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version 1.20, 2009/07/20 13:45:11 version 1.147, 2020/10/28 15:31:37
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 .\"     $Id$  .\"     $Id$
 .\"  .\"
 .\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>  .\" Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
   .\" Copyright (c) 2011-2015, 2017-2020 Ingo Schwarze <schwarze@openbsd.org>
   .\" Copyright (c) 2017 Anthony Bentley <bentley@openbsd.org>
   .\" Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
 .\"  .\"
 .\" Permission to use, copy, modify, and distribute this software for any  .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above  .\" purpose with or without fee is hereby granted, provided that the above
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 .Dd $Mdocdate$  .Dd $Mdocdate$
 .Dt MAN 7  .Dt MAN 7
 .Os  .Os
 .\" SECTION  
 .Sh NAME  .Sh NAME
 .Nm man  .Nm man
 .Nd man language reference  .Nd legacy formatting language for manual pages
 .\" SECTION  
 .Sh DESCRIPTION  .Sh DESCRIPTION
 The  The
 .Nm man  .Nm man
 language was historically used to format  language was the standard formatting language for
 .Ux  .At
 manuals.  This reference document describes its syntax, structure, and  manual pages from 1979 to 1989.
 usage.  Do not use it to write new manual pages: it is a purely presentational
 .Pp  language and lacks support for semantic markup.
 .Bf -emphasis  
 Do not use  
 .Nm  
 to write your manuals.  
 .Ef  
 Use the  Use the
 .Xr mdoc 7  .Xr mdoc 7
 language, instead.  language, instead.
 .\" PARAGRAPH  
 .Pp  .Pp
 An  In a
 .Nm  .Nm
 document follows simple rules:  lines beginning with the control  document, lines beginning with the control character
 character  
 .Sq \&.  .Sq \&.
 are parsed for macros.  Other lines are interpreted within the scope of  are called
 prior macros:  .Dq macro lines .
   The first word is the macro name.
   It usually consists of two capital letters.
   For a list of portable macros, see
   .Sx MACRO OVERVIEW .
   The words following the macro name are arguments to the macro.
   .Pp
   Lines not beginning with the control character are called
   .Dq text lines .
   They provide free-form text to be printed; the formatting of the text
   depends on the respective processing context:
 .Bd -literal -offset indent  .Bd -literal -offset indent
 \&.SH Macro lines change control state.  \&.SH Macro lines change control state.
 Other lines are interpreted within the current state.  Text lines are interpreted within the current state.
 .Ed  .Ed
 .\" SECTION  .Pp
 .Sh INPUT ENCODING  Many aspects of the basic syntax of the
 .Nm  .Nm
 documents may contain only graphable 7-bit ASCII characters, the  language are based on the
 space character, and the tabs character.  All manuals must have  .Xr roff 7
 .Ux  language; see the
 line termination.  .Em LANGUAGE SYNTAX
   and
   .Em MACRO SYNTAX
   sections in the
   .Xr roff 7
   manual for details, in particular regarding
   comments, escape sequences, whitespace, and quoting.
 .Pp  .Pp
 Blank lines are acceptable; where found, the output will assert a  Each
 vertical space.  .Nm
   document starts with the
   .Ic TH
   macro specifying the document's name and section, followed by the
   .Sx NAME
   section formatted as follows:
   .Bd -literal -offset indent
   \&.TH PROGNAME 1 1979-01-10
   \&.SH NAME
   \efBprogname\efR \e(en one line about what it does
   .Ed
   .Sh MACRO OVERVIEW
   This overview is sorted such that macros of similar purpose are listed
   together.
   Deprecated and non-portable macros are not included in the overview,
   but can be found in the alphabetical reference below.
