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Diff for /mandoc/man.7 between version 1.78 and 1.91

version 1.78, 2010/07/19 23:21:39 version 1.91, 2010/12/06 15:31:19
Line 111  The
Line 111  The
 attribute is forgotten when entering or exiting a macro block.  attribute is forgotten when entering or exiting a macro block.
 .Ss Whitespace  .Ss Whitespace
 Whitespace consists of the space character.  Whitespace consists of the space character.
 In free-form lines, whitespace is preserved within a line; un-escaped  In free-form lines, whitespace is preserved within a line; unescaped
 trailing spaces are stripped from input (unless in a literal context).  trailing spaces are stripped from input (unless in a literal context).
 Blank free-form lines, which may include spaces, are permitted and  Blank free-form lines, which may include spaces, are permitted and
 rendered as an empty line.  rendered as an empty line.
Line 190  this differs from
Line 190  this differs from
 which, if a unit is not provided, will instead interpret the string as  which, if a unit is not provided, will instead interpret the string as
 literal text.  literal text.
 .Ss Sentence Spacing  .Ss Sentence Spacing
 When composing a manual, make sure that your sentences end at the end of  When composing a manual, make sure that sentences end at the end of
 a line.  a line.
 By doing so, front-ends will be able to apply the proper amount of  By doing so, front-ends will be able to apply the proper amount of
 spacing after the end of sentence (unescaped) period, exclamation mark,  spacing after the end of sentence (unescaped) period, exclamation mark,
 or question mark followed by zero or more non-sentence closing  or question mark followed by zero or more non-sentence closing
 delimiters (  delimiters
 .Ns Sq \&) ,  .Po
   .Sq \&) ,
 .Sq \&] ,  .Sq \&] ,
 .Sq \&' ,  .Sq \&' ,
 .Sq \&" ) .  .Sq \&"
   .Pc .
 .Sh MANUAL STRUCTURE  .Sh MANUAL STRUCTURE
 Each  Each
 .Nm  .Nm
 document must contain contains at least the  document must contain the
 .Sx \&TH  .Sx \&TH
 macro describing the document's section and title.  macro describing the document's section and title.
 It may occur anywhere in the document, although conventionally, it  It may occur anywhere in the document, although conventionally it
 appears as the first macro.  appears as the first macro.
 .Pp  .Pp
 Beyond  Beyond
Line 217  Documents are generally structured as follows:
Line 219  Documents are generally structured as follows:
 \&.TH FOO 1 2009-10-10  \&.TH FOO 1 2009-10-10
 \&.SH NAME  \&.SH NAME
 \efBfoo\efR \e(en a description goes here  \efBfoo\efR \e(en a description goes here
 \&.\e\*q The next is for sections 2 & 3 only.  
 \&.\e\*q .SH LIBRARY  \&.\e\*q .SH LIBRARY
   \&.\e\*q For sections 2 & 3 only.
   \&.\e\*q Not used in OpenBSD.
 \&.SH SYNOPSIS  \&.SH SYNOPSIS
 \efBfoo\efR [\efB\e-options\efR] arguments...  \efBfoo\efR [\efB\e-options\efR] arguments...
 \&.SH DESCRIPTION  \&.SH DESCRIPTION
 The \efBfoo\efR utility processes files...  The \efBfoo\efR utility processes files...
 \&.\e\*q .SH IMPLEMENTATION NOTES  \&.\e\*q .SH IMPLEMENTATION NOTES
 \&.\e\*q The next is for sections 2, 3, & 9 only.  \&.\e\*q Not used in OpenBSD.
 \&.\e\*q .SH RETURN VALUES  \&.\e\*q .SH RETURN VALUES
 \&.\e\*q The next is for sections 1, 6, 7, & 8 only.  \&.\e\*q For sections 2, 3, & 9 only.
 \&.\e\*q .SH ENVIRONMENT  \&.\e\*q .SH ENVIRONMENT
   \&.\e\*q For sections 1, 6, 7, & 8 only.
 \&.\e\*q .SH FILES  \&.\e\*q .SH FILES
 \&.\e\*q The next is for sections 1 & 8 only.  
 \&.\e\*q .SH EXIT STATUS  \&.\e\*q .SH EXIT STATUS
   \&.\e\*q For sections 1, 6, & 8 only.
