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Diff for /mandoc/mdoc.7 between version 1.229 and 1.243

version 1.229, 2014/06/22 17:07:06 version 1.243, 2014/11/28 18:09:01
Line 388  See
Line 388  See
 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.
 Cross-references should conventionally be ordered first by section, then  Cross-references should conventionally be ordered first by section, then
 alphabetically.  alphabetically (ignoring case).
 .Pp  .Pp
 References to other documentation concerning the topic of the manual page,  References to other documentation concerning the topic of the manual page,
 for example authoritative books or journal articles, may also be  for example authoritative books or journal articles, may also be
Line 468  in the alphabetical
Line 468  in the alphabetical
 .It Sx \&Pf Ta prefix, no following horizontal space (one argument)  .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 \&Ns Ta roman font, no preceding horizontal space (no arguments)
 .It Sx \&Ap Ta apostrophe without surrounding whitespace (no arguments)  .It Sx \&Ap Ta apostrophe without surrounding whitespace (no arguments)
 .It Sx \&Sm Ta switch horizontal spacing mode: Cm on | off  .It Sx \&Sm Ta switch horizontal spacing mode: Op Cm on | off
 .It Sx \&Bk , \&Ek Ta keep block: Fl words  .It Sx \&Bk , \&Ek Ta keep block: Fl words
 .It Sx \&br Ta force output line break in text mode (no arguments)  .It Sx \&br Ta force output line break in text mode (no arguments)
 .It Sx \&sp Ta force vertical space: Op Ar height  .It Sx \&sp Ta force vertical space: Op Ar height
Line 513  in the alphabetical
Line 513  in the alphabetical
 .It Sx \&Cd Ta kernel configuration declaration (>0 arguments)  .It Sx \&Cd Ta kernel configuration declaration (>0 arguments)
 .It Sx \&Ad Ta memory address (>0 arguments)  .It Sx \&Ad Ta memory address (>0 arguments)
 .It Sx \&Ms Ta mathematical symbol (>0 arguments)  .It Sx \&Ms Ta mathematical symbol (>0 arguments)
 .It Sx \&Tn Ta tradename (>0 arguments)  
 .El  .El
 .Ss Physical markup  .Ss Physical markup
 .Bl -column "Brq, Bro, Brc" description  .Bl -column "Brq, Bro, Brc" description
Line 541  in the alphabetical
Line 540  in the alphabetical
 .It Sx \&Ex Fl std Ta standard command exit values: Op Ar utility ...  .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 \&Rv Fl std Ta standard function return values: Op Ar function ...
 .It Sx \&St Ta reference to a standards document (one argument)  .It Sx \&St Ta reference to a standards document (one argument)
 .It Sx \&Ux Ta Ux  
 .It Sx \&At Ta At  .It Sx \&At Ta At
 .It Sx \&Bx Ta Bx  .It Sx \&Bx Ta Bx
 .It Sx \&Bsx Ta Bsx  .It Sx \&Bsx Ta Bsx
Line 752  See also
Line 750  See also
 .Sx \&Dx ,  .Sx \&Dx ,
 .Sx \&Fx ,  .Sx \&Fx ,
 .Sx \&Nx ,  .Sx \&Nx ,
 .Sx \&Ox ,  
 and  and
 .Sx \&Ux .  .Sx \&Ox .
 .Ss \&Bc  .Ss \&Bc
 Close a  Close a
 .Sx \&Bo  .Sx \&Bo
Line 940  The
Line 937  The
 .Fl width  .Fl width
 and  and
 .Fl offset  .Fl offset
 arguments accept scaling widths as described in  arguments accept macro names as described for
 .Xr roff 7  .Sx \&Bd
   .Fl offset ,
   scaling widths as described in
   .Xr roff 7 ,
 or use the length of the given string.  or use the length of the given string.
 The  The
 .Fl offset  .Fl offset
Line 1118  See also
Line 1118  See also
 .Sx \&Dx ,  .Sx \&Dx ,
 .Sx \&Fx ,  .Sx \&Fx ,
 .Sx \&Nx ,  .Sx \&Nx ,
 .Sx \&Ox ,  
 and  and
 .Sx \&Ux .  .Sx \&Ox .