   .Ss Page header and footer meta-data
   .Bl -column "RS, RE" description
   .It Ic TH Ta set the title: Ar name section date Op Ar source Op Ar volume
   .It Ic AT Ta display AT&T UNIX version in the page footer (<= 1 argument)
   .It Ic UC Ta display BSD version in the page footer (<= 1 argument)
   .El
   .Ss Sections and paragraphs
   .Bl -column "RS, RE" description
   .It Ic SH Ta section header (one line)
   .It Ic SS Ta subsection header (one line)
   .It Ic PP Ta start an undecorated paragraph (no arguments)
   .It Ic RS , RE Ta reset the left margin: Op Ar width
   .It Ic IP Ta indented paragraph: Op Ar head Op Ar width
   .It Ic TP Ta tagged paragraph: Op Ar width
   .It Ic PD Ta set vertical paragraph distance: Op Ar height
   .It Ic in Ta additional indent: Op Ar width
   .El
   .Ss Physical markup
   .Bl -column "RS, RE" description
   .It Ic B Ta boldface font
   .It Ic I Ta italic font
   .It Ic SB Ta small boldface font
   .It Ic SM Ta small roman font
   .It Ic BI Ta alternate between boldface and italic fonts
   .It Ic BR Ta alternate between boldface and roman fonts
   .It Ic IB Ta alternate between italic and boldface fonts
   .It Ic IR Ta alternate between italic and roman fonts
   .It Ic RB Ta alternate between roman and boldface fonts
   .It Ic RI Ta alternate between roman and italic fonts
   .El
   .Sh MACRO REFERENCE
   This section is a canonical reference to all macros, arranged
   alphabetically.
   For the scoping of individual macros, see
   .Sx MACRO SYNTAX .
   .Bl -tag -width 3n
   .It Ic AT
   Sets the volume for the footer for compatibility with man pages from
   .At
   releases.
   The optional arguments specify which release it is from.
   This macro is an extension that first appeared in
   .Bx 4.3 .
   .It Ic B
   Text is rendered in bold face.
   .It Ic BI
   Text is rendered alternately in bold face and italic.
   Thus,
   .Sq .BI this word and that
   causes
   .Sq this
   and
   .Sq and
   to render in bold face, while
   .Sq word
   and
   .Sq that
   render in italics.
   Whitespace between arguments is omitted in output.
 .Pp  .Pp
   Example:
   .Pp
   .Dl \&.BI bold italic bold italic
   .It Ic BR
   Text is rendered alternately in bold face and roman (the default font).
   Whitespace between arguments is omitted in output.
   See also
   .Ic BI .
   .It Ic DT
   Restore the default tabulator positions.
   They are at intervals of 0.5 inches.
   This has no effect unless the tabulator positions were changed with the
   .Xr roff 7
   .Ic ta
   request.
   .It Ic EE
   This is a non-standard Version 9
   .At
   extension later adopted by GNU.
   In
   .Xr mandoc 1 ,
   it does the same as the
   .Xr roff 7
   .Ic fi
   request (switch to fill mode).
   .It Ic EX
   This is a non-standard Version 9
   .At
   extension later adopted by GNU.
   In
   .Xr mandoc 1 ,
   it does the same as the
   .Xr roff 7
   .Ic nf
   request (switch to no-fill mode).
   .It Ic HP
   Begin a paragraph whose initial output line is left-justified, but
   subsequent output lines are indented, with the following syntax:
   .Pp
   .D1 Pf . Ic HP Op Ar width
   .Pp
 The  The
 .Sq \ec  .Ar width
 escape is common in historical  argument is a
 .Nm  .Xr roff 7
 documents; if encountered at the end of a word, it ensures that the  scaling width.
 subsequent word isn't off-set by whitespace.  If specified, it's saved for later paragraph left margins;
 .\" SUB-SECTION  if unspecified, the saved or default width is used.
 .Ss Comments  
 Anything following a  
 .Sq \e"  
 delimiter is considered a comment (unless the  
 .Sq \e  
 itself has been escaped) and is ignored to the end of line.  
 Furthermore, a macro line with only a control character  
 .Sq \. ,  
 optionally followed by whitespace, is ignored.  
