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Diff for /mandoc/mdoc.7 between version 1.223 and 1.229

version 1.223, 2013/12/25 14:09:32 version 1.229, 2014/06/22 17:07:06
Line 125  file for a utility
Line 125  file for a utility
 \&.Nm progname  \&.Nm progname
 \&.Nd one line about what it does  \&.Nd one line about what it does
 \&.\e\(dq .Sh LIBRARY  \&.\e\(dq .Sh LIBRARY
 \&.\e\(dq For sections 2, 3, & 9 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
 \&.Nm progname  \&.Nm progname
Line 135  file for a utility
Line 135  file for a utility
 The  The
 \&.Nm  \&.Nm
 utility processes files ...  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 .Xr foobar 1  \&.\e\(dq .Xr foobar 1
 \&.\e\(dq .Sh STANDARDS  \&.\e\(dq .Sh STANDARDS
Line 318  macro followed by a non-standard section name, and eac
Line 320  macro followed by a non-standard section name, and eac
 several subsections, like in the present  several subsections, like in the present
 .Nm  .Nm
 manual.  manual.
   .It Em CONTEXT
   This section lists the contexts in which functions can be called in section 9.
   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 358  Example usages.
Line 363  Example usages.
 This often contains snippets of well-formed, well-tested invocations.  This often contains snippets of well-formed, well-tested invocations.
 Make sure that examples work properly!  Make sure that examples work properly!
 .It Em DIAGNOSTICS  .It Em DIAGNOSTICS
 Documents error conditions.  Documents error messages.
 This is most useful in section 4 manuals.  In section 4 and 9 manuals, these are usually messages printed by the
   kernel to the console and to the kernel log.
   In section 1, 6, 7, and 8, these are usually messages printed by
   userland programs to the standard error output.
   .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
Line 369  See
Line 378  See
 .Sx \&Bl  .Sx \&Bl
 .Fl diag .  .Fl diag .
 .It Em ERRORS  .It Em ERRORS
 Documents error handling in sections 2, 3, and 9.  Documents
   .Xr errno 2
   settings in sections 2, 3, 4, and 9.
 .Pp  .Pp
 See  See
 .Sx \&Er .  .Sx \&Er .
Line 1305  It should be capitalised.
Line 1316  It should be capitalised.
 .It Ar section  .It Ar section
 The manual section.  The manual section.
 This may be one of  This may be one of
 .Ar 1  .Cm 1
 .Pq utilities ,  .Pq utilities ,
 .Ar 2  .Cm 2
 .Pq system calls ,  .Pq system calls ,
 .Ar 3  .Cm 3
 .Pq libraries ,  .Pq libraries ,
 .Ar 3p  .Cm 3p
 .Pq Perl libraries ,  .Pq Perl libraries ,
 .Ar 4  .Cm 4
 .Pq devices ,  .Pq devices ,
 .Ar 5  .Cm 5
 .Pq file formats ,  .Pq file formats ,
 .Ar 6  .Cm 6
 .Pq games ,  .Pq games ,
 .Ar 7  .Cm 7
 .Pq miscellaneous ,  .Pq miscellaneous ,
 .Ar 8  .Cm 8
 .Pq system utilities ,  .Pq system utilities ,
 .Ar 9  .Cm 9
 .Pq kernel functions ,  .Pq kernel functions ,
 .Ar X11  .Cm X11
 .Pq X Window System ,  .Pq X Window System ,
 .Ar X11R6  .Cm X11R6
 .Pq X Window System ,  .Pq X Window System ,
 .Ar unass  .Cm unass
 .Pq unassociated ,  .Pq unassociated ,
 .Ar local  .Cm local
 .Pq local system ,  .Pq local system ,
 .Ar draft  .Cm draft
 .Pq draft manual ,  .Pq draft manual ,
 or  or
 .Ar paper  .Cm paper
 .Pq paper .  .Pq paper .
 It should correspond to the manual's filename suffix and defaults to  It should correspond to the manual's filename suffix and defaults to
 .Dq 1  .Cm 1
 if unspecified.  if unspecified.
 .It Ar volume  .It Ar volume
 This overrides the volume inferred from  This overrides the volume inferred from
 .Ar section .  .Ar section .
