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Diff for /mandoc/mandoc.1 between version 1.58 and 1.77

version 1.58, 2010/04/12 19:27:22 version 1.77, 2010/08/20 01:02:07
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 .\"     $Id$  .\"     $Id$
 .\"  .\"
 .\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>  .\" Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
 .\"  .\"
 .\" 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 MANDOC 1  .Dt MANDOC 1
 .Os  .Os
 .  
 .  
 .Sh NAME  .Sh NAME
 .Nm mandoc  .Nm mandoc
 .Nd format and display UNIX manuals  .Nd format and display UNIX manuals
 .  
 .  
 .Sh SYNOPSIS  .Sh SYNOPSIS
 .Nm mandoc  .Nm mandoc
 .Op Fl V  .Op Fl V
 .Op Fl f Ns Ar option  
 .Op Fl m Ns Ar format  .Op Fl m Ns Ar format
 .Op Fl O Ns Ar option  .Op Fl O Ns Ar option
 .Op Fl T Ns Ar output  .Op Fl T Ns Ar output
 .Op Fl W Ns Ar err  .Op Fl W Ns Ar level
 .Op Ar file...  .Op Ar file...
 .  
 .  
 .Sh DESCRIPTION  .Sh DESCRIPTION
 The  The
 .Nm  .Nm
Line 42  utility formats
Line 35  utility formats
 .Ux  .Ux
 manual pages for display.  manual pages for display.
 The arguments are as follows:  The arguments are as follows:
 .  
 .Bl -tag -width Ds  .Bl -tag -width Ds
 .It Fl f Ns Ar option  
 Comma-separated compiler options.  
 See  
 .Sx Compiler Options  
 for details.  
 .  
 .It Fl m Ns Ar format  .It Fl m Ns Ar format
 Input format.  Input format.
 See  See
Line 57  See
Line 43  See
 for available formats.  for available formats.
 Defaults to  Defaults to
 .Fl m Ns Cm andoc .  .Fl m Ns Cm andoc .
 .  
 .It Fl O Ns Ar option  .It Fl O Ns Ar option
 Comma-separated output options.  Comma-separated output options.
 See  
 .Sx Output Options  
 for details.  
 .  
 .It Fl T Ns Ar output  .It Fl T Ns Ar output
 Output format.  Output format.
 See  See
Line 71  See
Line 52  See
 for available formats.  for available formats.
 Defaults to  Defaults to
 .Fl T Ns Cm ascii .  .Fl T Ns Cm ascii .
 .  
 .It Fl V  .It Fl V
 Print version and exit.  Print version and exit.
 .  .It Fl W Ns Ar level
 .It Fl W Ns Ar err  Specify the minimum message
 Comma-separated warning options.  .Ar level
 Use  to be reported on the standard error output and to affect the exit status.
   The
   .Ar level
   can be
   .Cm warning ,
   .Cm error ,
   or
   .Cm fatal .
   The default is
   .Fl W Ns Cm fatal ;
 .Fl W Ns Cm all  .Fl W Ns Cm all
 to print warnings,  is an alias for
 .Fl W Ns Cm error  .Fl W Ns Cm warning .
 for warnings to be considered errors and cause utility  See
 termination.  .Sx EXIT STATUS
 Multiple  and
 .Fl W  .Sx DIAGNOSTICS
 arguments may be comma-separated, such as  for details.
 .Fl W Ns Cm error , Ns Cm all .  .Pp
 .  The special option
   .Fl W Ns Cm stop
   tells
   .Nm
   to exit after parsing a file that causes warnings or errors of at least
   the requested level.
   No formatted output will be produced from that file.
   If both a
   .Ar level
   and
   .Cm stop
   are requested, they can be joined with a comma, for example
   .Fl W Ns Cm error , Ns Cm stop .
 .It Ar file  .It Ar file
 Read input from zero or more files.  Read input from zero or more files.
 If unspecified, reads from stdin.  If unspecified, reads from stdin.
Line 95  If multiple files are specified,
Line 96  If multiple files are specified,
 .Nm  .Nm
 will halt with the first failed parse.  will halt with the first failed parse.
 .El  .El
 .  
 .Pp  .Pp
 By default,  By default,
 .Nm  .Nm
Line 108  text from stdin, implying
Line 108  text from stdin, implying
 and produces  and produces
 .Fl T Ns Cm ascii  .Fl T Ns Cm ascii
 output.  output.
