version 1.121, 2013/12/31 15:17:51 |
version 1.139, 2018/08/18 02:08:27 |
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|
.\" $Id$ |
.\" $Id$ |
.\" |
.\" |
.\" Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv> |
.\" Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv> |
.\" Copyright (c) 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org> |
.\" Copyright (c) 2011-2015, 2017, 2018 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 |
Line 97 file for a utility |
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Line 99 file for a utility |
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.Bd -literal -offset indent |
.Bd -literal -offset indent |
\&.TH PROGNAME 1 2009-10-10 |
\&.TH PROGNAME 1 2009-10-10 |
\&.SH NAME |
\&.SH NAME |
\efBprogname\efR \e(en a description goes here |
\efBprogname\efR \e(en one line about what it does |
\&.\e\(dq .SH LIBRARY |
\&.\e\(dq .SH LIBRARY |
\&.\e\(dq For sections 2 & 3 only. |
\&.\e\(dq For sections 2, 3, and 9 only. |
\&.\e\(dq Not used in OpenBSD. |
\&.\e\(dq Not used in OpenBSD. |
\&.SH SYNOPSIS |
\&.SH SYNOPSIS |
\efBprogname\efR [\efB\e-options\efR] arguments... |
\efBprogname\efR [\efB\e-options\efR] \efIfile ...\efR |
\&.SH DESCRIPTION |
\&.SH DESCRIPTION |
The \efBfoo\efR utility processes files... |
The \efBfoo\efR utility processes files ... |
|
\&.\e\(dq .Sh CONTEXT |
|
\&.\e\(dq For section 9 functions only. |
\&.\e\(dq .SH IMPLEMENTATION NOTES |
\&.\e\(dq .SH IMPLEMENTATION NOTES |
\&.\e\(dq Not used in OpenBSD. |
\&.\e\(dq Not used in OpenBSD. |
\&.\e\(dq .SH RETURN VALUES |
\&.\e\(dq .SH RETURN VALUES |
\&.\e\(dq For sections 2, 3, & 9 only. |
\&.\e\(dq For sections 2, 3, and 9 function return values only. |
\&.\e\(dq .SH ENVIRONMENT |
\&.\e\(dq .SH ENVIRONMENT |
\&.\e\(dq For sections 1, 6, 7, & 8 only. |
\&.\e\(dq For sections 1, 6, 7, and 8 only. |
\&.\e\(dq .SH FILES |
\&.\e\(dq .SH FILES |
\&.\e\(dq .SH EXIT STATUS |
\&.\e\(dq .SH EXIT STATUS |
\&.\e\(dq For sections 1, 6, & 8 only. |
\&.\e\(dq For sections 1, 6, and 8 only. |
\&.\e\(dq .SH EXAMPLES |
\&.\e\(dq .SH EXAMPLES |
\&.\e\(dq .SH DIAGNOSTICS |
\&.\e\(dq .SH DIAGNOSTICS |
\&.\e\(dq For sections 1, 4, 6, 7, & 8 only. |
\&.\e\(dq For sections 1, 4, 6, 7, 8, and 9 printf/stderr messages only. |
\&.\e\(dq .SH ERRORS |
\&.\e\(dq .SH ERRORS |
\&.\e\(dq For sections 2, 3, & 9 only. |
\&.\e\(dq For sections 2, 3, 4, and 9 errno settings only. |
\&.\e\(dq .SH SEE ALSO |
\&.\e\(dq .SH SEE ALSO |
\&.\e\(dq .BR foo ( 1 ) |
\&.\e\(dq .BR foobar ( 1 ) |
\&.\e\(dq .SH STANDARDS |
\&.\e\(dq .SH STANDARDS |
\&.\e\(dq .SH HISTORY |
\&.\e\(dq .SH HISTORY |
\&.\e\(dq .SH AUTHORS |
\&.\e\(dq .SH AUTHORS |
Line 170 This expands upon the brief, one-line description in |
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Line 174 This expands upon the brief, one-line description in |
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.Em NAME . |
.Em NAME . |
It usually contains a break-down of the options (if documenting a |
It usually contains a break-down of the options (if documenting a |
command). |
command). |
|
.It Em CONTEXT |
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This section lists the contexts in which functions can be called in section 9. |
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The contexts are autoconf, process, or interrupt. |
.It Em IMPLEMENTATION NOTES |
.It Em IMPLEMENTATION NOTES |
Implementation-specific notes should be kept here. |
Implementation-specific notes should be kept here. |
This is useful when implementing standard functions that may have side |
This is useful when implementing standard functions that may have side |
Line 196 well-tested invocations. |
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Line 203 well-tested invocations. |
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Make sure that examples work properly! |
Make sure that examples work properly! |
.It Em DIAGNOSTICS |
.It Em DIAGNOSTICS |
Documents error conditions. |
Documents error conditions. |
This is most useful in section 4 manuals. |
In section 4 and 9 manuals, these are usually messages |
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printed by the kernel to the console and to the kernel log. |
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In section 1, 6, 7, and 8, these are usually messages |
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printed by userland programs to the standard error output. |
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.Pp |
Historically, this section was used in place of |
Historically, this section was used in place of |