 This field is optional, and if specified, must be one of  This field is optional, and if specified, must be one of
 .Ar USD  .Cm USD
 .Pq users' supplementary documents ,  .Pq users' supplementary documents ,
 .Ar PS1  .Cm PS1
 .Pq programmers' supplementary documents ,  .Pq programmers' supplementary documents ,
 .Ar AMD  .Cm AMD
 .Pq administrators' supplementary documents ,  .Pq administrators' supplementary documents ,
 .Ar SMM  .Cm SMM
 .Pq system managers' manuals ,  .Pq system managers' manuals ,
 .Ar URM  .Cm URM
 .Pq users' reference manuals ,  .Pq users' reference manuals ,
 .Ar PRM  .Cm PRM
 .Pq programmers' reference manuals ,  .Pq programmers' reference manuals ,
 .Ar KM  .Cm KM
 .Pq kernel manuals ,  .Pq kernel manuals ,
 .Ar IND  .Cm IND
 .Pq master index ,  .Pq master index ,
 .Ar MMI  .Cm MMI
 .Pq master index ,  .Pq master index ,
 .Ar LOCAL  .Cm LOCAL
 .Pq local manuals ,  .Pq local manuals ,
 .Ar LOC  .Cm LOC
 .Pq local manuals ,  .Pq local manuals ,
 or  or
 .Ar CON  .Cm CON
 .Pq contributed manuals .  .Pq contributed manuals .
 .It Ar arch  .It Ar arch
 This specifies the machine architecture a manual page applies to,  This specifies the machine architecture a manual page applies to,
Line 2354  and
Line 2365  and
 .Sx \&Sx .  .Sx \&Sx .
 .Ss \&St  .Ss \&St
 Replace an abbreviation for a standard with the full form.  Replace an abbreviation for a standard with the full form.
 The following standards are recognised:  The following standards are recognised.
   Where multiple lines are given without a blank line in between,
   they all refer to the same standard, and using the first form
   is recommended.
   .Bl -tag -width 1n
   .It C language standards
 .Pp  .Pp
 .Bl -tag -width "-p1003.1g-2000X" -compact  .Bl -tag -width "-p1003.1g-2000" -compact
 .It \-p1003.1-88  .It \-ansiC
 .St -p1003.1-88  .St -ansiC
 .It \-p1003.1-90  .It \-ansiC-89
 .St -p1003.1-90  .St -ansiC-89
 .It \-p1003.1-96  
 .St -p1003.1-96  
 .It \-p1003.1-2001  
 .St -p1003.1-2001  
 .It \-p1003.1-2004  
 .St -p1003.1-2004  
 .It \-p1003.1-2008  
 .St -p1003.1-2008  
 .It \-p1003.1  
 .St -p1003.1  
 .It \-p1003.1b  
 .St -p1003.1b  
 .It \-p1003.1b-93  
 .St -p1003.1b-93  
 .It \-p1003.1c-95  
 .St -p1003.1c-95  
 .It \-p1003.1d-99  
 .St -p1003.1d-99  
 .It \-p1003.1g-2000  
 .St -p1003.1g-2000  
 .It \-p1003.1i-95  
 .St -p1003.1i-95  
 .It \-p1003.1j-2000  
 .St -p1003.1j-2000  
 .It \-p1003.1q-2000  
 .St -p1003.1q-2000  
 .It \-p1003.2  
 .St -p1003.2  
 .It \-p1003.2-92  
 .St -p1003.2-92  
 .It \-p1003.2a-92  
 .St -p1003.2a-92  
 .It \-p1387.2  
 .St -p1387.2  
 .It \-p1387.2-95  
 .St -p1387.2-95  
 .It \-isoC  .It \-isoC
 .St -isoC  .St -isoC
 .It \-isoC-90  .It \-isoC-90
 .St -isoC-90  .St -isoC-90
   .br
   The original C standard.
   .Pp
 .It \-isoC-amd1  .It \-isoC-amd1
 .St -isoC-amd1  .St -isoC-amd1
   .Pp
 .It \-isoC-tcor1  .It \-isoC-tcor1
 .St -isoC-tcor1  .St -isoC-tcor1
   .Pp
 .It \-isoC-tcor2  .It \-isoC-tcor2
 .St -isoC-tcor2  .St -isoC-tcor2
   .Pp
 .It \-isoC-99  .It \-isoC-99
 .St -isoC-99  .St -isoC-99
   .It \-ansiC-99
   .St -ansiC-99
   .br
   The second major version of the C language standard.
   .Pp
 .It \-isoC-2011  .It \-isoC-2011
 .St -isoC-2011  .St -isoC-2011
   .br
   The third major version of the C language standard.
   .El
   .It POSIX.1 before the Single UNIX Specification
   .Pp
   .Bl -tag -width "-p1003.1g-2000" -compact
   .It \-p1003.1-88
   .St -p1003.1-88
   .It \-p1003.1
   .St -p1003.1
   .br
   The original POSIX standard, based on ANSI C.