 .\" SUB-SECTION  
 .Ss Special Characters  
 Special character sequences begin with the escape character  
 .Sq \e  
 followed by either an open-parenthesis  
 .Sq \&(  
 for two-character sequences; an open-bracket  
 .Sq \&[  
 for n-character sequences (terminated at a close-bracket  
 .Sq \&] ) ;  
 or a single one-character sequence.  
 .Pp  .Pp
 Characters may alternatively be escaped by a slash-asterisk,  This macro is portable, but deprecated
 .Sq \e* ,  because it has no good representation in HTML output,
 with the same combinations as described above.  usually ending up indistinguishable from
   .Ic PP .
   .It Ic I
   Text is rendered in italics.
   .It Ic IB
   Text is rendered alternately in italics and bold face.
   Whitespace between arguments is omitted in output.
   See also
   .Ic BI .
   .It Ic IP
   Begin an indented paragraph with the following syntax:
 .Pp  .Pp
 Terms may also be text-decorated using the  .D1 Pf . Ic IP Op Ar head Op Ar width
 .Sq \ef  
 escape followed by a text-decoration letter: B (bold), I, (italic), or P  
 and R (Roman, or reset).  
 .\" SUB-SECTION  
 .Ss Whitespace  
 Unless specifically escaped, consecutive blocks of whitespace are pruned  
 from input.  These are later re-added, if applicable, by a front-end  
 utility such as  
 .Xr mandoc 1 .  
 .\" SECTION  
 .Sh STRUCTURE  
 Each  
 .Nm  
 document must contain contains at least the  
 .Sq \&.TH  
 macro describing the document's section and title.  It may occur  
 anywhere in the document, although conventionally, it appears as the  
 first macro.  
 .Pp  .Pp
 Beyond the  The
 .Sq \&.TH ,  .Ar width
 at least one macro or text node must appear in the document.  argument is a
 .\" SECTION  .Xr roff 7
 .Sh SYNTAX  scaling width defining the left margin.
 Macros are one to three three characters in length and begin with a  It's saved for later paragraph left-margins; if unspecified, the saved or
 control character ,  default width is used.
 .Sq \&. ,  .Pp
 at the beginning of the line.  An arbitrary amount of whitespace may  The
 sit between the control character and the macro name.  Thus,  .Ar head
 .Sq \&.PP  argument is used as a leading term, flushed to the left margin.
   This is useful for bulleted paragraphs and so on.
   .It Ic IR
   Text is rendered alternately in italics and roman (the default font).
   Whitespace between arguments is omitted in output.
   See also
   .Ic BI .
   .It Ic LP
   A synonym for
   .Ic PP .
   .It Ic ME
   End a mailto block started with
   .Ic MT .
   This is a non-standard GNU extension.
   .It Ic MT
   Begin a mailto block.
   This is a non-standard GNU extension.
   It has the following syntax:
   .Bd -unfilled -offset indent
   .Pf . Ic MT Ar address
   link description to be shown
   .Pf . Ic ME
   .Ed
   .It Ic OP
   Optional command-line argument.
   This is a non-standard GNU extension.
   It has the following syntax:
   .Pp
   .D1 Pf . Ic OP Ar key Op Ar value
   .Pp
   The
   .Ar key
   is usually a command-line flag and
   .Ar value
   its argument.
   .It Ic P
   This synonym for
   .Ic PP
   is an
   .At III
   extension later adopted by
   .Bx 4.3 .
   .It Ic PD
   Specify the vertical space to be inserted before each new paragraph.
   .br
   The syntax is as follows:
   .Pp
   .D1 Pf . Ic PD Op Ar height
   .Pp
   The
   .Ar height
   argument is a
   .Xr roff 7
   scaling width.
   It defaults to
   .Cm 1v .
   If the unit is omitted,
   .Cm v
   is assumed.