 .  
 .Pp  
 .Ex -std mandoc  
 .  
 .  
 .Ss Input Formats  .Ss Input Formats
 The  The
 .Nm  .Nm
Line 132  format is
Line 127  format is
 recommended;  recommended;
 .Xr man 7  .Xr man 7
 should only be used for legacy manuals.  should only be used for legacy manuals.
 .  
 .Pp  .Pp
 A third option,  A third option,
 .Fl m Ns Cm andoc ,  .Fl m Ns Cm andoc ,
Line 146  the
Line 140  the
 parser is used; otherwise, the  parser is used; otherwise, the
 .Xr man 7  .Xr man 7
 parser is used.  parser is used.
 .  
 .Pp  .Pp
 If multiple  If multiple
 files are specified with  files are specified with
Line 158  specified and
Line 151  specified and
 or  or
 .Fl m Ns Cm an  .Fl m Ns Cm an
 is specified, then this format is used exclusively.  is specified, then this format is used exclusively.
 .  
 .  
 .Ss Output Formats  .Ss Output Formats
 The  The
 .Nm  .Nm
 utility accepts the following  utility accepts the following
 .Fl T  .Fl T
 arguments (see  arguments, which correspond to output modes:
 .Sx OUTPUT ) :  
 .  
 .Bl -tag -width Ds  .Bl -tag -width Ds
 .It Fl T Ns Cm ascii  .It Fl T Ns Cm ascii
 Produce 7-bit ASCII output, backspace-encoded for bold and underline  Produce 7-bit ASCII output, backspace-encoded for bold and underline
Line 175  styles.
Line 164  styles.
 This is the default.  This is the default.
 See  See
 .Sx ASCII Output .  .Sx ASCII Output .
 .  
 .It Fl T Ns Cm html  .It Fl T Ns Cm html
 Produce strict HTML-4.01 output, with a sane default style.  Produce strict HTML-4.01 output, with a sane default style.
 See  See
 .Sx HTML Output .  .Sx HTML Output .
 .  
 .It Fl T Ns Cm lint  .It Fl T Ns Cm lint
 Parse only: produce no output.  Parse only: produce no output.
 Implies  Implies
 .Fl W Ns Cm all  .Fl W Ns Cm warning .
 and  .It Fl T Ns Cm pdf
 .Fl f Ns Cm strict .  Produce PDF output.
 .  See
   .Sx PDF Output .
   .It Fl T Ns Cm ps
   Produce PostScript output.
   See
   .Sx PostScript Output .
 .It Fl T Ns Cm tree  .It Fl T Ns Cm tree
 Produce an indented parse tree.  Produce an indented parse tree.
 .  
 .It Fl T Ns Cm xhtml  .It Fl T Ns Cm xhtml
 Produce strict XHTML-1.0 output, with a sane default style.  Produce strict XHTML-1.0 output, with a sane default style.
 See  See
 .Sx XHTML Output .  .Sx XHTML Output .
 .El  .El
 .  
 .Pp  .Pp
 If multiple input files are specified, these will be processed by the  If multiple input files are specified, these will be processed by the
 corresponding filter in-order.  corresponding filter in-order.
 .  
 .  
 .Ss Compiler Options  
 Default compiler behaviour may be overridden with the  
 .Fl f  
 flag.  
 .  
 .Bl -tag -width Ds  
 .It Fl f Ns Cm ign-errors  
 When parsing multiple files, don't halt when one errors out.  
 Useful with  
 .Fl T Ns Cm lint  
 over a large set of manuals passed on the command line.  
 .  
 .It Fl f Ns Cm ign-escape  
 Ignore invalid escape sequences.  
 This is the default, but the option can be used to override an earlier  
 .Fl f Ns Cm strict .  
 .  
 .It Fl f Ns Cm ign-scope  
 When rewinding the scope of a block macro, forces the compiler to ignore  
 scope violations.  
 This can seriously mangle the resulting tree.  
 .Pq mdoc only  
 .  
 .It Fl f Ns Cm no-ign-chars  
 Do not ignore disallowed characters.  
 .  
 .It Fl f Ns Cm no-ign-escape  
 Do not ignore invalid escape sequences.  
 .  
 .It Fl f Ns Cm no-ign-macro  
 Do not ignore unknown macros at the start of input lines.  
 .  