   .Pp
   .It \-p1003.1-90
   .St -p1003.1-90
 .It \-iso9945-1-90  .It \-iso9945-1-90
 .St -iso9945-1-90  .St -iso9945-1-90
   .br
   The first update of POSIX.1.
   .Pp
   .It \-p1003.1b-93
   .St -p1003.1b-93
   .It \-p1003.1b
   .St -p1003.1b
   .br
   Real-time extensions.
   .Pp
   .It \-p1003.1c-95
   .St -p1003.1c-95
   .br
   POSIX thread interfaces.
   .Pp
   .It \-p1003.1i-95
   .St -p1003.1i-95
   .br
   Technical Corrigendum.
   .Pp
   .It \-p1003.1-96
   .St -p1003.1-96
 .It \-iso9945-1-96  .It \-iso9945-1-96
 .St -iso9945-1-96  .St -iso9945-1-96
 .It \-iso9945-2-93  .br
 .St -iso9945-2-93  Includes POSIX.1-1990, 1b, 1c, and 1i.
 .It \-ansiC  .El
 .St -ansiC  .It X/Open Portability Guide version 4 and related standards
 .It \-ansiC-89  .Pp
 .St -ansiC-89  .Bl -tag -width "-p1003.1g-2000" -compact
 .It \-ansiC-99  
 .St -ansiC-99  
 .It \-ieee754  
 .St -ieee754  
 .It \-iso8802-3  
 .St -iso8802-3  
 .It \-iso8601  
 .St -iso8601  
 .It \-ieee1275-94  
 .St -ieee1275-94  
 .It \-xpg3  .It \-xpg3
 .St -xpg3  .St -xpg3
   .br
   An XPG4 precursor, published in 1989.
   .Pp
   .It \-p1003.2
   .St -p1003.2
   .It \-p1003.2-92
   .St -p1003.2-92
   .It \-iso9945-2-93
   .St -iso9945-2-93
   .br
   An XCU4 precursor.
   .Pp
   .It \-p1003.2a-92
   .St -p1003.2a-92
   .br
   Updates to POSIX.2.
   .Pp
 .It \-xpg4  .It \-xpg4
 .St -xpg4  .St -xpg4
   .br
   Based on POSIX.1 and POSIX.2, published in 1992.
   .El
   .It Single UNIX Specification version 1 and related standards
   .Pp
   .Bl -tag -width "-p1003.1g-2000" -compact
 .It \-xpg4.2  .It \-xpg4.2
 .St -xpg4.2  .St -xpg4.2
   .br
   This standard was published in 1994 and is also called SUSv1.
   It was used as the basis for UNIX 95 certification.
   The following three refer to parts of it.
   .Pp
   .It \-xsh4.2
   .St -xsh4.2
   .Pp
   .It \-xcurses4.2
   .St -xcurses4.2
   .Pp
   .It \-p1003.1g-2000
   .St -p1003.1g-2000
   .br
   Networking APIs, including sockets.
   .Pp
 .It \-xpg4.3  .It \-xpg4.3
 .St -xpg4.3  .St -xpg4.3
   .Pp
   .It \-svid4
   .St -svid4 ,
   .br
   Published in 1995.
   .El
   .It Single UNIX Specification version 2 and related standards
   .Pp
   .Bl -tag -width "-p1003.1g-2000" -compact
   .It \-susv2
   .St -susv2
   This Standard was published in 1997
   and is also called X/Open Portability Guide version 5.
   It was used as the basis for UNIX 98 certification.
   The following refer to parts of it.
   .Pp
 .It \-xbd5  .It \-xbd5
 .St -xbd5  .St -xbd5
 .It \-xcu5  .Pp
 .St -xcu5  
 .It \-xsh4.2  
 .St -xsh4.2  
 .It \-xsh5  .It \-xsh5
 .St -xsh5  .St -xsh5
   .Pp
   .It \-xcu5
   .St -xcu5
   .Pp
 .It \-xns5  .It \-xns5
 .St -xns5  .St -xns5
 .It \-xns5.2  
 .St -xns5.2  
 .It \-xns5.2d2.0  .It \-xns5.2d2.0
 .St -xns5.2d2.0  .St -xns5.2d2.0
 .It \-xcurses4.2  .It \-xns5.2
 .St -xcurses4.2  .St -xns5.2
 .It \-susv2  .Pp
 .St -susv2  .It \-p1387.2
   .St -p1387.2
   .It \-p1387.2-95
   .St -p1387.2-95
   .br
   POSIX software administration.