   .Pp
   This macro affects the spacing before any subsequent instances of
   .Ic HP ,
   .Ic IP ,
   .Ic LP ,
   .Ic P ,
   .Ic PP ,
   .Ic SH ,
   .Ic SS ,
   .Ic SY ,
 and  and
 .Sq \&.\ \ \ \&PP  .Ic TP .
 are equivalent.  .It Ic PP
   Begin an undecorated paragraph.
   The scope of a paragraph is closed by a subsequent paragraph,
   sub-section, section, or end of file.
   The saved paragraph left-margin width is reset to the default.
   .It Ic RB
   Text is rendered alternately in roman (the default font) and bold face.
   Whitespace between arguments is omitted in output.
   See also
   .Ic BI .
   .It Ic RE
   Explicitly close out the scope of a prior
   .Ic RS .
   The default left margin is restored to the state before that
   .Ic RS
   invocation.
 .Pp  .Pp
 All  The syntax is as follows:
 .Nm  .Pp
 macros follow the same structural rules:  .D1 Pf . Ic RE Op Ar level
 .Bd -literal -offset indent  .Pp
 \&.YO \(lBbody...\(rB  Without an argument, the most recent
   .Ic RS
   block is closed out.
   If
   .Ar level
   is 1, all open
   .Ic RS
   blocks are closed out.
   Otherwise,
   .Ar level No \(mi 1
   nested
   .Ic RS
   blocks remain open.
   .It Ic RI
   Text is rendered alternately in roman (the default font) and italics.
   Whitespace between arguments is omitted in output.
   See also
   .Ic BI .
   .It Ic RS
   Temporarily reset the default left margin.
   This has the following syntax:
   .Pp
   .D1 Pf . Ic RS Op Ar width
   .Pp
   The
   .Ar width
   argument is a
   .Xr roff 7
   scaling width.
   If not specified, the saved or default width is used.
   .Pp
   See also
   .Ic RE .
   .It Ic SB
   Text is rendered in small size (one point smaller than the default font)
   bold face.
   This macro is an extension that probably first appeared in SunOS 4.0
   and was later adopted by GNU and by
   .Bx 4.4 .
   .It Ic SH
   Begin a section.
   The scope of a section is only closed by another section or the end of
   file.
   The paragraph left-margin width is reset to the default.
   .It Ic SM
   Text is rendered in small size (one point smaller than the default
   font).
   .It Ic SS
   Begin a sub-section.
   The scope of a sub-section is closed by a subsequent sub-section,
   section, or end of file.
   The paragraph left-margin width is reset to the default.
   .It Ic SY
   Begin a synopsis block with the following syntax:
   .Bd -unfilled -offset indent
   .Pf . Ic SY Ar command
   .Ar arguments
   .Pf . Ic YS
 .Ed  .Ed
 .Pp  .Pp
   This is a non-standard GNU extension
   and very rarely used even in GNU manual pages.
   Formatting is similar to
   .Ic IP .
   .It Ic TH
   Set the name of the manual page for use in the page header
   and footer with the following syntax:
   .Pp
   .D1 Pf . Ic TH Ar name section date Op Ar source Op Ar volume
   .Pp
   Conventionally, the document
   .Ar name
   is given in all caps.
 The  The
 .Dq body  .Ar section
 consists of zero or more arguments to the macro.  is usually a single digit, in a few cases followed by a letter.
   The recommended
   .Ar date
   format is
   .Sy YYYY-MM-DD
   as specified in the ISO-8601 standard;
   if the argument does not conform, it is printed verbatim.
   If the
   .Ar date
   is empty or not specified, the current date is used.
   The optional
   .Ar source
   string specifies the organisation providing the utility.
   When unspecified,
   .Xr mandoc 1
   uses its
   .Fl Ios
   argument.
   The
   .Ar volume
   string replaces the default volume title of the
   .Ar section .
 .Pp  .Pp
   Examples:
   .Pp
   .Dl \&.TH CVS 5 "1992-02-12" GNU
   .It Ic TP
   Begin a paragraph where the head, if exceeding the indentation width, is
   followed by a newline; if not, the body follows on the same line after
   advancing to the indentation width.
