[latexrefman-commits] [SCM] latexrefman updated: r1078 - trunk

Karl Berry INVALID.NOREPLY at gnu.org.ua
Wed Jan 26 19:12:18 CET 2022


Author: karl
Date: 2022-01-26 18:12:17 +0000 (Wed, 26 Jan 2022)
New Revision: 1078

Modified:
   trunk/ChangeLog
   trunk/NEWS
   trunk/latex2e.html
   trunk/latex2e.info
   trunk/latex2e.pdf
   trunk/latex2e.texi
Log:
rebuild for Jan 22 release

Modified: trunk/ChangeLog
===================================================================
--- trunk/ChangeLog	2022-01-26 17:47:45 UTC (rev 1077)
+++ trunk/ChangeLog	2022-01-26 18:12:17 UTC (rev 1078)
@@ -1,6 +1,11 @@
 2022-01-26  Karl Berry  <karl at freefriends.org>
 
-	* latex2e.texi (Units of length): correct pt/mm/cm equivalences.
+	January 2022 release to CTAN.
+	* NEWS: update.
+
+2022-01-26  Karl Berry  <karl at freefriends.org>
+
+	* latex2e.texi (Units of length): correct pt/mm/cm conversions.
 	Report from Geoff Odhner, 24 Jan 2022 22:08:58.
 	Also use @ftable, other wording changes.
 
@@ -159,7 +164,7 @@
 	Deik. See https://tug.org/pipermail/latexrefman/2021q3/000832.html.
 	(\sbox & \savebox): In example, declare box register before using
 	it.
-	(lrbox): Typoes.
+	(lrbox): Typos.
 
 2021-10-08  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
@@ -168,7 +173,8 @@
 
 2021-10-08  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
-	* latex2e-fr.texi (\DeclareTextSymbol): Fix guillemet glyph for PDF output.
+	* latex2e-fr.texi (\DeclareTextSymbol): Fix guillemet glyph for
+	PDF output.
 	(\subsection): Fix Greek letter glyphs for the PDF output.
 	(verse): Align on English with better examples.
 	(Math symbols): Add \Phi --- as per Jim's r722.
@@ -1671,21 +1677,17 @@
 	(Footnotes of footnotes): ``First noted in Wilson'' -> ``Noted in
 	Wilson''.
 
-
 2021-09-05  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
 	* latex2e.texi Implement fix suggested by Laurent Van Deik.
-	(\sbox & \savebox): In example, declare box register before using
-	it.
+	(\sbox & \savebox): In example, declare box register before using it.
 	(lrbox): Fix @xref.
 
-
 2021-09-01  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
 	* latex2e.texi (\multicolumn): Typo, credits Faheem Mitha
           2021-09-01 on latexrefman list.
 
-
 2021-09-01  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
 	* common.texi (\mathbbN): New math symbol.
@@ -1912,6 +1914,7 @@
 	  this node.
 
 2021-08-24  Jim Hefferon  <jhefferon at smcvt.edu>
+
         * latex2e.texi (Producing the index manually): Add subsection.
 	Provides a place to define theindex environment.on \caption.
 
@@ -2001,10 +2004,12 @@
 	``before any output'' to ``before any input file is met''.
 
 2021-08-16  Jim Hefferon  <jhefferon at smcvt.edu>
+
         * latex2e.texi (\caption): Add section on \caption.  Put in
 	cross-references to figure and table entries.
 
 2021-08-13  Jim Hefferon  <jhefferon at smcvt.edu>
+
         * latex2e.texi (Command line input): Replace the graphics draft
 	option example with \includeonly{} example.
 
@@ -2149,11 +2154,13 @@
 	(Command line input): Slurp the text from the French version.
 
 2021-08-11  Jim Hefferon  <jhefferon at smcvt.edu>
+
         * latex2e.texi (Indexes): Expand section header text.
 
 2021-08-11  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
-	* latex2e.texi (\newlength): ``command sequence'' -> ``control sequene''.
+	* latex2e.texi (\newlength): ``command sequence'' -> ``control
+	sequence''.
 	(Making paragraphs): Clarify the empty lines are in the source
 	code. Clarify that the paragrapgh separation can have more than
 	one blank line, and the line may be not empty for the
@@ -2176,12 +2183,14 @@
 	(\(SPACE)): Indicate leading blanks are ignored.
 