.Em EXIT STATUS |
.Em EXIT STATUS |
for manuals in sections 1, 6, and 8; however, this practise is |
for manuals in sections 1, 6, and 8; however, this practise is |
discouraged. |
discouraged. |
.It Em ERRORS |
.It Em ERRORS |
Documents error handling in sections 2, 3, and 9. |
Documents |
|
.Xr errno 2 |
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settings in sections 2, 3, 4, and 9. |
.It Em SEE ALSO |
.It Em SEE ALSO |
References other manuals with related topics. |
References other manuals with related topics. |
This section should exist for most manuals. |
This section should exist for most manuals. |
Line 254 in the alphabetical reference below. |
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Line 267 in the alphabetical reference below. |
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.It Sx TP Ta tagged paragraph: Op Ar width |
.It Sx TP Ta tagged paragraph: Op Ar width |
.It Sx HP Ta hanged paragraph: Op Ar width |
.It Sx HP Ta hanged paragraph: Op Ar width |
.It Sx PD Ta set vertical paragraph distance: Op Ar height |
.It Sx PD Ta set vertical paragraph distance: Op Ar height |
.It Sx \&br Ta force output line break in text mode (no arguments) |
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.It Sx \&sp Ta force vertical space: Op Ar height |
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.It Sx fi , nf Ta fill mode and no-fill mode (no arguments) |
.It Sx fi , nf Ta fill mode and no-fill mode (no arguments) |
.It Sx in Ta additional indent: Op Ar width |
.It Sx in Ta additional indent: Op Ar width |
.El |
.El |
Line 263 in the alphabetical reference below. |
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Line 274 in the alphabetical reference below. |
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.Bl -column "PP, LP, P" description |
.Bl -column "PP, LP, P" description |
.It Sx B Ta boldface font |
.It Sx B Ta boldface font |
.It Sx I Ta italic font |
.It Sx I Ta italic font |
.It Sx R Ta roman (default) font |
|
.It Sx SB Ta small boldface font |
.It Sx SB Ta small boldface font |
.It Sx SM Ta small roman font |
.It Sx SM Ta small roman font |
.It Sx BI Ta alternate between boldface and italic fonts |
.It Sx BI Ta alternate between boldface and italic fonts |
Line 280 For the scoping of individual macros, see |
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Line 290 For the scoping of individual macros, see |
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.Sx MACRO SYNTAX . |
.Sx MACRO SYNTAX . |
.Ss \&AT |
.Ss \&AT |
Sets the volume for the footer for compatibility with man pages from |
Sets the volume for the footer for compatibility with man pages from |
.Tn AT&T UNIX |
.At |
releases. |
releases. |
The optional arguments specify which release it is from. |
The optional arguments specify which release it is from. |
.Ss \&B |
.Ss \&B |
Text is rendered in bold face. |
Text is rendered in bold face. |
.Pp |
.Pp |
See also |
See also |
.Sx \&I |
.Sx \&I . |
and |
|
.Sx \&R . |
|
.Ss \&BI |
.Ss \&BI |
Text is rendered alternately in bold face and italic. |
Text is rendered alternately in bold face and italic. |
Thus, |
Thus, |
|
|
and |
and |
.Sx \&IR . |
.Sx \&IR . |
.Ss \&DT |
.Ss \&DT |
Has no effect. |
Restore the default tabulator positions. |
Included for compatibility. |
They are at intervals of 0.5 inches. |
|
This has no effect unless the tabulator positions were changed with the |
|
.Xr roff 7 |
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.Ic \&ta |
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request. |
.Ss \&EE |
.Ss \&EE |
This is a non-standard GNU extension, included only for compatibility. |
This is a non-standard GNU extension, included only for compatibility. |
In |
In |
Line 357 Begin a paragraph whose initial output line is left-ju |
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Line 369 Begin a paragraph whose initial output line is left-ju |
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subsequent output lines are indented, with the following syntax: |
subsequent output lines are indented, with the following syntax: |
.Bd -filled -offset indent |
.Bd -filled -offset indent |
.Pf \. Sx \&HP |
.Pf \. Sx \&HP |
.Op Cm width |
.Op Ar width |
.Ed |
.Ed |
.Pp |
.Pp |
The |
The |
.Cm width |
.Ar width |
argument is a |
argument is a |
.Xr roff 7 |
.Xr roff 7 |
scaling width. |
scaling width. |
|
|
Text is rendered in italics. |
Text is rendered in italics. |
.Pp |
.Pp |
See also |
See also |
.Sx \&B |
.Sx \&B . |
and |
|
.Sx \&R . |
|
.Ss \&IB |
.Ss \&IB |
Text is rendered alternately in italics and bold face. |