 .Ss \&Bt  .Ss \&Bt
   Supported only for compatibility, do not use this in new manuals.
 Prints  Prints
 .Dq is currently in beta test.  .Dq is currently in beta test.
 .Ss \&Bx  .Ss \&Bx
Line 1141  See also
Line 1141  See also
 .Sx \&Dx ,  .Sx \&Dx ,
 .Sx \&Fx ,  .Sx \&Fx ,
 .Sx \&Nx ,  .Sx \&Nx ,
 .Sx \&Ox ,  
 and  and
 .Sx \&Ux .  .Sx \&Ox .
 .Ss \&Cd  .Ss \&Cd
 Kernel configuration declaration.  Kernel configuration declaration.
 This denotes strings accepted by  This denotes strings accepted by
Line 1186  See also
Line 1185  See also
 and  and
 .Sx \&Dl .  .Sx \&Dl .
 .Ss \&Db  .Ss \&Db
 Switch debugging mode.  This macro is obsolete.
 Its syntax is as follows:  No replacement is needed.
 .Pp  It is ignored by
 .D1 Pf \. Sx \&Db Cm on | off  .Xr mandoc 1
 .Pp  and groff including its arguments.
 This macro is ignored by  It was formerly used to toggle a debugging mode.
 .Xr mandoc 1 .  
 .Ss \&Dc  .Ss \&Dc
 Close a  Close a
 .Sx \&Do  .Sx \&Do
 block.  block.
 Does not have any tail arguments.  Does not have any tail arguments.
 .Ss \&Dd  .Ss \&Dd
 Document date.  Document date for display in the page footer.
 This is the mandatory first macro of any  This is the mandatory first macro of any
 .Nm  .Nm
 manual.  manual.
Line 1228  the special string
Line 1226  the special string
 .Dq $\&Mdocdate$  .Dq $\&Mdocdate$
 can be given as an argument.  can be given as an argument.
 .It  .It
 A few alternative date formats are accepted as well  The traditional, purely numeric
 and converted to the standard form.  .Xr man 7
   format
   .Ar year Ns \(en Ns Ar month Ns \(en Ns Ar day
   is accepted, too.
 .It  .It
 If a date string cannot be parsed, it is used verbatim.  If a date string cannot be parsed, it is used verbatim.
 .It  .It
Line 1246  See also
Line 1247  See also
 and  and
 .Sx \&Os .  .Sx \&Os .
 .Ss \&Dl  .Ss \&Dl
 One-line intended display.  One-line indented display.
 This is formatted as literal text and is useful for commands and  This is formatted as literal text and is useful for commands and
 invocations.  invocations.
 It is followed by a newline.  It is followed by a newline.
Line 1289  See also
Line 1290  See also
 and  and
 .Sx \&Do .  .Sx \&Do .
 .Ss \&Dt  .Ss \&Dt
 Document title.  Document title for display in the page header.
 This is the mandatory second macro of any  This is the mandatory second macro of any
 .Nm  .Nm
 file.  file.
 Its syntax is as follows:  Its syntax is as follows:
 .Bd -ragged -offset indent  .Bd -ragged -offset indent
 .Pf \. Sx \&Dt  .Pf \. Sx \&Dt
 .Oo  .Ar TITLE
 .Ar title  
 .Oo  
 .Ar section  .Ar section
 .Op Ar volume  .Op Ar volume | arch
 .Op Ar arch  
 .Oc  
 .Oc  
 .Ed  .Ed
 .Pp  .Pp
 Its arguments are as follows:  Its arguments are as follows:
 .Bl -tag -width Ds -offset Ds  .Bl -tag -width section -offset 2n
 .It Ar title  .It Ar TITLE
 The document's title (name), defaulting to  The document's title (name), defaulting to
 .Dq UNKNOWN  .Dq UNTITLED
 if unspecified.  if unspecified.
 It should be capitalised.  To achieve a uniform appearance of page header lines,
   it should by convention be all caps.
 .It Ar section  .It Ar section
 The manual section.  The manual section.
 This may be one of  This may be one of
Line 1350  or
Line 1347  or
 .Cm 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
 .Cm 1  the empty string 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 .