 2021-08-09  Jim Hefferon  <jhefferon at smcvt.edu>
+
         * latex2e.texi (Font sizes): Add paragraph on using font size
 	commands in formulas.
 
 2021-08-09  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
-	* latex2e.texi (\normalsfcodes): ``space factor values'' -> ``space factors''.
+	* latex2e.texi (\normalsfcodes): ``space factor values'' ->
+	``space factors''.
 	(\(SPACE) ): @key{...}-ify index entries such as \NEWLINE ->
 	\@key{NEWLINE}. Use a two column table in the exemple to stress
 	change of space amount. Make more generic the statement about
@@ -2211,6 +2220,7 @@
 	\frenchspacing. Some rewording.
 
 2021-08-05  Jim Hefferon  <jhefferon at smcvt.edu>
+
         * latex2e.texi (Math styles): Add section on Math styles,
 	include moving some material from Math formulas and expanding.
 
@@ -2223,17 +2233,20 @@
 
 	* latex2e-fr.texi (Spaces): Re-align on the English version.
 	(\enspace & \quad & \qquad): New node, translate from English.
-	(\bigbreak & \medbreak & \smallbreak, \strut): New nodes to be translated
+	(\bigbreak & \medbreak & \smallbreak, \strut): New nodes to be
+	translated
 	(\vspace, \vfill, \addvspace): Change order of these nodes to align the
 	doc strcuture on English version.
 
 2021-08-04  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
-	* latex2e-fr.texi (\newcommand & \renewcommand): Align node on English version.
+	* latex2e-fr.texi (\newcommand & \renewcommand): Align node on
+	English version.
 
 2021-08-04  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
-	* latex2e-fr.texi (\clearpage & \cleardoublepage): Align node on English version.
+	* latex2e-fr.texi (\clearpage & \cleardoublepage): Align node on
+	English version.
 
 2021-08-04  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
@@ -2247,16 +2260,19 @@
 
 2021-08-03  Vincent Bela\"iche  <vincentb1 at users.sourceforge.net>
 
-	* latex2e.texi (fontenc package): Add fontspec to the package index + add word put.
+	* latex2e.texi (fontenc package): Add fontspec to the package
+	index + add word put.
 	(\newcommand & \renewcommand): letter -> character, as \ is not a
 	letter + minor clarification.
 
 2021-07-26  Jim Hefferon  <jhefferon at smcvt.edu>
+
         * latex2e.texi (\pagebreak & \nopagebreak): add mention of
 	\samepage and samepage environment; note they are obsolete and
 	unreliable.
 
 2021-07-24  Jim Hefferon  <jhefferon at smcvt.edu>
+
         New release for CTAN, version of July 2021.
 
 2021-07-21  Karl Berry  <karl at freefriends.org>

Modified: trunk/NEWS
===================================================================
--- trunk/NEWS	2022-01-26 17:47:45 UTC (rev 1077)
+++ trunk/NEWS	2022-01-26 18:12:17 UTC (rev 1078)
@@ -5,22 +5,31 @@
 Spanish translation originally from Nacho Pacheco (currently looking for
 a maintainer).
 
-
 Changes in January 2022 release:
+
 Some changes in January 2022 release:
 
-Some noteworthy changes since the last release:
+New sections:
+* \caption
+* BibTeX error messages
+* Producing the index manually
 
+Fixes:
+* Units of length: correct pt/mm/cm conversions.
+* Command line input: extended text.
+* throughout: index entries; typographical, reference, wording.
 
+
 Changes in July 2021 release
 
+(see ChangeLog)
+
 
 Changes in July 2020 release:
 
-Some noteworthy changes since the last release:
- * Entries for \openin, \openout, \message, \write, \write18.
- * Section on fontenc.
- * Section on math delimiters.
- * Describe -output-directory option.
- * Section on xr.
- * Section on expressions.
- * Entry on \contentsline.
+* Entries for \openin, \openout, \message, \write, \write18.
+* Section on fontenc.
+* Section on math delimiters.
+* Describe -output-directory option.
+* Section on xr.
+* Section on expressions.
+* Entry on \contentsline.
 