 \&.\e\*q .SH EXAMPLES  \&.\e\*q .SH EXAMPLES
 \&.\e\*q The next is for sections 1, 4, 6, 7, & 8 only.  
 \&.\e\*q .SH DIAGNOSTICS  \&.\e\*q .SH DIAGNOSTICS
 \&.\e\*q The next is for sections 2, 3, & 9 only.  \&.\e\*q For sections 1, 4, 6, 7, & 8 only.
 \&.\e\*q .SH ERRORS  \&.\e\*q .SH ERRORS
   \&.\e\*q For sections 2, 3, & 9 only.
 \&.\e\*q .SH SEE ALSO  \&.\e\*q .SH SEE ALSO
 \&.\e\*q .BR foo ( 1 )  \&.\e\*q .BR foo ( 1 )
 \&.\e\*q .SH STANDARDS  \&.\e\*q .SH STANDARDS
Line 244  The \efBfoo\efR utility processes files...
Line 248  The \efBfoo\efR utility processes files...
 \&.\e\*q .SH CAVEATS  \&.\e\*q .SH CAVEATS
 \&.\e\*q .SH BUGS  \&.\e\*q .SH BUGS
 \&.\e\*q .SH SECURITY CONSIDERATIONS  \&.\e\*q .SH SECURITY CONSIDERATIONS
   \&.\e\*q Not used in OpenBSD.
 .Ed  .Ed
 .Pp  .Pp
 The sections in a  The sections in a
Line 291  Implementation-specific notes should be kept here.
Line 296  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
 effects or notable algorithmic implications.  effects or notable algorithmic implications.
 .It Em RETURN VALUES  .It Em RETURN VALUES
 This section is the dual of  This section documents the return values of functions in sections 2, 3, and 9.
 .Em EXIT STATUS ,  
 which is used for commands.  
 It documents the return values of functions in sections 2, 3, and 9.  
 .It Em ENVIRONMENT  .It Em ENVIRONMENT
 Documents any usages of environment variables, e.g.,  Documents any usages of environment variables, e.g.,
 .Xr environ 7 .  .Xr environ 7 .
Line 303  Documents files used.
Line 305  Documents files used.
 It's helpful to document both the file name and a short description of how  It's helpful to document both the file name and a short description of how
 the file is used (created, modified, etc.).  the file is used (created, modified, etc.).
 .It Em EXIT STATUS  .It Em EXIT STATUS
 Command exit status for section 1, 6, and 8 manuals.  This section documents the command exit status for
 This section is the dual of  section 1, 6, and 8 utilities.
 .Em RETURN VALUES ,  
 which is used for functions.  
 Historically, this information was described in  Historically, this information was described in
 .Em DIAGNOSTICS ,  .Em DIAGNOSTICS ,
 a practise that is now discouraged.  a practise that is now discouraged.
Line 314  a practise that is now discouraged.
Line 314  a practise that is now discouraged.
 Example usages.  Example usages.
 This often contains snippets of well-formed,  This often contains snippets of well-formed,
 well-tested invocations.  well-tested invocations.
 Make doubly sure that your 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.  This is most useful in section 4 manuals.
Line 341  If not adhering to any standards, the
Line 341  If not adhering to any standards, the
 .Em HISTORY  .Em HISTORY
 section should be used.  section should be used.
 .It Em HISTORY  .It Em HISTORY
 The history of any manual without a  A brief history of the subject, including where support first appeared.
 .Em STANDARDS  
 section should be described in this section.  
 .It Em AUTHORS  .It Em AUTHORS
 Credits to authors, if applicable, should appear in this section.  Credits to the person or persons who wrote the code and/or documentation.
 Authors should generally be noted by both name and email address.  Authors should generally be noted by both name and email address.
 .It Em CAVEATS  .It Em CAVEATS
 Common misuses and misunderstandings should be explained  Common misuses and misunderstandings should be explained
 in this section.  in this section.
 .It Em BUGS  .It Em BUGS
 Known bugs, limitations and work-arounds should be described  Known bugs, limitations, and work-arounds should be described
 in this section.  in this section.
 .It Em SECURITY CONSIDERATIONS  .It Em SECURITY CONSIDERATIONS
 Documents any security precautions that operators should consider.  Documents any security precautions that operators should consider.