 .It Fl f Ns Cm strict  
 Implies  
 .Fl f Ns Cm no-ign-escape ,  
 .Fl f Ns Cm no-ign-macro ,  
 and  
 .Fl f Ns Cm no-ign-chars .  
 .El  
 .  
 .  
 .Ss Output Options  
 For the time being, only  
 .Fl T Ns Ar html  
 and  
 .Fl T Ns Ar xhtml  
 accept output options:  
 .Bl -tag -width Ds  
 .It Fl O Ns Cm includes Ns = Ns Ar fmt  
 The string  
 .Ar fmt ,  
 for example,  
 .Ar ../src/%I.html ,  
 is used as a template for linked header files (usually via the  
 .Sq \&In  
 macro).  
 Instances of  
 .Sq \&%I  
 are replaced with the include filename.  
 The default is not to present a  
 hyperlink.  
 .It Fl O Ns Cm man Ns = Ns Ar fmt  
 The string  
 .Ar fmt ,  
 for example,  
 .Ar ../html%S/%N.%S.html ,  
 is used as a template for linked manuals (usually via the  
 .Sq \&Xr  
 macro).  
 Instances of  
 .Sq \&%N  
 and  
 .Sq %S  
 are replaced with the linked manual's name and section, respectively.  
 If no section is included, section 1 is assumed.  
 The default is not to  
 present a hyperlink.  
 .It Fl O Ns Cm style Ns = Ns Ar style.css  
 The file  
 .Ar style.css  
 is used for an external style-sheet.  
 This must be a valid absolute or  
 relative URI.  
 .El  
 .  
 .  
 .Sh OUTPUT  
 This section documents output details of  
 .Nm .  
 In general, output conforms to the traditional manual style of a header,  
 a body composed of sections and sub-sections, and a footer.  
 .Pp  
 The text style of output characters (non-macro characters, punctuation,  
 and white-space) is dictated by context.  
 .Pp  
 White-space is generally stripped from input.  
 This can be changed with  
 character escapes (specified in  
 .Xr mandoc_char 7 )  
 or literal modes (specified in  
 .Xr mdoc 7  
 and  
 .Xr man 7 ) .  
 .Pp  
 If non-macro punctuation is set apart from words, such as in the phrase  
 .Dq to be \&, or not to be ,  
 it's processed by  
 .Nm ,  
 regardless of output format, according to the following rules:  opening  
 punctuation  
 .Po  
 .Sq \&( ,  
 .Sq \&[ ,  
 and  
 .Sq \&{  
 .Pc  
 is not followed by a space; closing punctuation  
 .Po  
 .Sq \&. ,  
 .Sq \&, ,  
 .Sq \&; ,  
 .Sq \&: ,  
 .Sq \&? ,  
 .Sq \&! ,  
 .Sq \&) ,  
 .Sq \&]  
 and  
 .Sq \&}  
 .Pc  
 is not preceded by white-space.  
 .  
 .Pp  
 If the input is  
 .Xr mdoc 7 ,  
 however, these rules are also applied to macro arguments when appropriate.  
 .  
 .  
 .Ss ASCII Output  .Ss ASCII Output
 Output produced by  Output produced by
 .Fl T Ns Cm ascii ,  .Fl T Ns Cm ascii ,
Line 362  are rendered best-effort in an ASCII equivalent.
Line 213  are rendered best-effort in an ASCII equivalent.
 .Pp  .Pp
 Output width is limited to 78 visible columns unless literal input lines  Output width is limited to 78 visible columns unless literal input lines
 exceed this limit.  exceed this limit.
 .  .Pp
 .  The following
   .Fl O
   arguments are accepted:
   .Bl -tag -width Ds
   .It Cm width Ns = Ns Ar width
   The output width is set to
   .Ar width ,
   which will normalise to \(>=60.
   .El
 .Ss HTML Output  .Ss HTML Output
 Output produced by  Output produced by
 .Fl T Ns Cm html  .Fl T Ns Cm html
Line 381  cause rendered documents to appear as they do in
Line 240  cause rendered documents to appear as they do in
 .Fl T Ns Cm ascii .  .Fl T Ns Cm ascii .
 .Pp  .Pp
 Special characters are rendered in decimal-encoded UTF-8.  Special characters are rendered in decimal-encoded UTF-8.