   Subsequent output lines are indented.
   The syntax is as follows:
   .Bd -unfilled -offset indent
   .Pf . Ic TP Op Ar width
   .Ar head No \e" one line
   .Ar body
   .Ed
   .Pp
   The
   .Ar width
   argument is a
   .Xr roff 7
   scaling width.
   If specified, it's saved for later paragraph left-margins; if
   unspecified, the saved or default width is used.
   .It Ic TQ
   Like
   .Ic TP ,
   except that no vertical spacing is inserted before the paragraph.
   This is a non-standard GNU extension
   and very rarely used even in GNU manual pages.
   .It Ic UC
   Sets the volume for the footer for compatibility with man pages from
   .Bx
   releases.
   The optional first argument specifies which release it is from.
   This macro is an extension that first appeared in
   .Bx 3 .
   .It Ic UE
   End a uniform resource identifier block started with
   .Ic UR .
   This is a non-standard GNU extension.
   .It Ic UR
   Begin a uniform resource identifier block.
   This is a non-standard GNU extension.
   It has the following syntax:
   .Bd -unfilled -offset indent
   .Pf . Ic UR Ar uri
   link description to be shown
   .Pf . Ic UE
   .Ed
   .It Ic YS
   End a synopsis block started with
   .Ic SY .
   This is a non-standard GNU extension.
   .It Ic in
   Indent relative to the current indentation:
   .Pp
   .D1 Pf . Ic in Op Ar width
   .Pp
   If
   .Ar width
   is signed, the new offset is relative.
   Otherwise, it is absolute.
   This value is reset upon the next paragraph, section, or sub-section.
   .El
   .Sh MACRO SYNTAX
   The
 .Nm  .Nm
 has a primitive notion of multi-line scope for the following macros:  macros are classified by scope: line scope or block scope.
 .Sq \&.TM ,  Line macros are only scoped to the current line (and, in some
 .Sq \&.SM ,  situations, the subsequent line).
 .Sq \&.SB ,  Block macros are scoped to the current line and subsequent lines until
 .Sq \&.BI ,  closed by another block macro.
 .Sq \&.IB ,  .Ss Line Macros
 .Sq \&.BR ,  Line macros are generally scoped to the current line, with the body
 .Sq \&.RB ,  consisting of zero or more arguments.
 .Sq \&.R ,  If a macro is scoped to the next line and the line arguments are empty,
 .Sq \&.B ,  the next line, which must be text, is used instead.
 .Sq \&.I ,  Thus:
 .Sq \&.IR  
 and  
 .Sq \&.RI .  
 When these macros are invoked without arguments, the subsequent line is  
 considered a continuation of the macro.  Thus:  
 .Bd -literal -offset indent  .Bd -literal -offset indent
 \&.RI  \&.I
 foo  foo
 .Ed  .Ed
 .Pp  .Pp
 is equivalent to  is equivalent to
 .Sq \&.RI foo .  .Sq .I foo .
 If two consecutive lines exhibit the latter behaviour,  If next-line macros are invoked consecutively, only the last is used.
 an error is raised.  Thus, the following is not acceptable:  If a next-line macro is followed by a non-next-line macro, an error is
   raised.
   .Pp
   The syntax is as follows:
 .Bd -literal -offset indent  .Bd -literal -offset indent
 \&.RI  \&.YO \(lBbody...\(rB
 \&.I  \(lBbody...\(rB
 Hello, world.  