 .El  .El
 .Sh MACRO SYNTAX  .Sh MACRO SYNTAX
 Macros are one to three three characters in length and begin with a  Macros are one to three characters in length and begin with a
 control character,  control character,
 .Sq \&. ,  .Sq \&. ,
 at the beginning of the line.  at the beginning of the line.
Line 416  The syntax is as follows:
Line 414  The syntax is as follows:
 .It Sx \&I   Ta    n         Ta    next-line Ta    \&  .It Sx \&I   Ta    n         Ta    next-line Ta    \&
 .It Sx \&IB  Ta    n         Ta    current   Ta    \&  .It Sx \&IB  Ta    n         Ta    current   Ta    \&
 .It Sx \&IR  Ta    n         Ta    current   Ta    \&  .It Sx \&IR  Ta    n         Ta    current   Ta    \&
 .\" .It Sx \&PD  Ta    n         Ta    current   Ta    compat  
 .It Sx \&R   Ta    n         Ta    next-line 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    \&
Line 426  The syntax is as follows:
Line 423  The syntax is as follows:
 .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 \&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 \&i   Ta    n         Ta    current   Ta    compat  .It Sx \&i   Ta    n         Ta    current   Ta    compat
   .It Sx \&in  Ta    1         Ta    current   Ta    compat
 .It Sx \&na  Ta    0         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 \&r   Ta    0         Ta    current   Ta    compat  .It Sx \&r   Ta    0         Ta    current   Ta    compat
 .It Sx \&sp  Ta    1         Ta    current   Ta    compat  .It Sx \&sp  Ta    1         Ta    current   Ta    compat
 .\" .It Sx \&Sp  Ta    <1        Ta    current   Ta    compat  
 .\" .It Sx \&Vb  Ta    <1        Ta    current   Ta    compat  
 .\" .It Sx \&Ve  Ta    0         Ta    current   Ta    compat  
 .El  .El
 .Pp  .Pp
 Macros marked as  Macros marked as
Line 444  These macros should not be used for portable
Line 440  These macros should not be used for portable
 .Nm  .Nm
 manuals.  manuals.
 .Ss Block Macros  .Ss Block Macros
 Block macros are comprised of a head and body.  Block macros comprise a head and body.
 Like for in-line macros, the head is scoped to the current line and, in  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  one circumstance, the next line (the next-line stipulations as in
 .Sx Line Macros  .Sx Line Macros
 apply here as well).  apply here as well).
Line 602  See also
Line 598  See also
 and  and
 .Sx \&r .  .Sx \&r .
 .Ss \&IB  .Ss \&IB
 Text is rendered alternately in italics and bold face.  Whitespace  Text is rendered alternately in italics and bold face.
 between arguments is omitted in output.  Whitespace between arguments is omitted in output.
 .Pp  .Pp
 See  See
 .Sx \&BI  .Sx \&BI
Line 626  Begin an indented paragraph with the following syntax:
Line 622  Begin an indented paragraph with the following syntax:
 The  The
 .Cm width  .Cm width
 argument defines the width of the left margin and is defined by  argument defines the width of the left margin and is defined by
 .Sx Scaling Widths ,  .Sx Scaling Widths .
 It's saved for later paragraph left-margins; if unspecified, the saved or  It's saved for later paragraph left-margins; if unspecified, the saved or
 default width is used.  default width is used.
 .Pp  .Pp
Line 822  See also
Line 818  See also
 .Sx \&P ,  .Sx \&P ,
 and  and
 .Sx \&PP .  .Sx \&PP .
 .\" .  
 .\" .  
 .\" .Ss \&PD  
 .\" Has no effect.  Included for compatibility.  
 .\" .  
 .\" .  
 .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
 BSD releases.  BSD releases.
Line 841  See also
Line 831  See also
 .Ss \&fi  .Ss \&fi
 End literal mode begun by  End literal mode begun by
 .Sx \&nf .  .Sx \&nf .
   .Ss \&ft
   Change the current font mode.
   See
   .Sx Text Decoration
   for a listing of available font modes.
 .Ss \&i  .Ss \&i
 Italicise arguments.  Italicise arguments.
 Synonym for  Synonym for
Line 853  See also
Line 848  See also
 .Sx \&b ,  .Sx \&b ,
 and  and
 .Sx \&r .  .Sx \&r .