Text is rendered alternately in italics and bold face. |
Whitespace between arguments is omitted in output. |
Whitespace between arguments is omitted in output. |
|
|
Begin an indented paragraph with the following syntax: |
Begin an indented paragraph with the following syntax: |
.Bd -filled -offset indent |
.Bd -filled -offset indent |
.Pf \. Sx \&IP |
.Pf \. Sx \&IP |
.Op Cm head Op Cm width |
.Op Ar head Op Ar width |
.Ed |
.Ed |
.Pp |
.Pp |
The |
The |
.Cm width |
.Ar width |
argument is a |
argument is a |
.Xr roff 7 |
.Xr roff 7 |
scaling width defining the left margin. |
scaling width defining the left margin. |
Line 413 It's saved for later paragraph left-margins; if unspec |
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Line 423 It's saved for later paragraph left-margins; if unspec |
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default width is used. |
default width is used. |
.Pp |
.Pp |
The |
The |
.Cm head |
.Ar head |
argument is used as a leading term, flushed to the left margin. |
argument is used as a leading term, flushed to the left margin. |
This is useful for bulleted paragraphs and so on. |
This is useful for bulleted paragraphs and so on. |
.Pp |
.Pp |
|
|
.Sx \&PP , |
.Sx \&PP , |
and |
and |
.Sx \&TP . |
.Sx \&TP . |
|
.Ss \&ME |
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End a mailto block. |
|
This is a non-standard GNU extension, included only for compatibility. |
|
See |
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.Sx \&MT . |
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.Ss \&MT |
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Begin a mailto block. |
|
This is a non-standard GNU extension, included only for compatibility. |
|
It has the following syntax: |
|
.Bd -literal -offset indent |
|
.Pf \. Sx \&MT Ar address |
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link description to be shown |
|
.Pf \. Sx ME |
|
.Ed |
.Ss \&OP |
.Ss \&OP |
Optional command-line argument. |
Optional command-line argument. |
This is a non-standard GNU extension, included only for compatibility. |
This is a non-standard GNU extension, included only for compatibility. |
It has the following syntax: |
It has the following syntax: |
.Bd -filled -offset indent |
.Bd -filled -offset indent |
.Pf \. Sx \&OP |
.Pf \. Sx \&OP |
.Cm key Op Cm value |
.Ar key Op Ar value |
.Ed |
.Ed |
.Pp |
.Pp |
The |
The |
.Cm key |
.Ar key |
is usually a command-line flag and |
is usually a command-line flag and |
.Cm value |
.Ar value |
its argument. |
its argument. |
.Ss \&P |
.Ss \&P |
Synonym for |
Synonym for |
Line 483 Specify the vertical space to be inserted before each |
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Line 507 Specify the vertical space to be inserted before each |
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The syntax is as follows: |
The syntax is as follows: |
.Bd -filled -offset indent |
.Bd -filled -offset indent |
.Pf \. Sx \&PD |
.Pf \. Sx \&PD |
.Op Cm height |
.Op Ar height |
.Ed |
.Ed |
.Pp |
.Pp |
The |
The |
.Cm height |
.Ar height |
argument is a |
argument is a |
.Xr roff 7 |
.Xr roff 7 |
scaling width. |
scaling width. |
|
|
.Sx \&P , |
.Sx \&P , |
and |
and |
.Sx \&TP . |
.Sx \&TP . |
.Ss \&R |
|
Text is rendered in roman (the default font). |
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.Pp |
|
See also |
|
.Sx \&I |
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and |
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.Sx \&B . |
|
.Ss \&RB |
.Ss \&RB |
Text is rendered alternately in roman (the default font) and bold face. |
Text is rendered alternately in roman (the default font) and bold face. |
Whitespace between arguments is omitted in output. |
Whitespace between arguments is omitted in output. |
|
|
.Ss \&RE |
.Ss \&RE |
Explicitly close out the scope of a prior |
Explicitly close out the scope of a prior |
.Sx \&RS . |
.Sx \&RS . |
The default left margin is restored to the state of the original |
The default left margin is restored to the state before that |
.Sx \&RS |
.Sx \&RS |
invocation. |
invocation. |
|
.Pp |
|
The syntax is as follows: |
|
.Bd -filled -offset indent |
|
.Pf \. Sx \&RE |
|
.Op Ar level |
|
.Ed |
|
.Pp |
|
Without an argument, the most recent |
|
.Sx \&RS |
|
block is closed out. |
|
If |
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.Ar level |
|
is 1, all open |
|
.Sx \&RS |
|
blocks are closed out. |
|
Otherwise, |
|
.Ar level No \(mi 1 |
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nested |
|
.Sx \&RS |
|
blocks remain open. |
.Ss \&RI |
.Ss \&RI |