Line 1389  where relevant, for example
Line 1385  where relevant, for example
 .Cm i386 ,  .Cm i386 ,
 or  or
 .Cm sparc64 .  .Cm sparc64 .
 The list of supported architectures varies by operating system.  The list of valid architectures varies by operating system.
 For the full list of all architectures recognized by  
 .Xr mandoc 1 ,  
 see the file  
 .Pa arch.in  
 in the source distribution.  
 .El  .El
 .Pp  .Pp
 Examples:  Examples:
Line 1441  See also
Line 1432  See also
 .Sx \&Bx ,  .Sx \&Bx ,
 .Sx \&Fx ,  .Sx \&Fx ,
 .Sx \&Nx ,  .Sx \&Nx ,
 .Sx \&Ox ,  
 and  and
 .Sx \&Ux .  .Sx \&Ox .
 .Ss \&Ec  .Ss \&Ec
 Close a scope started by  Close a scope started by
 .Sx \&Eo .  .Sx \&Eo .
Line 1474  See also
Line 1464  See also
 and  and
 .Sx \&It .  .Sx \&It .
 .Ss \&Em  .Ss \&Em
 Denotes text that should be  Request an italic font.
 .Em emphasised .  If the output device does not provide that, underline.
 Note that this is a presentation term and should not be used for  
 stylistically decorating technical terms.  
 Depending on the output device, this is usually represented  
 using an italic font or underlined characters.  
 .Pp  .Pp
   This is most often used for stress emphasis (not to be confused with
   importance, see
   .Sx \&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,
   .Sx \&Sy
   and
   .Sx \&Ar
   are preferred, respectively.
   .Pp
 Examples:  Examples:
 .Dl \&.Em Warnings!  .Bd -literal -compact -offset indent
 .Dl \&.Em Remarks :  Selected lines are those
   \&.Em not
   matching any of the specified patterns.
   Some of the functions use a
   \&.Em hold space
   to save the pattern space for subsequent retrieval.
   .Ed
 .Pp  .Pp
 See also  See also
 .Sx \&Bf ,  .Sx \&Bf ,
Line 1492  See also
Line 1495  See also
 and  and
 .Sx \&Sy .  .Sx \&Sy .
 .Ss \&En  .Ss \&En
 This macro is obsolete and not implemented in  This macro is obsolete.
 .Xr mandoc 1 .  Use
   .Sx \&Eo
   or any of the other enclosure macros.
   .Pp
   It encloses its argument in the delimiters specified by the last
   .Sx \&Es
   macro.
 .Ss \&Eo  .Ss \&Eo
 An arbitrary enclosure.  An arbitrary enclosure.
 Its syntax is as follows:  Its syntax is as follows:
Line 1519  See also
Line 1528  See also
 .Sx \&Dv  .Sx \&Dv
 for general constants.  for general constants.
 .Ss \&Es  .Ss \&Es
 This macro is obsolete and not implemented.  This macro is obsolete.
   Use
   .Sx \&Eo
   or any of the other enclosure macros.
   .Pp
   It takes two arguments, defining the delimiters to be used by subsequent
   .Sx \&En
   macros.
 .Ss \&Ev  .Ss \&Ev
 Environmental variables such as those specified in  Environmental variables such as those specified in
 .Xr environ 7 .  .Xr environ 7 .
Line 1551  arguments are treated as separate utilities.
Line 1567  arguments are treated as separate utilities.
 See also  See also
 .Sx \&Rv .  .Sx \&Rv .
 .Ss \&Fa  .Ss \&Fa
 Function argument.  Function argument or parameter.
 Its syntax is as follows:  Its syntax is as follows:
 .Bd -ragged -offset indent  .Bd -ragged -offset indent
 .Pf \. Sx \&Fa  .Pf \. Sx \&Fa
 .Op Cm argtype  .Qo
 .Cm argname  .Op Ar argtype
   .Op Ar argname
   .Qc Ar \&...
 .Ed  .Ed
 .Pp  .Pp
 This may be invoked for names with or without the corresponding type.  Each argument may be a name and a type (recommended for the
 It is also used to specify the field name of a structure.  .Em SYNOPSIS
   section), a name alone (for function invocations),
   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
   .Sx \&Fa
   macro.
