Without HAVE_ERR, don't try to include <err.h>, it probably isn't there.

[mandoc.git] / mandoc_char.7

diff --git a/mandoc_char.7 b/mandoc_char.7
index acc1b6100d4fbf3754288a91d3fde803ebf4c5c1..d272080fc1d9d06bc2c1b72797f72bbbf287e42d 100644 (file)
--- a/mandoc_char.7
+++ b/mandoc_char.7
@@ -1,8 +1,8 @@
-.\"    $Id: mandoc_char.7,v 1.51 2011/11/23 10:09:30 kristaps Exp $
+.\"    $Id: mandoc_char.7,v 1.63 2015/09/02 15:38:35 schwarze Exp $

 .\"
 .\" Copyright (c) 2003 Jason McIntyre <jmc@openbsd.org>
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 .\"
 .\" Copyright (c) 2003 Jason McIntyre <jmc@openbsd.org>
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>

-.\" Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
+.\" Copyright (c) 2011, 2013, 2015 Ingo Schwarze <schwarze@openbsd.org>

 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above


@@ -16,7 +16,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"

-.Dd $Mdocdate: November 23 2011 $
+.Dd $Mdocdate: September 2 2015 $

 .Dt MANDOC_CHAR 7
 .Os
 .Sh NAME
 .Dt MANDOC_CHAR 7
 .Os
 .Sh NAME


@@ -49,7 +49,7 @@ names; instead, provide ASCII transcriptions of the names.
 .Ss Dashes and Hyphens
 In typography there are different types of dashes of various width:
 the hyphen (-),
 .Ss Dashes and Hyphens
 In typography there are different types of dashes of various width:
 the hyphen (-),

-the minus sign (\-),
+the minus sign (\(mi),

 the en-dash (\(en),
 and the em-dash (\(em).
 .Pp
 the en-dash (\(en),
 and the em-dash (\(em).
 .Pp


@@ -64,10 +64,10 @@ lorry-driver
 .Pp
 The mathematical minus sign is used for negative numbers or subtraction.
 It should be written as
 .Pp
 The mathematical minus sign is used for negative numbers or subtraction.
 It should be written as

-.Sq \e- :
+.Sq \e(mi :

 .Bd -unfilled -offset indent
 .Bd -unfilled -offset indent

-a = 3 \e- 1;
-b = \e-2;
+a = 3 \e(mi 1;
+b = \e(mi2;

 .Ed
 .Pp
 The en-dash is used to separate the two elements of a range,
 .Ed
 .Pp
 The en-dash is used to separate the two elements of a range,


@@ -98,26 +98,27 @@ in literal context, and when none of the following special cases apply,
 just use the normal space character
 .Pq Sq \  .
 .Pp
 just use the normal space character
 .Pq Sq \  .
 .Pp

-When filling text, lines may be broken between words, i.e. at space
+When filling text, output lines may be broken between words, i.e. at space

 characters.
 To prevent a line break between two particular words,
 characters.
 To prevent a line break between two particular words,

-use the non-breaking space escape sequence
-.Pq Sq \e~
+use the unpaddable non-breaking space escape sequence
+.Pq Sq \e\ \&

 instead of the normal space character.
 For example, the input string
 instead of the normal space character.
 For example, the input string

-.Dq number\e~1
+.Dq number\e\ 1

 will be kept together as
 will be kept together as

-.Dq number\~1
+.Dq number\ 1

 on the same output line.
 .Pp
 On request and macro lines, the normal space character serves as an
 argument delimiter.
 on the same output line.
 .Pp
 On request and macro lines, the normal space character serves as an
 argument delimiter.

-To include whitespace into arguments, quoting is usually the best choice.
-In some cases, using either the non-breaking
-.Pq Sq \e~
-or the breaking
+To include whitespace into arguments, quoting is usually the best choice;
+see the MACRO SYNTAX section in
+.Xr roff 7 .
+In some cases, using the non-breaking space escape sequence

 .Pq Sq \e\ \&
 .Pq Sq \e\ \&

-space escape sequence may be preferable.
+may be preferable.
+.Pp

 To escape macro names and to protect whitespace at the end
 of input lines, the zero-width space
 .Pq Sq \e&
 To escape macro names and to protect whitespace at the end
 of input lines, the zero-width space
 .Pq Sq \e&


@@ -141,6 +142,28 @@ Note that on text lines, literal double-quote characters can be used
 verbatim.
 All other quote-like characters can be used verbatim as well,
 even on request and macro lines.
 verbatim.
 All other quote-like characters can be used verbatim as well,
 even on request and macro lines.