 .  .Pp
 .  The following
   .Fl O
   arguments are accepted:
   .Bl -tag -width Ds
   .It Cm includes Ns = Ns Ar fmt
   The string
   .Ar fmt ,
   for example,
   .Ar ../src/%I.html ,
   is used as a template for linked header files (usually via the
   .Sq \&In
   macro).
   Instances of
   .Sq \&%I
   are replaced with the include filename.
   The default is not to present a
   hyperlink.
   .It Cm man Ns = Ns Ar fmt
   The string
   .Ar fmt ,
   for example,
   .Ar ../html%S/%N.%S.html ,
   is used as a template for linked manuals (usually via the
   .Sq \&Xr
   macro).
   Instances of
   .Sq \&%N
   and
   .Sq %S
   are replaced with the linked manual's name and section, respectively.
   If no section is included, section 1 is assumed.
   The default is not to
   present a hyperlink.
   .It Cm style Ns = Ns Ar style.css
   The file
   .Ar style.css
   is used for an external style-sheet.
   This must be a valid absolute or
   relative URI.
   .El
   .Ss PostScript Output
   PostScript
   .Qq Adobe-3.0
   Level-2 pages may be generated by
   .Fl T Ns Cm ps .
   Output pages default to letter sized and are rendered in the Times font
   family, 11-point.
   Margins are calculated as 1/9 the page length and width.
   Line-height is 1.4m.
   .Pp
   Special characters are rendered as in
   .Sx ASCII Output .
   .Pp
   The following
   .Fl O
   arguments are accepted:
   .Bl -tag -width Ds
   .It Cm paper Ns = Ns Ar name
   The paper size
   .Ar name
   may be one of
   .Ar a3 ,
   .Ar a4 ,
   .Ar a5 ,
   .Ar legal ,
   or
   .Ar letter .
   You may also manually specify dimensions as
   .Ar NNxNN ,
   width by height in millimetres.
   If an unknown value is encountered,
   .Ar letter
   is used.
   .El
   .Ss PDF Output
   PDF-1.1 output may be generated by
   .Fl T Ns Cm pdf .
   See
   .Sx PostScript Output
   for
   .Fl O
   arguments and defaults.
 .Ss XHTML Output  .Ss XHTML Output
 Output produced by  Output produced by
 .Fl T Ns Cm xhtml  .Fl T Ns Cm xhtml
Line 392  See
Line 332  See
 .Sx HTML Output  .Sx HTML Output
 for details; beyond generating XHTML tags instead of HTML tags, these  for details; beyond generating XHTML tags instead of HTML tags, these
 output modes are identical.  output modes are identical.
 .  .Sh EXIT STATUS
 .  The
   .Nm
   utility exits with one of the following values, controlled by the message
   .Ar level
   associated with the
   .Fl W
   option:
   .Pp
   .Bl -tag -width Ds -compact
   .It 0
   No warnings or errors occurred, or those that did were ignored because
   they were lower than the requested
   .Ar level .
   .It 2
   At least one warning occurred, but no error, and
   .Fl W Ns Cm warning
   was specified.
   .It 3
   At least one parsing error occurred, but no fatal error, and
   .Fl W Ns Cm error
   or
   .Fl W Ns Cm warning
   was specified.
   .It 4
   A fatal parsing error occurred.
   .It 5
   Invalid command line arguments were specified.
   No input files have been read.
   .It 6
   An operating system error occurred, for example memory exhaustion or an
   error accessing input files.
   Such errors cause
   .Nm
   to exit at once, possibly in the middle of parsing or formatting a file.
   .El
   .Pp
   Note that selecting
   .Fl T Ns Cm lint
   output mode implies
   .Fl W Ns Cm warning .
 .Sh EXAMPLES  .Sh EXAMPLES
 To page manuals to the terminal:  To page manuals to the terminal:
 .  
 .Pp  .Pp
 .D1 $ mandoc \-Wall,error \-fstrict mandoc.1 2\*(Gt&1 | less  .D1 $ mandoc \-Wall,stop mandoc.1 2\*(Gt&1 | less
 .D1 $ mandoc mandoc.1 mdoc.3 mdoc.7 | less  .D1 $ mandoc mandoc.1 mdoc.3 mdoc.7 | less
 .  