   .Pp
   This macro is also used to specify the field name of a structure.
   .Pp
 Most often, the  Most often, the
 .Sx \&Fa  .Sx \&Fa
 macro is used in the  macro is used in the
 .Em SYNOPSIS  .Em SYNOPSIS
 within  within
 .Sx \&Fo  .Sx \&Fo
 section when documenting multi-line function prototypes.  blocks when documenting multi-line function prototypes.
 If invoked with multiple arguments, the arguments are separated by a  If invoked with multiple arguments, the arguments are separated by a
 comma.  comma.
 Furthermore, if the following macro is another  Furthermore, if the following macro is another
Line 1577  the last argument will also have a trailing comma.
Line 1605  the last argument will also have a trailing comma.
 Examples:  Examples:
 .Dl \&.Fa \(dqconst char *p\(dq  .Dl \&.Fa \(dqconst char *p\(dq
 .Dl \&.Fa \(dqint a\(dq \(dqint b\(dq \(dqint c\(dq  .Dl \&.Fa \(dqint a\(dq \(dqint b\(dq \(dqint c\(dq
 .Dl \&.Fa foo  .Dl \&.Fa \(dqchar *\(dq size_t
 .Pp  .Pp
 See also  See also
 .Sx \&Fo .  .Sx \&Fo .
Line 1680  Invocations usually occur in the following context:
Line 1708  Invocations usually occur in the following context:
 .br  .br
 .Pf \. Sx \&Fo Ar funcname  .Pf \. Sx \&Fo Ar funcname
 .br  .br
 .Pf \. Sx \&Fa Oo Ar argtype Oc Ar argname  .Pf \. Sx \&Fa Qq Ar argtype Ar argname
 .br  .br
 \&.\.\.  \&.\.\.
 .br  .br
Line 1699  See also
Line 1727  See also
 and  and
 .Sx \&Ft .  .Sx \&Ft .
 .Ss \&Fr  .Ss \&Fr
 This macro is obsolete and not implemented in  This macro is obsolete.
 .Xr mandoc 1 .  No replacement markup is needed.
 .Pp  .Pp
 It was used to show function return values.  It was used to show numerical function return values in an italic font.
 The syntax was:  
 .Pp  
 .Dl Pf . Sx \&Fr Ar value  
 .Ss \&Ft  .Ss \&Ft
 A function type.  A function type.
 Its syntax is as follows:  Its syntax is as follows:
Line 1744  See also
Line 1769  See also
 .Sx \&Bx ,  .Sx \&Bx ,
 .Sx \&Dx ,  .Sx \&Dx ,
 .Sx \&Nx ,  .Sx \&Nx ,
 .Sx \&Ox ,  
 and  and
 .Sx \&Ux .  .Sx \&Ox .
 .Ss \&Hf  .Ss \&Hf
 This macro is not implemented in  This macro is not implemented in
 .Xr mandoc 1 .  .Xr mandoc 1 .
Line 2064  See also
Line 2088  See also
 .Sx \&Bx ,  .Sx \&Bx ,
 .Sx \&Dx ,  .Sx \&Dx ,
 .Sx \&Fx ,  .Sx \&Fx ,
 .Sx \&Ox ,  
 and  and
 .Sx \&Ux .  .Sx \&Ox .
 .Ss \&Oc  .Ss \&Oc
 Close multi-line  Close multi-line
 .Sx \&Oo  .Sx \&Oo
Line 2095  Examples:
Line 2118  Examples:
 See also  See also
 .Sx \&Oo .  .Sx \&Oo .
 .Ss \&Os  .Ss \&Os
 Document operating system version.  Operating system version for display in the page footer.
 This is the mandatory third macro of  This is the mandatory third macro of
 any  any
 .Nm  .Nm
Line 2120  See also
Line 2143  See also
 and  and
 .Sx \&Dt .  .Sx \&Dt .
 .Ss \&Ot  .Ss \&Ot
 This macro is obsolete and not implemented in  This macro is obsolete.
 .Xr mandoc 1 .  Use
   .Sx \&Ft
   instead; with
   .Xr mandoc 1 ,
   both have the same effect.