 
 Changes in October 2018 release:
 

Modified: trunk/latex2e.html
===================================================================
--- trunk/latex2e.html	2022-01-26 17:47:45 UTC (rev 1077)
+++ trunk/latex2e.html	2022-01-26 18:12:17 UTC (rev 1078)
@@ -4,7 +4,7 @@
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <!-- This document is an unofficial reference manual for LaTeX, a
-document preparation system, version of October 2021.
+document preparation system, version of January 2022.
 
 This manual was originally translated from LATEX.HLP v1.0a in the
 VMS Help Library.  The pre-translation version was written by
@@ -21,7 +21,7 @@
 text was directly copied.)
 
 Copyright 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Karl Berry.
+2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 Karl Berry.
 
 Copyright 1988, 1994, 2007 Stephen Gilmore.
 
@@ -39,10 +39,10 @@
 
 Permission is granted to copy and distribute translations of this manual
 into another language, under the above conditions for modified versions. -->
-<title>LaTeX2e unofficial reference manual (October 2021)</title>
+<title>LaTeX2e unofficial reference manual (January 2022)</title>
 
-<meta name="description" content="LaTeX2e unofficial reference manual (October 2021)">
-<meta name="keywords" content="LaTeX2e unofficial reference manual (October 2021)">
+<meta name="description" content="LaTeX2e unofficial reference manual (January 2022)">
+<meta name="keywords" content="LaTeX2e unofficial reference manual (January 2022)">
 <meta name="resource-type" content="document">
 <meta name="distribution" content="global">
 <meta name="Generator" content="makeinfo">
@@ -102,7 +102,7 @@
 </head>
 
 <body lang="en">
-<h1 class="settitle" align="center">LaTeX2e unofficial reference manual (October 2021)</h1>
+<h1 class="settitle" align="center">LaTeX2e unofficial reference manual (January 2022)</h1>
 
 
 
@@ -148,7 +148,7 @@
 <span id="LaTeX2e_003a-An-unofficial-reference-manual"></span><h1 class="top">LaTeX2e: An unofficial reference manual</h1>
 
 <p>This document is an unofficial reference manual (version of
-October 2021) for LaTeX2e, a document preparation system.
+January 2022) for LaTeX2e, a document preparation system.
 </p>
 
 <div class="Contents_element" id="SEC_Contents">
@@ -9969,7 +9969,9 @@
 </div>
 <span id="sloppypar-1"></span><h4 class="subsection">9.6.1 <code>sloppypar</code></h4>
 
-<span id="index-sloppypar"></span>
+<span id="index-environment_002c-sloppypar"></span>
+<span id="index-sloppypar-environment-1"></span>
+        
 <span id="index-sloppypar-environment"></span>
 
 <p>Synopsis:
@@ -10658,7 +10660,7 @@
        \textit{HMS Polychrest} &Post Captain  \\  
        \textit{HMS Lively}     &Post Captain \\
        \textit{HMS Surprise}   &A number of books\footnote{%
-                                  Starting with HMS Surprise.}
+                                  Starting with \textit{HMS Surprise}.}
      \end{tabular}
   \end{minipage}                              
 \end{center}
@@ -10695,8 +10697,11 @@
 \end{center}
 </pre></div>
 
+<span id="index-package_002c-tablefootnote"></span>
+<span id="index-tablefootnote-package"></span>
+
 <p>For a floating <code>table</code> environment (see <a href="#table"><code>table</code></a>), use the
-<samp>tablefootnote</samp> package.
+<code>tablefootnote</code> package.
 </p>
 <div class="example">
 <pre class="example">\usepackage{tablefootnote}  % in preamble
@@ -12453,10 +12458,10 @@
 \end{minipage}
 </pre></div>
 