 .Pp  .Pp
 To produce HTML manuals with  To produce HTML manuals with
 .Ar style.css  .Ar style.css
Line 409  as the style-sheet:
Line 386  as the style-sheet:
 .D1 $ mandoc \-Thtml -Ostyle=style.css mdoc.7 \*(Gt mdoc.7.html  .D1 $ mandoc \-Thtml -Ostyle=style.css mdoc.7 \*(Gt mdoc.7.html
 .Pp  .Pp
 To check over a large set of manuals:  To check over a large set of manuals:
 .  
 .Pp  .Pp
 .Dl $ mandoc \-Tlint \-fign-errors `find /usr/src -name \e*\e.[1-9]`  .Dl $ mandoc \-Tlint `find /usr/src -name \e*\e.[1-9]`
 .  .Pp
 .  To produce a series of PostScript manuals for A4 paper:
   .Pp
   .D1 $ mandoc \-Tps \-Opaper=a4 mdoc.7 man.7 \*(Gt manuals.ps
   .Sh DIAGNOSTICS
   Standard error messages reporting parsing errors are prefixed by
   .Pp
   .Sm off
   .D1 Ar file : line : column : \ level :
   .Sm on
   .Pp
   where the fields have the following meanings:
   .Bl -tag -width "column"
   .It Ar file
   The name of the input file causing the message.
   .It Ar line
   The line number in that input file.
   Line numbering starts at 1.
   .It Ar column
   The column number in that input file.
   Column numbering starts at 1.
   If the issue is caused by a word, the column number usually
   points to the first character of the word.
   .It Ar level
   The message level, printed in capital letters.
   .El
   .Pp
   Message levels have the following meanings:
   .Bl -tag -width "warning"
   .It Cm fatal
   The parser is unable to parse a given input file at all.
   No formatted output is produced from that input file.
   .It Cm error
   An input file contains syntax that cannot be safely interpreted,
   either because it is invalid or because
   .Nm
   does not implement it yet.
   By discarding part of the input or inserting missing tokens,
   the parser is able to continue, and the error does not prevent
   generation of formatted output, but typically, preparing that
   output involves information loss, broken document structure
   or unintended formatting.
   .It Cm warning
   An input file uses obsolete, discouraged or non-portable syntax.
   All the same, the meaning of the input is unambiguous and a correct
   rendering can be produced.
   Documents causing warnings may render poorly when using other
   formatting tools instead of
   .Nm .
   .El
   .Pp
   Messages of the
   .Cm warning
   and
   .Cm error
   levels are hidden unless their level, or a lower level, is requested using a
   .Fl W
   option or
   .Fl T Ns Cm lint
   output mode.
   .Pp
   The
   .Nm
   utility may also print messages related to invalid command line arguments
   or operating system errors, for example when memory is exhausted or
   input files cannot be read.  Such messages do not carry the prefix
   described above.
 .Sh COMPATIBILITY  .Sh COMPATIBILITY
 This section summarises  This section summarises
 .Nm  .Nm
 compatibility with  compatibility with GNU troff.
 .Xr groff 1 .  
 Each input and output format is separately noted.  Each input and output format is separately noted.
 .  
 .  
 .Ss ASCII Compatibility  .Ss ASCII Compatibility
 .Bl -bullet -compact  .Bl -bullet -compact
 .It  .It
 The  The
 .Sq \e~  
 special character doesn't produce expected behaviour in  
 .Fl T Ns Cm ascii .  
 .  
 .It  
 The  
 .Sq \&Bd \-literal  .Sq \&Bd \-literal
 and  and
 .Sq \&Bd \-unfilled  .Sq \&Bd \-unfilled
Line 440  macros of
Line 472  macros of
 in  in
 .Fl T Ns Cm ascii  .Fl T Ns Cm ascii
 are synonyms, as are \-filled and \-ragged.  are synonyms, as are \-filled and \-ragged.
 .  
 .It  .It
 In  In GNU troff, the
 .Xr groff 1 ,  
 the  
 .Sq \&Pa  .Sq \&Pa
 .Xr mdoc 7  .Xr mdoc 7
 macro does not underline when scoped under an  macro does not underline when scoped under an
Line 452  macro does not underline when scoped under an
Line 481  macro does not underline when scoped under an
 in the FILES section.  in the FILES section.
 This behaves correctly in  This behaves correctly in
 .Nm .  .Nm .
 .  
 .It  .It
 A list or display following the  A list or display following the
 .Sq \&Ss  .Sq \&Ss
Line 461  macro in
Line 489  macro in
 .Fl T Ns Cm ascii  .Fl T Ns Cm ascii
 does not assert a prior vertical break, just as it doesn't with  does not assert a prior vertical break, just as it doesn't with
 .Sq \&Sh .  .Sq \&Sh .
