prior
-.Sx \&Fn
-has been invoked.
-See
-.Sx \&Ft
-and
-.Sx \&Fn
-for the normalised behaviour in mandoc.
-.It
-.Sx \&In
-ignores additional arguments and is not treated specially in the
-.Em SYNOPSIS .
-\*[hist]
-.It
-.Sx \&It
-sometimes requires a
-.Fl nested
-flag.
-\*[hist]
-In new groff and mandoc, any list may be nested by default and
-.Fl enum
-lists will restart the sequence only for the sub-list.
-.It
-.Sx \&Li
-followed by a delimiter is incorrectly used in some manuals
-instead of properly quoting that character, which sometimes works with
-historic groff.
-.It
-.Sx \&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
 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
 can only be called by other macros, but not at the beginning of a line.
 .It

-.Sx \&%C
-is not implemented (up to and including groff-1.22.2).
-.It
-Historic groff only allows up to eight or nine arguments per macro input
-line, depending on the exact situation.
-Providing more arguments causes garbled output.
-The number of arguments on one input line is not limited with mandoc.
-.It
-Historic groff has many un-callable macros.
-Most of these (excluding some block-level macros) are callable
-in new groff and mandoc.
-.It
-.Sq \(ba
-(vertical bar) is not fully supported as a delimiter.
-\*[hist]
-.It

 .Sq \ef
 .Pq font face
 and
 .Sq \ef
 .Pq font face
 and


@@ -3265,14 +3185,27 @@ The following features are unimplemented in mandoc:
 .Pp
 .Bl -dash -compact
 .It
 .Pp
 .Bl -dash -compact
 .It

-.Sx \&Bd
-.Fl file Ar file .
+.Ic \&Bd Fl file Ar file
+is unsupported for security reasons.

 .It
 .It

-.Sx \&Bd
+.Ic \&Bd
+.Fl filled
+does not adjust the right margin, but is an alias for
+.Ic \&Bd
+.Fl ragged .
+.It
+.Ic \&Bd
+.Fl literal
+does not use a literal font, but is an alias for
+.Ic \&Bd
+.Fl unfilled .
+.It
+.Ic \&Bd

 .Fl offset Cm center
 and
 .Fl offset Cm center
 and

-.Fl offset Cm right .
-Groff does not implement centred and flush-right rendering either,
+.Fl offset Cm right
+don't work.
+Groff does not implement centered and flush-right rendering either,

 but produces large indentations.
 .El
 .Sh SEE ALSO
 but produces large indentations.
 .El
 .Sh SEE ALSO


@@ -3283,6 +3216,18 @@ but produces large indentations.
 .Xr mandoc_char 7 ,
 .Xr roff 7 ,
 .Xr tbl 7
 .Xr mandoc_char 7 ,
 .Xr roff 7 ,
 .Xr tbl 7

+.Pp
+The web page
+.Lk https://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.
+.Pp
+The manual page
+.Lk https://man.voidlinux.org/groff_mdoc "groff_mdoc(7)"
+contained in the
+.Dq groff
+package documents exactly the same language in a somewhat different style.

 .Sh HISTORY
 The
 .Nm
 .Sh HISTORY
 The
 .Nm