 .Pp  .Pp
 Historical  Historical
 .Nm  .Nm
Line 2143  See also
Line 2170  See also
 .Sx \&Bx ,  .Sx \&Bx ,
 .Sx \&Dx ,  .Sx \&Dx ,
 .Sx \&Fx ,  .Sx \&Fx ,
 .Sx \&Nx ,  
 and  and
 .Sx \&Ux .  .Sx \&Nx .
 .Ss \&Pa  .Ss \&Pa
 An absolute or relative file system path, or a file or directory name.  An absolute or relative file system path, or a file or directory name.
 If an argument is not provided, the character  If an argument is not provided, the character
Line 2319  and
Line 2345  and
 Switches the spacing mode for output generated from macros.  Switches the spacing mode for output generated from macros.
 Its syntax is as follows:  Its syntax is as follows:
 .Pp  .Pp
 .D1 Pf \. Sx \&Sm Cm on | off  .D1 Pf \. Sx \&Sm Op Cm on | off
 .Pp  .Pp
 By default, spacing is  By default, spacing is
 .Cm on .  .Cm on .
Line 2328  When switched
Line 2354  When switched
 no white space is inserted between macro arguments and between the  no white space is inserted between macro arguments and between the
 output generated from adjacent macros, but text lines  output generated from adjacent macros, but text lines
 still get normal spacing between words and sentences.  still get normal spacing between words and sentences.
   .Pp
   When called without an argument, the
   .Sx \&Sm
   macro toggles the spacing mode.
   Using this is not recommended because it makes the code harder to read.
 .Ss \&So  .Ss \&So
 Multi-line version of  Multi-line version of
 .Sx \&Sq .  .Sx \&Sq .
Line 2476  Based on POSIX.1 and POSIX.2, published in 1992.
Line 2507  Based on POSIX.1 and POSIX.2, published in 1992.
 .It Single UNIX Specification version 1 and related standards  .It Single UNIX Specification version 1 and related standards
 .Pp  .Pp
 .Bl -tag -width "-p1003.1g-2000" -compact  .Bl -tag -width "-p1003.1g-2000" -compact
   .It \-susv1
   .St -susv1
 .It \-xpg4.2  .It \-xpg4.2
 .St -xpg4.2  .St -xpg4.2
 .br  .br
 This standard was published in 1994 and is also called SUSv1.  This standard was published in 1994.
 It was used as the basis for UNIX 95 certification.  It was used as the basis for UNIX 95 certification.
 The following three refer to parts of it.  The following three refer to parts of it.
 .Pp  .Pp
Line 2523  The following refer to parts of it.
Line 2556  The following refer to parts of it.
 .Pp  .Pp
 .It \-xns5  .It \-xns5
 .St -xns5  .St -xns5
 .It \-xns5.2d2.0  
 .St -xns5.2d2.0  
 .It \-xns5.2  .It \-xns5.2
 .St -xns5.2  .St -xns5.2
 .Pp  
 .It \-p1387.2  
 .St -p1387.2  
 .It \-p1387.2-95  
 .St -p1387.2-95  
 .br  
 POSIX software administration.  
 .El  .El
 .It Single UNIX Specification version 3 and related standards  .It Single UNIX Specification version 3 and related standards
 .Pp  .Pp
Line 2543  POSIX software administration.
Line 2567  POSIX software administration.
 .br  .br
 Additional real-time extensions.  Additional real-time extensions.
 .Pp  .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  .It \-p1003.1-2001
 .St -p1003.1-2001  .St -p1003.1-2001
 .It \-susv3  .It \-susv3
Line 2572  The second and last Technical Corrigendum.
Line 2586  The second and last Technical Corrigendum.
 .Bl -tag -width "-p1003.1g-2000" -compact  .Bl -tag -width "-p1003.1g-2000" -compact
 .It \-p1003.1-2008  .It \-p1003.1-2008
 .St -p1003.1-2008  .St -p1003.1-2008
   .It \-susv4
   .St -susv4
 .br  .br
 This standard is also called SUSv4 and  This standard is also called
 X/Open Portability Guide version 7.  X/Open Portability Guide version 7.
 .Pp  .Pp
 .It \-p1003.1-2013  .It \-p1003.1-2013
Line 2616  See also
Line 2632  See also
 and  and
 .Sx \&Ss .  .Sx \&Ss .