 .  
 .It  .It
 The  The
 .Sq \&na  .Sq \&na
Line 469  The
Line 496  The
 macro in  macro in
 .Fl T Ns Cm ascii  .Fl T Ns Cm ascii
 has no effect.  has no effect.
 .  
 .It  .It
 Words aren't hyphenated.  Words aren't hyphenated.
 .  
 .It  .It
 In normal mode (not a literal block), blocks of spaces aren't preserved,  
 so double spaces following sentence closure are reduced to a single space;  
 .Xr groff 1  
 retains spaces.  
 .  
 .It  
 Sentences are unilaterally monospaced.  Sentences are unilaterally monospaced.
 .El  .El
 .  
 .  
 .Ss HTML/XHTML Compatibility  .Ss HTML/XHTML Compatibility
 .Bl -bullet -compact  .Bl -bullet -compact
 .It  .It
Line 506  and
Line 523  and
 .Sq \&Bl \-tag  .Sq \&Bl \-tag
 list types render similarly (no break following overreached left-hand  list types render similarly (no break following overreached left-hand
 side) due to the expressive constraints of HTML.  side) due to the expressive constraints of HTML.
 .  
 .It  .It
 The  The
 .Xr man 7  .Xr man 7
Line 515  and
Line 531  and
 .Sq TP  .Sq TP
 lists render similarly.  lists render similarly.
 .El  .El
 .  
 .  
 .Sh SEE ALSO  .Sh SEE ALSO
 .Xr man 7 ,  .Xr man 7 ,
 .Xr mandoc_char 7 ,  .Xr mandoc_char 7 ,
 .Xr mdoc 7  .Xr mdoc 7
 .  
 .Sh AUTHORS  .Sh AUTHORS
 The  The
 .Nm  .Nm
 utility was written by  utility was written by
 .An Kristaps Dzonsons Aq kristaps@kth.se .  .An Kristaps Dzonsons Aq kristaps@bsd.lv .
 .  
 .  
 .Sh CAVEATS  .Sh CAVEATS
 The  The
 .Fl T Ns Cm html  .Fl T Ns Cm html
Line 538  CSS2 styling used for
Line 549  CSS2 styling used for
 .Fl m Ns Cm doc  .Fl m Ns Cm doc
 input lists does not render properly in older browsers, such as Internet  input lists does not render properly in older browsers, such as Internet
 Explorer 6 and earlier.  Explorer 6 and earlier.
 .  
 .Pp  .Pp
 In  In
 .Fl T Ns Cm html  .Fl T Ns Cm html
Line 550  which is usually 1024 bytes.
Line 560  which is usually 1024 bytes.
 Be aware of this when setting long link  Be aware of this when setting long link
 formats such as  formats such as
 .Fl O Ns Cm style Ns = Ns Ar really/long/link .  .Fl O Ns Cm style Ns = Ns Ar really/long/link .
 .  
 .Pp  .Pp
 The  
 .Fl T Ns Cm html  
 and  
 .Fl T Ns Cm xhtml  
 output modes don't render the  
 .Sq \es  
 font size escape documented in  
 .Xr mdoc 7  
 and  
 .Xr man 7 .  
 .  
 .Pp  
 Nesting elements within next-line element scopes of  Nesting elements within next-line element scopes of
 .Fl m Ns Cm an ,  .Fl m Ns Cm an ,
 such as  such as
Line 575  will confuse
Line 572  will confuse
 and  and
 .Fl T Ns Cm xhtml  .Fl T Ns Cm xhtml
 and cause them to forget the formatting of the prior next-line scope.  and cause them to forget the formatting of the prior next-line scope.
 .  
 .Pp  .Pp
 The  The
 .Sq i  .Sq i
Line 583  macro in
Line 579  macro in
 .Fl m Ns Cm an  .Fl m Ns Cm an
 should italicise all subsequent text if a line argument is not provided.  should italicise all subsequent text if a line argument is not provided.
 This behaviour is not implemented.  This behaviour is not implemented.
 .  
 The  The
 .Sq \(aq  .Sq \(aq
 control character is an alias for the standard macro control character  control character is an alias for the standard macro control character
Legend:
Removed from v.1.58  
changed lines
  Added in v.1.77
CVSweb