Text is rendered alternately in roman (the default font) and italics. |
Text is rendered alternately in roman (the default font) and italics. |
Whitespace between arguments is omitted in output. |
Whitespace between arguments is omitted in output. |
Line 566 Temporarily reset the default left margin. |
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Line 603 Temporarily reset the default left margin. |
|
This has the following syntax: |
This has the following syntax: |
.Bd -filled -offset indent |
.Bd -filled -offset indent |
.Pf \. Sx \&RS |
.Pf \. Sx \&RS |
.Op Cm width |
.Op Ar width |
.Ed |
.Ed |
.Pp |
.Pp |
The |
The |
.Cm width |
.Ar width |
argument is a |
argument is a |
.Xr roff 7 |
.Xr roff 7 |
scaling width. |
scaling width. |
Line 594 Begin a sub-section. |
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Line 631 Begin a sub-section. |
|
The scope of a sub-section is closed by a subsequent sub-section, |
The scope of a sub-section is closed by a subsequent sub-section, |
section, or end of file. |
section, or end of file. |
The paragraph left-margin width is reset to the default. |
The paragraph left-margin width is reset to the default. |
|
.Ss \&SY |
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Begin a synopsis block with the following syntax: |
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.Bd -unfilled -offset indent |
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.Pf \. Sx \&SY Ar command |
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.Ar arguments |
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.Pf \. Sx \&YS |
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.Ed |
|
.Pp |
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This is a non-standard GNU extension |
|
and very rarely used even in GNU manual pages. |
|
Formatting is similar to |
|
.Sx \&IP . |
.Ss \&TH |
.Ss \&TH |
Sets the title of the manual page with the following syntax: |
Sets the title of the manual page for use in the page header |
|
and footer with the following syntax: |
.Bd -filled -offset indent |
.Bd -filled -offset indent |
.Pf \. Sx \&TH |
.Pf \. Sx \&TH |
.Ar title section date |
.Ar title section date |
Line 617 is empty or not specified, the current date is used. |
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Line 667 is empty or not specified, the current date is used. |
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The optional |
The optional |
.Ar source |
.Ar source |
string specifies the organisation providing the utility. |
string specifies the organisation providing the utility. |
|
When unspecified, |
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.Xr mandoc 1 |
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uses its |
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.Fl Ios |
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argument. |
The |
The |
.Ar volume |
.Ar volume |
string replaces the default rendered volume, which is dictated by the |
string replaces the default rendered volume, which is dictated by the |
Line 633 Subsequent output lines are indented. |
|
Line 688 Subsequent output lines are indented. |
|
The syntax is as follows: |
The syntax is as follows: |
.Bd -filled -offset indent |
.Bd -filled -offset indent |
.Pf \. Sx \&TP |
.Pf \. Sx \&TP |
.Op Cm width |
.Op Ar width |
.Ed |
.Ed |
.Pp |
.Pp |
The |
The |
.Cm width |
.Ar width |
argument is a |
argument is a |
.Xr roff 7 |
.Xr roff 7 |
scaling width. |
scaling width. |
|
|
.Sx \&P , |
.Sx \&P , |
and |
and |
.Sx \&PP . |
.Sx \&PP . |
|
.Ss \&TQ |
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Like |
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.Sx \&TP , |
|
except that no vertical spacing is inserted before the paragraph. |
|
This is a non-standard GNU extension and rarely used even by GNU |
|
manual pages. |
.Ss \&UC |
.Ss \&UC |
Sets the volume for the footer for compatibility with man pages from |
Sets the volume for the footer for compatibility with man pages from |
.Bx |
.Bx |
Line 670 It has the following syntax: |
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Line 731 It has the following syntax: |
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link description to be shown |
link description to be shown |
.Pf \. Sx UE |
.Pf \. Sx UE |
.Ed |
.Ed |
.Ss \&br |
.Ss \&YS |
Breaks the current line. |
End a synopsis block started by |
Consecutive invocations have no further effect. |
.Pf \. Sx SY . |
.Pp |
This is a non-standard GNU extension. |
See also |
|
.Sx \&sp . |
|
.Ss \&fi |
.Ss \&fi |
End literal mode begun by |
End literal mode begun by |
.Sx \&nf . |