+.Ss Accents
+In output modes supporting such special output characters, for example
+.Fl T Cm pdf ,
+some
+.Xr roff 7
+formatters convert the following ASCII input characters to the
+following Unicode special output characters:
+.Bl -column x(ga U+2018 -offset indent
+.It \(ga Ta U+2018 Ta left single quotation mark
+.It \(aq Ta U+2019 Ta right single quotation mark
+.It \(ti Ta U+02DC Ta small tilde
+.El
+.Pp
+In prose, this automatic substitution is often desirable;
+but when these characters have to be displayed as plain ASCII
+characters, for example in source code samples, they require
+escaping to render as follows:
+.Bl -column x(ga U+2018 -offset indent
+.It \e(ga Ta U+0060 Ta grave accent
+.It \e(aq Ta U+0027 Ta apostrophe
+.It \e(ti Ta U+007E Ta tilde
+.El

 .Ss Periods
 The period
 .Pq Sq \&.
 .Ss Periods
 The period
 .Pq Sq \&.


@@ -194,14 +217,13 @@ manual.
 Spacing:
 .Bl -column "Input" "Description" -offset indent -compact
 .It Em Input Ta Em Description
 Spacing:
 .Bl -column "Input" "Description" -offset indent -compact
 .It Em Input Ta Em Description

-.It \e~      Ta non-breaking, non-collapsing space
-.It \e       Ta breaking, non-collapsing n-width space
-.It \e^      Ta zero-width space
-.It \e%      Ta zero-width space
+.It Sq \e\ \& Ta unpaddable non-breaking space
+.It \e\(ti   Ta paddable non-breaking space
+.It \e0      Ta unpaddable, breaking digit-width space
+.It \e|      Ta one-sixth \e(em narrow space, zero width in nroff mode
+.It \e^      Ta one-twelfth \e(em half-narrow space, zero width in nroff

 .It \e&      Ta zero-width space
 .It \e&      Ta zero-width space

-.It \e|      Ta zero-width space
-.It \e0      Ta breaking, non-collapsing digit-width space
-.It \ec      Ta removes any trailing space (if applicable)
+.It \e%      Ta zero-width space allowing hyphenation

 .El
 .Pp
 Lines:
 .El
 .Pp
 Lines:


@@ -210,7 +232,7 @@ Lines:
 .It \e(ba    Ta \(ba        Ta bar
 .It \e(br    Ta \(br        Ta box rule
 .It \e(ul    Ta \(ul        Ta underscore
 .It \e(ba    Ta \(ba        Ta bar
 .It \e(br    Ta \(br        Ta box rule
 .It \e(ul    Ta \(ul        Ta underscore

-.It \e(rl    Ta \(rl        Ta overline
+.It \e(rn    Ta \(rn        Ta overline

 .It \e(bb    Ta \(bb        Ta broken bar
 .It \e(sl    Ta \(sl        Ta forward slash
 .It \e(rs    Ta \(rs        Ta backward slash
 .It \e(bb    Ta \(bb        Ta broken bar
 .It \e(sl    Ta \(sl        Ta forward slash
 .It \e(rs    Ta \(rs        Ta backward slash


@@ -273,7 +295,7 @@ Quotes:
 .El
 .Pp
 Brackets:
 .El
 .Pp
 Brackets:

-.Bl -column "xxbracketrightbpx" Rendered Description -offset indent -compact
+.Bl -column "xxbracketrightbtx" Rendered Description -offset indent -compact

 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(lB    Ta \(lB        Ta left bracket
 .It \e(rB    Ta \(rB        Ta right bracket
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(lB    Ta \(lB        Ta left bracket
 .It \e(rB    Ta \(rB        Ta right bracket


@@ -284,30 +306,30 @@ Brackets:
 .It \e(bv    Ta \(bv        Ta brace extension
 .It \e[braceex] Ta \[braceex] Ta brace extension
 .It \e[bracketlefttp] Ta \[bracketlefttp] Ta top-left hooked bracket
 .It \e(bv    Ta \(bv        Ta brace extension
 .It \e[braceex] Ta \[braceex] Ta brace extension
 .It \e[bracketlefttp] Ta \[bracketlefttp] Ta top-left hooked bracket