 .Ss \&Sy  .Ss \&Sy
 Format enclosed arguments in symbolic  Request a boldface font.
 .Pq Dq boldface .  
 Note that this is a presentation term and should not be used for  
 stylistically decorating technical terms.  
 .Pp  .Pp
   This is most often used to indicate importance or seriousness (not to be
   confused with stress emphasis, see
   .Sx \&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
   Examples:
   .Bd -literal -compact -offset indent
   \&.Sy Warning :
   If
   \&.Sy s
   appears in the owner permissions, set-user-ID mode is set.
   This utility replaces the former
   \&.Sy dumpdir
   program.
   .Ed
   .Pp
 See also  See also
 .Sx \&Bf ,  .Sx \&Bf ,
 .Sx \&Em ,  .Sx \&Em ,
Line 2633  Table cell separator in
Line 2663  Table cell separator in
 lists; can only be used below  lists; can only be used below
 .Sx \&It .  .Sx \&It .
 .Ss \&Tn  .Ss \&Tn
 Format a tradename.  Supported only for compatibility, do not use this in new manuals.
 .Pp  Even though the macro name
 Since this macro is often implemented to use a small caps font,  .Pq Dq tradename
 it has historically been used for acronyms (like ASCII) as well.  suggests a semantic function, historic usage is inconsistent, mostly
 Such usage is not recommended because it would use the same macro  using it as a presentation-level macro to request a small caps font.
 sometimes for semantical annotation, sometimes for physical formatting.  
 .Pp  
 Examples:  
 .Dl \&.Tn IBM  
 .Ss \&Ud  .Ss \&Ud
   Supported only for compatibility, do not use this in new manuals.
 Prints out  Prints out
 .Dq currently under development.  .Dq currently under development.
 .Ss \&Ux  .Ss \&Ux
 Format the  Supported only for compatibility, do not use this in new manuals.
 .Ux  Prints out
 name.  .Dq Ux .
 Accepts no argument.  
 .Pp  
 Examples:  
 .Dl \&.Ux  
 .Pp  
 See also  
 .Sx \&At ,  
 .Sx \&Bsx ,  
 .Sx \&Bx ,  
 .Sx \&Dx ,  
 .Sx \&Fx ,  
 .Sx \&Nx ,  
 and  
 .Sx \&Ox .  
 .Ss \&Va  .Ss \&Va
 A variable name.  A variable name.
 .Pp  .Pp
 Examples:  Examples:
 .Dl \&.Va foo  .Dl \&.Va foo
 .Dl \&.Va const char *bar ;  .Dl \&.Va const char *bar ;
   .Pp
   For function arguments and parameters, use
   .Sx \&Fa
   instead.
   For declarations of global variables in the
   .Em SYNOPSIS
   section, use
   .Sx \&Vt .
 .Ss \&Vt  .Ss \&Vt
 A variable type.  A variable type.
   .Pp
 This is also used for indicating global variables in the  This is also used for indicating global variables in the
 .Em SYNOPSIS  .Em SYNOPSIS
 section, in which case a variable name is also specified.  section, in which case a variable name is also specified.
Line 2685  In the former case, this macro starts a new output lin
Line 2707  In the former case, this macro starts a new output lin
 and a blank line is inserted in front if there is a preceding  and a blank line is inserted in front if there is a preceding
 function definition or include directive.  function definition or include directive.
 .Pp  .Pp
 Note that this should not be confused with  
 .Sx \&Ft ,  
 which is used for function return types.  
 .Pp  
 Examples:  Examples:
 .Dl \&.Vt unsigned char  .Dl \&.Vt unsigned char
 .Dl \&.Vt extern const char * const sys_signame[] \&;  .Dl \&.Vt extern const char * const sys_signame[] \&;
 .Pp  .Pp
   For parameters in function prototypes, use
   .Sx \&Fa
   instead, for function return types
   .Sx \&Ft ,
   and for variable names outside the
   .Em SYNOPSIS
   section
   .Sx \&Va ,
   even when including a type with the name.
 See also  See also
 .Sx MANUAL STRUCTURE  .Sx MANUAL STRUCTURE .
 and  
 .Sx \&Va .  