.Sx \&nf . |
.Ss \&ft |
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Change the current font mode. |
|
See |
|
.Sx Text Decoration |
|
for a listing of available font modes. |
|
.Ss \&in |
.Ss \&in |
Indent relative to the current indentation: |
Indent relative to the current indentation: |
.Pp |
.Pp |
.D1 Pf \. Sx \&in Op Cm width |
.D1 Pf \. Sx \&in Op Ar width |
.Pp |
.Pp |
If |
If |
.Cm width |
.Ar width |
is signed, the new offset is relative. |
is signed, the new offset is relative. |
Otherwise, it is absolute. |
Otherwise, it is absolute. |
This value is reset upon the next paragraph, section, or sub-section. |
This value is reset upon the next paragraph, section, or sub-section. |
.Ss \&na |
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Don't align to the right margin. |
|
.Ss \&nf |
.Ss \&nf |
Begin literal mode: all subsequent free-form lines have their end of |
Begin literal mode: all subsequent free-form lines have their end of |
line boundaries preserved. |
line boundaries preserved. |
Line 705 Literal mode is implicitly ended by |
|
Line 757 Literal mode is implicitly ended by |
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.Sx \&SH |
.Sx \&SH |
or |
or |
.Sx \&SS . |
.Sx \&SS . |
.Ss \&sp |
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Insert vertical spaces into output with the following syntax: |
|
.Bd -filled -offset indent |
|
.Pf \. Sx \&sp |
|
.Op Cm height |
|
.Ed |
|
.Pp |
|
The |
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.Cm height |
|
argument is a scaling width as described in |
|
.Xr roff 7 . |
|
If 0, this is equivalent to the |
|
.Sx \&br |
|
macro. |
|
Defaults to 1, if unspecified. |
|
.Pp |
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See also |
|
.Sx \&br . |
|
.Sh MACRO SYNTAX |
.Sh MACRO SYNTAX |
The |
The |
.Nm |
.Nm |
Line 746 is equivalent to |
|
Line 780 is equivalent to |
|
.Sq \&.I foo . |
.Sq \&.I foo . |
If next-line macros are invoked consecutively, only the last is used. |
If next-line macros are invoked consecutively, only the last is used. |
If a next-line macro is followed by a non-next-line macro, an error is |
If a next-line macro is followed by a non-next-line macro, an error is |
raised, except for |
raised. |
.Sx \&br , |
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.Sx \&sp , |
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and |
|
.Sx \&na . |
|
.Pp |
.Pp |
The syntax is as follows: |
The syntax is as follows: |
.Bd -literal -offset indent |
.Bd -literal -offset indent |
Line 771 The syntax is as follows: |
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Line 801 The syntax is as follows: |
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.It Sx \&IR Ta n Ta current Ta \& |
.It Sx \&IR Ta n Ta current Ta \& |
.It Sx \&OP Ta 0, 1 Ta current Ta compat |
.It Sx \&OP Ta 0, 1 Ta current Ta compat |
.It Sx \&PD Ta 1 Ta current Ta \& |
.It Sx \&PD Ta 1 Ta current Ta \& |
.It Sx \&R Ta n Ta next-line Ta \& |
|
.It Sx \&RB Ta n Ta current Ta \& |
.It Sx \&RB Ta n Ta current Ta \& |
.It Sx \&RI Ta n Ta current Ta \& |
.It Sx \&RI Ta n Ta current Ta \& |
.It Sx \&SB Ta n Ta next-line Ta \& |
.It Sx \&SB Ta n Ta next-line Ta \& |
.It Sx \&SM Ta n Ta next-line Ta \& |
.It Sx \&SM Ta n Ta next-line Ta \& |
.It Sx \&TH Ta >1, <6 Ta current Ta \& |
.It Sx \&TH Ta >1, <6 Ta current Ta \& |
.It Sx \&UC Ta <=1 Ta current Ta \& |
.It Sx \&UC Ta <=1 Ta current Ta \& |
.It Sx \&br Ta 0 Ta current Ta compat |
|
.It Sx \&fi Ta 0 Ta current Ta compat |
.It Sx \&fi Ta 0 Ta current Ta compat |
.It Sx \&ft Ta 1 Ta current Ta compat |
|
.It Sx \&in Ta 1 Ta current Ta compat |
.It Sx \&in Ta 1 Ta current Ta compat |
.It Sx \&na Ta 0 Ta current Ta compat |
|
.It Sx \&nf Ta 0 Ta current Ta compat |
.It Sx \&nf Ta 0 Ta current Ta compat |
.It Sx \&sp Ta 1 Ta current Ta compat |
|
.El |
.El |
.Pp |
.Pp |
Macros marked as |
Macros marked as |
Line 866 until the end of the macro scope. |
|
Line 891 until the end of the macro scope. |
|
Note that macros like |
Note that macros like |
.Sx \&BR |
.Sx \&BR |
open and close a font scope for each argument. |
open and close a font scope for each argument. |
.Sh COMPATIBILITY |
|
This section documents areas of questionable portability between |
|
implementations of the |
|
.Nm |
|
language. |
|
.Pp |
|
.Bl -dash -compact |
|
.It |
|
Do not depend on |
|
.Sx \&SH |
|
or |
|
.Sx \&SS |
|
to close out a literal context opened with |
|
.Sx \&nf . |
|
This behaviour may not be portable. |
|
.It |
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In quoted literals, GNU troff allowed pair-wise double-quotes to produce |