-.It \e[bracketleftbp] Ta \[bracketleftbp] Ta bottom-left hooked bracket
+.It \e[bracketleftbt] Ta \[bracketleftbt] Ta bottom-left hooked bracket

 .It \e[bracketleftex] Ta \[bracketleftex] Ta left hooked bracket extension
 .It \e[bracketrighttp] Ta \[bracketrighttp] Ta top-right hooked bracket
 .It \e[bracketleftex] Ta \[bracketleftex] Ta left hooked bracket extension
 .It \e[bracketrighttp] Ta \[bracketrighttp] Ta top-right hooked bracket

-.It \e[bracketrightbp] Ta \[bracketrightbp] Ta bottom-right hooked bracket
+.It \e[bracketrightbt] Ta \[bracketrightbt] Ta bottom-right hooked bracket

 .It \e[bracketrightex] Ta \[bracketrightex] Ta right hooked bracket extension
 .It \e(lt    Ta \(lt        Ta top-left hooked brace
 .It \e[bracelefttp] Ta \[bracelefttp] Ta top-left hooked brace
 .It \e(lk    Ta \(lk        Ta mid-left hooked brace
 .It \e[braceleftmid] Ta \[braceleftmid] Ta mid-left hooked brace
 .It \e(lb    Ta \(lb        Ta bottom-left hooked brace
 .It \e[bracketrightex] Ta \[bracketrightex] Ta right hooked bracket extension
 .It \e(lt    Ta \(lt        Ta top-left hooked brace
 .It \e[bracelefttp] Ta \[bracelefttp] Ta top-left hooked brace
 .It \e(lk    Ta \(lk        Ta mid-left hooked brace
 .It \e[braceleftmid] Ta \[braceleftmid] Ta mid-left hooked brace
 .It \e(lb    Ta \(lb        Ta bottom-left hooked brace

-.It \e[braceleftbp] Ta \[braceleftbp] Ta bottom-left hooked brace
+.It \e[braceleftbt] Ta \[braceleftbt] Ta bottom-left hooked brace

 .It \e[braceleftex] Ta \[braceleftex] Ta left hooked brace extension
 .It \e(rt    Ta \(rt        Ta top-left hooked brace
 .It \e[bracerighttp] Ta \[bracerighttp] Ta top-right hooked brace
 .It \e(rk    Ta \(rk        Ta mid-right hooked brace
 .It \e[bracerightmid] Ta \[bracerightmid] Ta mid-right hooked brace
 .It \e(rb    Ta \(rb        Ta bottom-right hooked brace
 .It \e[braceleftex] Ta \[braceleftex] Ta left hooked brace extension
 .It \e(rt    Ta \(rt        Ta top-left hooked brace
 .It \e[bracerighttp] Ta \[bracerighttp] Ta top-right hooked brace
 .It \e(rk    Ta \(rk        Ta mid-right hooked brace
 .It \e[bracerightmid] Ta \[bracerightmid] Ta mid-right hooked brace
 .It \e(rb    Ta \(rb        Ta bottom-right hooked brace

-.It \e[bracerightbp] Ta \[bracerightbp] Ta bottom-right hooked brace
+.It \e[bracerightbt] Ta \[bracerightbt] Ta bottom-right hooked brace

 .It \e[bracerightex] Ta \[bracerightex] Ta right hooked brace extension
 .It \e[parenlefttp] Ta \[parenlefttp] Ta top-left hooked parenthesis
 .It \e[bracerightex] Ta \[bracerightex] Ta right hooked brace extension
 .It \e[parenlefttp] Ta \[parenlefttp] Ta top-left hooked parenthesis

-.It \e[parenleftbp] Ta \[parenleftbp] Ta bottom-left hooked parenthesis
+.It \e[parenleftbt] Ta \[parenleftbt] Ta bottom-left hooked parenthesis

 .It \e[parenleftex] Ta \[parenleftex] Ta left hooked parenthesis extension
 .It \e[parenrighttp] Ta \[parenrighttp] Ta top-right hooked parenthesis
 .It \e[parenleftex] Ta \[parenleftex] Ta left hooked parenthesis extension
 .It \e[parenrighttp] Ta \[parenrighttp] Ta top-right hooked parenthesis