 .Ss \&Xc  .Ss \&Xc
 Close a scope opened by  Close a scope opened by
 .Sx \&Xo .  .Sx \&Xo .
Line 2914  end of the line.
Line 2939  end of the line.
 .It Sx \&D1  Ta    \&No     Ta    \&Yes  .It Sx \&D1  Ta    \&No     Ta    \&Yes
 .It Sx \&Dl  Ta    \&No     Ta    Yes  .It Sx \&Dl  Ta    \&No     Ta    Yes
 .It Sx \&Dq  Ta    Yes      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 \&Op  Ta    Yes      Ta    Yes
 .It Sx \&Pq  Ta    Yes      Ta    Yes  .It Sx \&Pq  Ta    Yes      Ta    Yes
 .It Sx \&Ql  Ta    Yes      Ta    Yes  .It Sx \&Ql  Ta    Yes      Ta    Yes
Line 2991  then the macro accepts an arbitrary number of argument
Line 3017  then the macro accepts an arbitrary number of argument
 .It Sx \&Dv  Ta    Yes      Ta    Yes      Ta    >0  .It Sx \&Dv  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Dx  Ta    Yes      Ta    Yes      Ta    n  .It Sx \&Dx  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Em  Ta    Yes      Ta    Yes      Ta    >0  .It Sx \&Em  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&En  Ta    \&No     Ta    \&No     Ta    0  
 .It Sx \&Er  Ta    Yes      Ta    Yes      Ta    >0  .It Sx \&Er  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Es  Ta    \&No     Ta    \&No     Ta    0  .It Sx \&Es  Ta    Yes      Ta    Yes      Ta    2
 .It Sx \&Ev  Ta    Yes      Ta    Yes      Ta    >0  .It Sx \&Ev  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Ex  Ta    \&No     Ta    \&No     Ta    n  .It Sx \&Ex  Ta    \&No     Ta    \&No     Ta    n
 .It Sx \&Fa  Ta    Yes      Ta    Yes      Ta    >0  .It Sx \&Fa  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Fd  Ta    \&No     Ta    \&No     Ta    >0  .It Sx \&Fd  Ta    \&No     Ta    \&No     Ta    >0
 .It Sx \&Fl  Ta    Yes      Ta    Yes      Ta    n  .It Sx \&Fl  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Fn  Ta    Yes      Ta    Yes      Ta    >0  .It Sx \&Fn  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Fr  Ta    \&No     Ta    \&No     Ta    n  .It Sx \&Fr  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Ft  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 \&Fx  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Hf  Ta    \&No     Ta    \&No     Ta    n  .It Sx \&Hf  Ta    \&No     Ta    \&No     Ta    n
Line 3017  then the macro accepts an arbitrary number of argument
Line 3042  then the macro accepts an arbitrary number of argument
 .It Sx \&Ns  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 \&Nx  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Os  Ta    \&No     Ta    \&No     Ta    n  .It Sx \&Os  Ta    \&No     Ta    \&No     Ta    n
 .It Sx \&Ot  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 \&Ox  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Pa  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 \&Pf  Ta    Yes      Ta    Yes      Ta    1
 .It Sx \&Pp  Ta    \&No     Ta    \&No     Ta    0  .It Sx \&Pp  Ta    \&No     Ta    \&No     Ta    0
 .It Sx \&Rv  Ta    \&No     Ta    \&No     Ta    n  .It Sx \&Rv  Ta    \&No     Ta    \&No     Ta    n
 .It Sx \&Sm  Ta    \&No     Ta    \&No     Ta    1  .It Sx \&Sm  Ta    \&No     Ta    \&No     Ta    <2
 .It Sx \&St  Ta    \&No     Ta    Yes      Ta    1  .It Sx \&St  Ta    \&No     Ta    Yes      Ta    1
 .It Sx \&Sx  Ta    Yes      Ta    Yes      Ta    >0  .It Sx \&Sx  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Sy  Ta    Yes      Ta    Yes      Ta    >0  .It Sx \&Sy  Ta    Yes      Ta    Yes      Ta    >0

Legend:
Removed from v.1.229  
changed lines
  Added in v.1.243

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