-<p>TeX actually has three levels of infinity for glue components:
-<code>fil</code>, <code>fill</code>, and <code>filll</code>.  The later ones are more
-infinite than the earlier ones.  Ordinarily document authors only use
-the middle one (see <a href="#g_t_005chfill"><code>\hfill</code></a> and see <a href="#g_t_005cvfill"><code>\vfill</code></a>).
+<p>TeX has three levels of infinity for glue components: <code>fil</code>,
+<code>fill</code>, and <code>filll</code>.  The later ones are more infinite than
+the earlier ones.  Ordinarily document authors only use the middle one
+(see <a href="#g_t_005chfill"><code>\hfill</code></a> and see <a href="#g_t_005cvfill"><code>\vfill</code></a>).
 </p>
 <p>Multiplying a rubber length by a number turns it into a rigid length, so
 that after <code>\setlength{\ylength}{1in plus 0.2in}</code> and
@@ -12491,78 +12496,91 @@
 <dl compact="compact">
 <dt id='index-pt'><span><code>pt</code><a href='#index-pt' class='copiable-anchor'> ¶</a></span></dt>
 <dd><span id="index-point"></span>
-<span id="units-of-length-pt"></span><p>Point, 1/72.27 inch.  The conversion to metric units
-is 1point = 2.845mm = .2845cm. 
+<span id="units-of-length-pt"></span><p>Point, 1/72.27 inch.  The (approximate) conversion to metric units
+is 1point = .35146mm = .035146cm. 
 </p>
 </dd>
-<dt id='index-pica'><span><code>pc</code><a href='#index-pica' class='copiable-anchor'> ¶</a></span></dt>
-<dd><span id="index-pc"></span>
+<dt id='index-pc'><span><code>pc</code><a href='#index-pc' class='copiable-anchor'> ¶</a></span></dt>
+<dd><span id="index-pica"></span>
 <span id="units-of-length-pc"></span><p>Pica, 12 pt
 </p>
 </dd>
 <dt id='index-in'><span><code>in</code><a href='#index-in' class='copiable-anchor'> ¶</a></span></dt>
 <dd><span id="index-inch"></span>
-<span id="units-of-length-in"></span><p>Inch,  72.27 pt
+<span id="units-of-length-in"></span><p>Inch, 72.27 pt
 </p>
 </dd>
 <dt id='index-bp'><span><code>bp</code><a href='#index-bp' class='copiable-anchor'> ¶</a></span></dt>
 <dd><span id="index-big-point"></span>
+<span id="index-PostScript-point"></span>
 <span id="units-of-length-bp"></span><p>Big point, 1/72 inch.  This length is the definition of a point in
 PostScript and many desktop publishing systems.
 </p>
 </dd>
-<dt id='index-centimeter'><span><code>cm</code><a href='#index-centimeter' class='copiable-anchor'> ¶</a></span></dt>
-<dd><span id="index-cm"></span>
-<span id="units-of-length-cm"></span><p>Centimeter
+<dt id='index-mm'><span><code>mm</code><a href='#index-mm' class='copiable-anchor'> ¶</a></span></dt>
+<dd><span id="index-millimeter"></span>
+<span id="units-of-length-mm"></span><p>Millimeter, 2.845 pt
 </p>
 </dd>
-<dt id='index-millimeter'><span><code>mm</code><a href='#index-millimeter' class='copiable-anchor'> ¶</a></span></dt>
-<dd><span id="index-mm"></span>
-<span id="units-of-length-mm"></span><p>Millimeter
+<dt id='index-cm'><span><code>cm</code><a href='#index-cm' class='copiable-anchor'> ¶</a></span></dt>
+<dd><span id="index-centimeter"></span>
+<span id="units-of-length-cm"></span><p>Centimeter, 10 mm
 </p>
 </dd>
-<dt id='index-didot-point'><span><code>dd</code><a href='#index-didot-point' class='copiable-anchor'> ¶</a></span></dt>
-<dd><span id="index-dd"></span>
+<dt id='index-dd'><span><code>dd</code><a href='#index-dd' class='copiable-anchor'> ¶</a></span></dt>
+<dd><span id="index-didot-point"></span>
 <span id="units-of-length-dd"></span><p>Didot point, 1.07 pt
 </p>
 </dd>
-<dt id='index-cicero'><span><code>cc</code><a href='#index-cicero' class='copiable-anchor'> ¶</a></span></dt>
-<dd><span id="index-cc"></span>
+<dt id='index-cc'><span><code>cc</code><a href='#index-cc' class='copiable-anchor'> ¶</a></span></dt>
+<dd><span id="index-cicero"></span>
 <span id="units-of-length-cc"></span><p>Cicero, 12 dd
 </p>
 </dd>
-<dt id='index-scaled-point'><span><code>sp</code><a href='#index-scaled-point' class='copiable-anchor'> ¶</a></span></dt>
-<dd><span id="index-sp"></span>
+<dt id='index-sp'><span><code>sp</code><a href='#index-sp' class='copiable-anchor'> ¶</a></span></dt>
+<dd><span id="index-scaled-point"></span>
 <span id="units-of-length-sp"></span><p>Scaled point, 1/65536 pt
 </p>
 </dd>
 </dl>
 