 .Ed  .Ed
 .Pp  .Bl -column "MacroX" "ArgumentsX" "ScopeXXXXX" "CompatX" -offset indent
 The  .It Em Macro Ta Em Arguments Ta Em Scope     Ta Em Notes
 .Sq \&.TP  .It Ic AT  Ta    <=1       Ta    current   Ta    \&
 macro is similar, but does not need an empty argument line to trigger  .It Ic B   Ta    n         Ta    next-line Ta    \&
 the behaviour.  .It Ic BI  Ta    n         Ta    current   Ta    \&
 .\" SECTION  .It Ic BR  Ta    n         Ta    current   Ta    \&
 .Sh MACROS  .It Ic DT  Ta    0         Ta    current   Ta    \&
 This section contains a complete list of all  .It Ic EE  Ta    0         Ta    current   Ta    Version 9 At
 .Nm  .It Ic EX  Ta    0         Ta    current   Ta    Version 9 At
 macros and corresponding number of arguments.  .It Ic I   Ta    n         Ta    next-line Ta    \&
 .Pp  .It Ic IB  Ta    n         Ta    current   Ta    \&
 .Bl -column "MacroX" "Arguments" -compact -offset indent  .It Ic IR  Ta    n         Ta    current   Ta    \&
 .It Em Macro Ta Em Arguments  .It Ic OP  Ta    >=1       Ta    current   Ta    GNU
 .It \&.TH    Ta    >1, <6  .It Ic PD  Ta    1         Ta    current   Ta    \&
 .It \&.SH    Ta    >0  .It Ic RB  Ta    n         Ta    current   Ta    \&
 .It \&.SS    Ta    >0  .It Ic RI  Ta    n         Ta    current   Ta    \&
 .It \&.TP    Ta    n  .It Ic SB  Ta    n         Ta    next-line Ta    \&
 .It \&.LP    Ta    0  .It Ic SM  Ta    n         Ta    next-line Ta    \&
 .It \&.PP    Ta    0  .It Ic TH  Ta    >1, <6    Ta    current   Ta    \&
 .It \&.P     Ta    0  .It Ic UC  Ta    <=1       Ta    current   Ta    \&
 .It \&.IP    Ta    <3  .It Ic in  Ta    1         Ta    current   Ta    Xr roff 7
 .It \&.HP    Ta    <2  
 .It \&.SM    Ta    n  
 .It \&.SB    Ta    n  
 .It \&.BI    Ta    n  
 .It \&.IB    Ta    n  
 .It \&.BR    Ta    n  
 .It \&.RB    Ta    n  
 .It \&.R     Ta    n  
 .It \&.B     Ta    n  
 .It \&.I     Ta    n  
 .It \&.IR    Ta    n  
 .It \&.RI    Ta    n  
 .El  .El
   .Ss Block Macros
   Block macros comprise a head and body.
   As with in-line macros, the head is scoped to the current line and, in
   one circumstance, the next line (the next-line stipulations as in
   .Sx Line Macros
   apply here as well).
 .Pp  .Pp
 Although not historically part of the  The syntax is as follows:
 .Nm  .Bd -literal -offset indent
 system, the following macros are also supported:  \&.YO \(lBhead...\(rB
   \(lBhead...\(rB
   \(lBbody...\(rB
   .Ed
 .Pp  .Pp
 .Bl -column "MacroX" "Arguments" -compact -offset indent  The closure of body scope may be to the section, where a macro is closed
 .It Em Macro Ta Em Arguments  by
 .It \&.br    Ta    0  .Ic SH ;
 .It \&.i     Ta    n  sub-section, closed by a section or
   .Ic SS ;
   or paragraph, closed by a section, sub-section,
   .Ic HP ,
   .Ic IP ,
   .Ic LP ,
   .Ic P ,
   .Ic PP ,
   .Ic RE ,
   .Ic SY ,
   or
   .Ic TP .
   No closure refers to an explicit block closing macro.
   .Pp
   As a rule, block macros may not be nested; thus, calling a block macro
   while another block macro scope is open, and the open scope is not
   implicitly closed, is syntactically incorrect.