   .Ss \&in
   Indent relative to the current indentation:
   .Pp
   .D1 Pf \. Sx \&in Op Cm width
   .Pp
   If
   .Cm width
   is signed, the new offset is relative.
   Otherwise, it is absolute.
   This value is reset upon the next paragraph, section, or sub-section.
 .Ss \&na  .Ss \&na
 Don't align to the right margin.  Don't align to the right margin.
 .Ss \&nf  .Ss \&nf
Line 888  Defaults to 1, if unspecified.
Line 893  Defaults to 1, if unspecified.
 .Pp  .Pp
 See also  See also
 .Sx \&br .  .Sx \&br .
 .\" .Ss \&Sp  
 .\" A synonym for  
 .\" .Sx \&sp  
 .\" .Cm 0.5v .  
 .\" .  
 .\" .Ss \&Vb  
 .\" A synonym for  
 .\" .Sx \&nf .  
 .\" Accepts an argument (the height of the formatted space) which is  
 .\" disregarded.  
 .\" .  
 .\" .Ss \&Ve  
 .\" A synonym for  
 .\" .Sx \&fi .  
 .\" .  
 .Sh COMPATIBILITY  .Sh COMPATIBILITY
 This section documents areas of questionable portability between  This section documents areas of questionable portability between
 implementations of the  implementations of the
Line 911  language.
Line 901  language.
 .Pp  .Pp
 .Bl -dash -compact  .Bl -dash -compact
 .It  .It
 The \es (font size), \em (font colour), and \eM (font filling colour)  
 font decoration escapes are all discarded in mandoc.  
 .It  
 In quoted literals, GNU troff allowed pair-wise double-quotes to produce  In quoted literals, GNU troff allowed pair-wise double-quotes to produce
 a standalone double-quote in formatted output.  a standalone double-quote in formatted output.
 It is not known whether this behaviour is exhibited by other formatters.  It is not known whether this behaviour is exhibited by other formatters.
 .It  .It
   troff suppresses a newline before
   .Sq \(aq
   macro output; in mandoc, it is an alias for the standard
   .Sq \&.
   control character.
   .It
 The  The
   .Sq \eh
   .Pq horizontal position ,
   .Sq \ev
   .Pq vertical position ,
   .Sq \em
   .Pq text colour ,
   .Sq \eM
   .Pq text filling colour ,
   .Sq \ez
   .Pq zero-length character ,
   .Sq \ew
   .Pq string length ,
   .Sq \ek
   .Pq horizontal position marker ,
   .Sq \eo
   .Pq text overstrike ,
   and
   .Sq \es
   .Pq text size
   escape sequences are all discarded in mandoc.
   .It
   The
   .Sq \ef
   scaling unit is accepted by mandoc, but rendered as the default unit.
   .It
   The
 .Sx \&sp  .Sx \&sp
 macro does not accept negative values in mandoc.  macro does not accept negative values in mandoc.
 In GNU troff, this would result in strange behaviour.  In GNU troff, this would result in strange behaviour.
 .It  
 The  
 .Sq \(aq  
 macro control character, in GNU troff (and prior troffs) suppresses a  
 newline before macro output; in mandoc, it is an alias for the standard  
 .Sq \&.  
 control character.  
 .El  .El
 .Sh SEE ALSO  .Sh SEE ALSO
   .Xr man 1 ,
 .Xr mandoc 1 ,  .Xr mandoc 1 ,
 .Xr mandoc_char 7  .Xr mandoc_char 7 ,
   .Xr mdoc 7
 .Sh HISTORY  .Sh HISTORY
 The  The
 .Nm  .Nm
Line 943  It was later rewritten by James Clark as a macro packa
Line 957  It was later rewritten by James Clark as a macro packa
 The stand-alone implementation that is part of the  The stand-alone implementation that is part of the
 .Xr mandoc 1  .Xr mandoc 1
 utility written by Kristaps Dzonsons appeared in  utility written by Kristaps Dzonsons appeared in
 .Ox 4.6.  .Ox 4.6 .
 .Sh AUTHORS  .Sh AUTHORS
 This  This
 .Nm  .Nm
Legend:
Removed from v.1.78  
changed lines
  Added in v.1.91
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