-.It \e[parenrightbp] Ta \[parenrightbp] Ta bottom-right hooked parenthesis
+.It \e[parenrightbt] Ta \[parenrightbt] Ta bottom-right hooked parenthesis

 .It \e[parenrightex] Ta \[parenrightex] Ta right hooked parenthesis extension
 .El
 .Pp
 .It \e[parenrightex] Ta \[parenrightex] Ta right hooked parenthesis extension
 .El
 .Pp


@@ -352,7 +374,7 @@ Mathematical:
 .It \e(-+    Ta \(-+        Ta minus-plus
 .It \e(+-    Ta \(+-        Ta plus-minus
 .It \e[t+-]  Ta \[t+-]      Ta plus-minus (text)
 .It \e(-+    Ta \(-+        Ta minus-plus
 .It \e(+-    Ta \(+-        Ta plus-minus
 .It \e[t+-]  Ta \[t+-]      Ta plus-minus (text)

-.It \e(pc    Ta \(pc        Ta centre-dot
+.It \e(pc    Ta \(pc        Ta center-dot

 .It \e(mu    Ta \(mu        Ta multiply
 .It \e[tmu]  Ta \[tmu]      Ta multiply (text)
 .It \e(c*    Ta \(c*        Ta circle-multiply
 .It \e(mu    Ta \(mu        Ta multiply
 .It \e[tmu]  Ta \[tmu]      Ta multiply (text)
 .It \e(c*    Ta \(c*        Ta circle-multiply


@@ -369,11 +391,11 @@ Mathematical:
 .It \e(!=    Ta \(!=        Ta not equal
 .It \e(==    Ta \(==        Ta equivalent
 .It \e(ne    Ta \(ne        Ta not equivalent
 .It \e(!=    Ta \(!=        Ta not equal
 .It \e(==    Ta \(==        Ta equivalent
 .It \e(ne    Ta \(ne        Ta not equivalent

-.It \e(=~    Ta \(=~        Ta congruent
-.It \e(-~    Ta \(-~        Ta asymptotically congruent
-.It \e(ap    Ta \(ap        Ta asymptotically similar
-.It \e(~~    Ta \(~~        Ta approximately similar
-.It \e(~=    Ta \(~=        Ta approximately equal
+.It \e(ap    Ta \(ap        Ta tilde operator
+.It \e(|=    Ta \(|=        Ta asymptotically equal
+.It \e(=\(ti Ta \(=~        Ta approximately equal
+.It \e(\(ti\(ti Ta \(~~        Ta almost equal
+.It \e(\(ti= Ta \(~=        Ta almost equal

 .It \e(pt    Ta \(pt        Ta proportionate
 .It \e(es    Ta \(es        Ta empty set
 .It \e(mo    Ta \(mo        Ta element
 .It \e(pt    Ta \(pt        Ta proportionate
 .It \e(es    Ta \(es        Ta empty set
 .It \e(mo    Ta \(mo        Ta element


@@ -436,15 +458,15 @@ Accents:
 .It \e(a.    Ta \(a.        Ta dotted
 .It \e(a^    Ta \(a^        Ta circumflex
 .It \e(aa    Ta \(aa        Ta acute
 .It \e(a.    Ta \(a.        Ta dotted
 .It \e(a^    Ta \(a^        Ta circumflex
 .It \e(aa    Ta \(aa        Ta acute

-.It \e'      Ta \'          Ta acute
+.It \e\(aq   Ta \'          Ta acute

 .It \e(ga    Ta \(ga        Ta grave
 .It \e(ga    Ta \(ga        Ta grave

-.It \e`      Ta \`          Ta grave
+.It \e\(ga   Ta \`          Ta grave

 .It \e(ab    Ta \(ab        Ta breve
 .It \e(ac    Ta \(ac        Ta cedilla
 .It \e(ad    Ta \(ad        Ta dieresis
 .It \e(ah    Ta \(ah        Ta caron
 .It \e(ao    Ta \(ao        Ta ring
 .It \e(ab    Ta \(ab        Ta breve
 .It \e(ac    Ta \(ac        Ta cedilla
 .It \e(ad    Ta \(ad        Ta dieresis
 .It \e(ah    Ta \(ah        Ta caron
 .It \e(ao    Ta \(ao        Ta ring