   .Bl -column "MacroX" "ArgumentsX" "Head ScopeX" "sub-sectionX" "compatX" -offset indent
   .It Em Macro Ta Em Arguments Ta Em Head Scope Ta Em Body Scope  Ta Em Notes
   .It Ic HP  Ta    <2        Ta    current    Ta    paragraph   Ta    \&
   .It Ic IP  Ta    <3        Ta    current    Ta    paragraph   Ta    \&
   .It Ic LP  Ta    0         Ta    current    Ta    paragraph   Ta    \&
   .It Ic ME  Ta    0         Ta    none       Ta    none        Ta    GNU
   .It Ic MT  Ta    1         Ta    current    Ta    to \&ME     Ta    GNU
   .It Ic P   Ta    0         Ta    current    Ta    paragraph   Ta    \&
   .It Ic PP  Ta    0         Ta    current    Ta    paragraph   Ta    \&
   .It Ic RE  Ta    <=1       Ta    current    Ta    none        Ta    \&
   .It Ic RS  Ta    1         Ta    current    Ta    to \&RE     Ta    \&
   .It Ic SH  Ta    >0        Ta    next-line  Ta    section     Ta    \&
   .It Ic SS  Ta    >0        Ta    next-line  Ta    sub-section Ta    \&
   .It Ic SY  Ta    1         Ta    current    Ta    to \&YS     Ta    GNU
   .It Ic TP  Ta    n         Ta    next-line  Ta    paragraph   Ta    \&
   .It Ic TQ  Ta    n         Ta    next-line  Ta    paragraph   Ta    GNU
   .It Ic UE  Ta    0         Ta    current    Ta    none        Ta    GNU
   .It Ic UR  Ta    1         Ta    current    Ta    part        Ta    GNU
   .It Ic YS  Ta    0         Ta    none       Ta    none        Ta    GNU
 .El  .El
 .Pp  .Pp
 These follow the same calling conventions as the above  If a block macro is next-line scoped, it may only be followed by in-line
   macros for decorating text.
   .Ss Font handling
   In
 .Nm  .Nm
 macros.  documents, both
 .\" SECTION  .Sx Physical markup
 .Sh COMPATIBILITY  macros and
 See  .Xr roff 7
 .Xr mdoc 7  .Ql \ef
 for groff compatibility notes.  font escape sequences can be used to choose fonts.
 .\" SECTION  In text lines, the effect of manual font selection by escape sequences
   only lasts until the next macro invocation; in macro lines, it only lasts
   until the end of the macro scope.
   Note that macros like
   .Ic BR
   open and close a font scope for each argument.
 .Sh SEE ALSO  .Sh SEE ALSO
   .Xr man 1 ,
 .Xr mandoc 1 ,  .Xr mandoc 1 ,
 .Xr mandoc_char 7  .Xr eqn 7 ,
 .\" SECTION  .Xr mandoc_char 7 ,
   .Xr mdoc 7 ,
   .Xr roff 7 ,
   .Xr tbl 7
   .Sh HISTORY
   The
   .Nm
   language first appeared as a macro package for the roff typesetting
   system in
   .At v7 .
   .Pp
   The stand-alone implementation that is part of the
   .Xr mandoc 1
   utility first appeared in
   .Ox 4.6 .
 .Sh AUTHORS  .Sh AUTHORS
   .An -nosplit
   .An Douglas McIlroy Aq Mt m.douglas.mcilroy@dartmouth.edu
   designed and implemented the original version of these macros,
   wrote the original version of this manual page,
   and was the first to use them when he edited volume 1 of the
   .At v7
   manual pages.
   .Pp
   .An James Clark
   later rewrote the macros for groff.
   .An Eric S. Raymond Aq Mt esr@thyrsus.com
   and
   .An Werner Lemberg Aq Mt wl@gnu.org
   added the extended
   .Nm
   macros to groff in 2007.
   .Pp
 The  The
   .Xr mandoc 1
   program and this
 .Nm  .Nm
 utility was written by  reference were written by
 .An Kristaps Dzonsons Aq kristaps@kth.se .  .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv .
 .\" SECTION  
 .Sh CAVEATS  
 Do not use this language.  Use  
 .Xr mdoc 7 ,  
 instead.  
Legend:
Removed from v.1.20  
changed lines
  Added in v.1.147
CVSweb