   .El
   .It Single UNIX Specification version 3 and related standards
   .Pp
   .Bl -tag -width "-p1003.1g-2000X" -compact
   .It \-p1003.1d-99
   .St -p1003.1d-99
   .br
   Additional real-time extensions.
   .Pp
   .It \-p1003.1j-2000
   .St -p1003.1j-2000
   .br
   Advanced real-time extensions.
   .Pp
   .It \-p1003.1q-2000
   .St -p1003.1q-2000
   .br
   Amendment 7: Tracing [C Language].
   .Pp
   .It \-p1003.1-2001
   .St -p1003.1-2001
 .It \-susv3  .It \-susv3
 .St -susv3  .St -susv3
 .It \-svid4  .br
 .St -svid4  This standard is based on C99, SUSv2, POSIX.1-1996, 1d, and 1j.
   It is also called X/Open Portability Guide version 6.
   It is used as the basis for UNIX 03 certification.
   .Pp
   .It \-p1003.1-2004
   .St -p1003.1-2004
   .br
   The second and last Technical Corrigendum.
 .El  .El
   .It Single UNIX Specification version 4
   .Pp
   .Bl -tag -width "-p1003.1g-2000" -compact
   .It \-p1003.1-2008
   .St -p1003.1-2008
   .br
   This standard is also called SUSv4 and
   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
   .Bl -tag -width "-p1003.1g-2000" -compact
   .It \-ieee754
   .St -ieee754
   .br
   Floating-point arithmetic.
   .Pp
   .It \-iso8601
   .St -iso8601
   .br
   Representation of dates and times, published in 1988.
   .Pp
   .It \-iso8802-3
   .St -iso8802-3
   .br
   Ethernet local area networks.
   .Pp
   .It \-ieee1275-94
   .St -ieee1275-94
   .El
   .El
 .Ss \&Sx  .Ss \&Sx
 Reference a section or subsection in the same manual page.  Reference a section or subsection in the same manual page.
 The referenced section or subsection name must be identical to the  The referenced section or subsection name must be identical to the
Line 2998  Manually switching the font using the
Line 3139  Manually switching the font using the
 .Ql \ef  .Ql \ef
 font escape sequences is never required.  font escape sequences is never required.
 .Sh COMPATIBILITY  .Sh COMPATIBILITY
 This section documents compatibility between mandoc and other  This section provides an incomplete list of compatibility issues
 troff implementations, at this time limited to GNU troff  between mandoc and other troff implementations, at this time limited
   to GNU troff
 .Pq Qq groff .  .Pq Qq groff .
 The term  The term
 .Qq historic groff  .Qq historic groff
Line 3108  certain list types.
Line 3250  certain list types.
 can only be called by other macros, but not at the beginning of a line.  can only be called by other macros, but not at the beginning of a line.
 .It  .It
 .Sx \&%C  .Sx \&%C
 is not implemented.  is not implemented (up to and including groff-1.22.2).
 .It  .It
 Historic groff only allows up to eight or nine arguments per macro input  Historic groff only allows up to eight or nine arguments per macro input
 line, depending on the exact situation.  line, depending on the exact situation.
Line 3126  in new groff and mandoc.
Line 3268  in new groff and mandoc.
 .Sq \ef  .Sq \ef
 .Pq font face  .Pq font face
 and  and
 .Sq \ef  .Sq \eF
 .Pq font family face  .Pq font family face
 .Sx Text Decoration  .Sx Text Decoration
 escapes behave irregularly when specified within line-macro scopes.  escapes behave irregularly when specified within line-macro scopes.
Line 3143  The following features are unimplemented in mandoc:
Line 3285  The following features are unimplemented in mandoc:
 .Fl file Ar file .  .Fl file Ar file .
 .It  .It
 .Sx \&Bd  .Sx \&Bd
 .Fl offset Ar center  .Fl offset Cm center
 and  and
 .Fl offset Ar right .  .Fl offset Cm right .
 Groff does not implement centred and flush-right rendering either,  Groff does not implement centred and flush-right rendering either,
 but produces large indentations.  but produces large indentations.
 .It  
 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  
 In quoted literals, groff allows pairwise double-quotes to produce a  
 standalone double-quote in formatted output.  
 This is not supported by mandoc.  
 .El  .El
 .Sh SEE ALSO  .Sh SEE ALSO
 .Xr man 1 ,  .Xr man 1 ,
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Removed from v.1.223  
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