-.It \e(a~    Ta \(a~        Ta tilde
+.It \e(a\(ti Ta \(a~        Ta tilde

 .It \e(ho    Ta \(ho        Ta ogonek
 .It \e(ha    Ta \(ha        Ta hat (text)
 .It \e(ti    Ta \(ti        Ta tilde (text)
 .It \e(ho    Ta \(ho        Ta ogonek
 .It \e(ha    Ta \(ha        Ta hat (text)
 .It \e(ti    Ta \(ti        Ta tilde (text)


@@ -453,32 +475,32 @@ Accents:
 Accented letters:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 Accented letters:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description

-.It \e('A    Ta \('A        Ta acute A
-.It \e('E    Ta \('E        Ta acute E
-.It \e('I    Ta \('I        Ta acute I
-.It \e('O    Ta \('O        Ta acute O
-.It \e('U    Ta \('U        Ta acute U
-.It \e('a    Ta \('a        Ta acute a
-.It \e('e    Ta \('e        Ta acute e
-.It \e('i    Ta \('i        Ta acute i
-.It \e('o    Ta \('o        Ta acute o
-.It \e('u    Ta \('u        Ta acute u
-.It \e(`A    Ta \(`A        Ta grave A
-.It \e(`E    Ta \(`E        Ta grave E
-.It \e(`I    Ta \(`I        Ta grave I
-.It \e(`O    Ta \(`O        Ta grave O
-.It \e(`U    Ta \(`U        Ta grave U
-.It \e(`a    Ta \(`a        Ta grave a
-.It \e(`e    Ta \(`e        Ta grave e
-.It \e(`i    Ta \(`i        Ta grave i
-.It \e(`o    Ta \(`i        Ta grave o
-.It \e(`u    Ta \(`u        Ta grave u
-.It \e(~A    Ta \(~A        Ta tilde A
-.It \e(~N    Ta \(~N        Ta tilde N
-.It \e(~O    Ta \(~O        Ta tilde O
-.It \e(~a    Ta \(~a        Ta tilde a
-.It \e(~n    Ta \(~n        Ta tilde n
-.It \e(~o    Ta \(~o        Ta tilde o
+.It \e(\(aqA Ta \('A        Ta acute A
+.It \e(\(aqE Ta \('E        Ta acute E
+.It \e(\(aqI Ta \('I        Ta acute I
+.It \e(\(aqO Ta \('O        Ta acute O
+.It \e(\(aqU Ta \('U        Ta acute U
+.It \e(\(aqa Ta \('a        Ta acute a
+.It \e(\(aqe Ta \('e        Ta acute e
+.It \e(\(aqi Ta \('i        Ta acute i
+.It \e(\(aqo Ta \('o        Ta acute o
+.It \e(\(aqu Ta \('u        Ta acute u
+.It \e(\(gaA Ta \(`A        Ta grave A
+.It \e(\(gaE Ta \(`E        Ta grave E
+.It \e(\(gaI Ta \(`I        Ta grave I
+.It \e(\(gaO Ta \(`O        Ta grave O
+.It \e(\(gaU Ta \(`U        Ta grave U
+.It \e(\(gaa Ta \(`a        Ta grave a
+.It \e(\(gae Ta \(`e        Ta grave e
+.It \e(\(gai Ta \(`i        Ta grave i
+.It \e(\(gao Ta \(`i        Ta grave o
+.It \e(\(gau Ta \(`u        Ta grave u
+.It \e(\(tiA Ta \(~A        Ta tilde A
+.It \e(\(tiN Ta \(~N        Ta tilde N
+.It \e(\(tiO Ta \(~O        Ta tilde O
+.It \e(\(tia Ta \(~a        Ta tilde a
+.It \e(\(tin Ta \(~n        Ta tilde n
+.It \e(\(tio Ta \(~o        Ta tilde o

 .It \e(:A    Ta \(:A        Ta dieresis A
 .It \e(:E    Ta \(:E        Ta dieresis E
 .It \e(:I    Ta \(:I        Ta dieresis I
 .It \e(:A    Ta \(:A        Ta dieresis A
 .It \e(:E    Ta \(:E        Ta dieresis E
 .It \e(:I    Ta \(:I        Ta dieresis I