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a standalone double-quote in formatted output. |
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It is not known whether this behaviour is exhibited by other formatters. |
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.It |
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troff suppresses a newline before |
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.Sq \(aq |
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macro output; in mandoc, it is an alias for the standard |
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.Sq \&. |
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control character. |
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.It |
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The |
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.Sq \eh |
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.Pq horizontal position , |
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.Sq \ev |
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.Pq vertical position , |
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.Sq \em |
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.Pq text colour , |
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.Sq \eM |
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.Pq text filling colour , |
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.Sq \ez |
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.Pq zero-length character , |
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.Sq \ew |
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.Pq string length , |
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.Sq \ek |
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.Pq horizontal position marker , |
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.Sq \eo |
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.Pq text overstrike , |
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and |
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.Sq \es |
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.Pq text size |
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escape sequences are all discarded in mandoc. |
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.It |
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The |
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.Sq \ef |
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scaling unit is accepted by mandoc, but rendered as the default unit. |
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.It |
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The |
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.Sx \&sp |
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macro does not accept negative values in mandoc. |
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In GNU troff, this would result in strange behaviour. |
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.It |
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In page header lines, GNU troff versions up to and including 1.21 |
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only print |
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.Ar volume |
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names explicitly specified in the |
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.Sx \&TH |
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macro; mandoc and newer groff print the default volume name |
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corresponding to the |
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.Ar section |
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number when no |
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.Ar volume |
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is given, like in |
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.Xr mdoc 7 . |
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.El |
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.Pp |
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The |
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.Sx OP |
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macro is part of the extended |
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.Nm |
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macro set, and may not be portable to non-GNU troff implementations. |
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.Sh SEE ALSO |
.Sh SEE ALSO |
.Xr man 1 , |
.Xr man 1 , |
.Xr mandoc 1 , |
.Xr mandoc 1 , |