@@ -655,19 +677,20 @@ manual.
 .It \e*(Ai   Ta \*(Ai       Ta ANSI standard name
 .El
 .Sh UNICODE CHARACTERS
 .It \e*(Ai   Ta \*(Ai       Ta ANSI standard name
 .El
 .Sh UNICODE CHARACTERS

-The escape sequence
+The escape sequences

 .Pp
 .Pp

-.Dl \e[uXXXX]
+.Dl \e[uXXXX] and \eC\(aquXXXX\(aq

 .Pp
 .Pp

-is interpreted as a Unicode codepoint.
+are interpreted as Unicode codepoints.

 The codepoint must be in the range above U+0080 and less than U+10FFFF.
 The codepoint must be in the range above U+0080 and less than U+10FFFF.

-For compatibility, points must be zero-padded to four characters; if
+For compatibility, the hexadecimal digits
+.Sq A
+to
+.Sq F
+must be given as uppercase characters,
+and points must be zero-padded to four characters; if

 greater than four characters, no zero padding is allowed.
 Unicode surrogates are not allowed.
 greater than four characters, no zero padding is allowed.
 Unicode surrogates are not allowed.

-.\" .Pp
-.\" Unicode glyphs attenuate to the
-.\" .Sq \&?
-.\" character if invalid or not rendered by current output media.

 .Sh NUMBERED CHARACTERS
 For backward compatibility with existing manuals,
 .Xr mandoc 1
 .Sh NUMBERED CHARACTERS
 For backward compatibility with existing manuals,
 .Xr mandoc 1


@@ -680,11 +703,11 @@ escape sequence, inserting the character
 from the current character set into the output.
 Of course, this is inherently non-portable and is already marked
 as deprecated in the Heirloom roff manual.
 from the current character set into the output.
 Of course, this is inherently non-portable and is already marked
 as deprecated in the Heirloom roff manual.

-For example, do not use \eN'34', use \e(dq, or even the plain
+For example, do not use \eN\(aq34\(aq, use \e(dq, or even the plain

 .Sq \(dq
 character where possible.
 .Sh COMPATIBILITY
 .Sq \(dq
 character where possible.
 .Sh COMPATIBILITY

-This section documents compatibility between mandoc and other other
+This section documents compatibility between mandoc and other

 troff implementations, at this time limited to GNU troff
 .Pq Qq groff .
 .Pp
 troff implementations, at this time limited to GNU troff
 .Pq Qq groff .
 .Pp


@@ -697,14 +720,14 @@ In
 .Fl T Ns Cm ascii ,
 the
 \e(ss, \e(nm, \e(nb, \e(nc, \e(ib, \e(ip, \e(pp, \e[sum], \e[product],
 .Fl T Ns Cm ascii ,
 the
 \e(ss, \e(nm, \e(nb, \e(nc, \e(ib, \e(ip, \e(pp, \e[sum], \e[product],

-\e[coproduct], \e(gr, \e(\-h, and \e(a. special characters render
+\e[coproduct], \e(gr, \e(-h, and \e(a. special characters render

 differently between mandoc and groff.
 .It
 In
 .Fl T Ns Cm html
 and
 .Fl T Ns Cm xhtml ,
 differently between mandoc and groff.
 .It
 In
 .Fl T Ns Cm html
 and
 .Fl T Ns Cm xhtml ,

-the \e(~=, \e(nb, and \e(nc special characters render differently
+the \e(\(ti=, \e(nb, and \e(nc special characters render differently

 between mandoc and groff.
 .It
 The
 between mandoc and groff.
 .It
 The


@@ -728,12 +751,11 @@ known representation.
 The
 .Nm
 manual page was written by
 The
 .Nm
 manual page was written by

-.An Kristaps Dzonsons ,
-.Mt kristaps@bsd.lv .
+.An Kristaps Dzonsons Aq Mt kristaps@bsd.lv .

 .Sh CAVEATS
 .Sh CAVEATS

-The
+The predefined string

 .Sq \e*(Ba
 .Sq \e*(Ba

-escape mimics the behaviour of the
+mimics the behaviour of the

 .Sq \&|
 character in
 .Xr mdoc 7 ;
 .Sq \&|
 character in
 .Xr mdoc 7 ;