+<p>Three other units are defined according to the current font, rather
+than being an absolute dimension.
+</p>
+<dl compact="compact">
+<dt id='index-ex-1'><span><code>ex</code><a href='#index-ex-1' class='copiable-anchor'> ¶</a></span></dt>
+<dd><span id="index-x_002dheight"></span>
 <span id="index-ex"></span>
-<span id="index-x_002dheight"></span>
-<span id="index-ex-1"></span>
-<span id="index-m_002dwidth"></span>
-<span id="index-em"></span>
-<span id="index-em-1"></span>
-<span id="Lengths_002fem"></span><span id="Lengths_002fen"></span><span id="Lengths_002fex"></span><span id="units-of-length-em"></span><span id="units-of-length-en"></span><span id="units-of-length-ex"></span><p>Two other lengths that are often used are values set by the designer of
-the font.  The x-height of the current font <em>ex</em>, traditionally the
+<span id="Lengths_002fex"></span><span id="units-of-length-ex"></span><p>The x-height of the current font <em>ex</em>, traditionally the
 height of the lowercase letter x, is often used for vertical
-lengths. Similarly <em>em</em>, traditionally the width of the capital
-letter M, is often used for horizontal lengths (there is also
-<code>\enspace</code>, which is <code>0.5em</code>).  Use of these can help make a
-definition work better across font changes.  For example, a definition
-of the vertical space between list items given as
-<code>\setlength{\itemsep}{1ex plus 0.05ex minus 0.01ex}</code> is more
-likely to still be reasonable if the font is changed than a definition
-given in points.
+lengths.
 </p>
-<span id="index-mu_002c-math-unit"></span>
-<span id="index-mu"></span>
-<p>In math mode, many definitions are expressed in terms of the math unit
-<em>mu</em> given by 1 em = 18 mu, where the em is taken from the current
-math symbols family.  See <a href="#Spacing-in-math-mode">Spacing in math mode</a>.
+</dd>
+<dt id='index-em-1'><span><code>em</code><a href='#index-em-1' class='copiable-anchor'> ¶</a></span></dt>
+<dd><span id="index-m_002dwidth"></span>
+<span id="index-em"></span>
+<span id="Lengths_002fem"></span><span id="units-of-length-em"></span><p>Similarly <em>em</em>, traditionally the width of the capital
+letter M, is often used for horizontal lengths.  This is also often
+the size of the current font, e.g., a nominal 10pt font will
+have 1em = 10pt.  LaTeX has several commands to produce
+horizontal spaces based on the em (see <a href="#g_t_005censpace-_0026-_005cquad-_0026-_005cqquad"><code>\enspace</code> & <code>\quad</code> & <code>\qquad</code></a>).
 </p>
+</dd>
+<dt id='index-mu'><span><code>mu</code><a href='#index-mu' class='copiable-anchor'> ¶</a></span></dt>
+<dd><span id="index-mu_002c-math-unit"></span>
+<span id="units-of-length-mu"></span><p>Finally, in math mode, many definitions are expressed in terms
+of the math unit <em>mu</em>, defined by 1em = 18mu, where the
+em is taken from the current math symbols family.  See <a href="#Spacing-in-math-mode">Spacing in math mode</a>.
+</p>
+</dd>
+</dl>
 
+<p>Using these units can help make a definition work better across font
+changes.  For example, a definition of the vertical space between list
+items given as <code>\setlength{\itemsep}{1ex plus 0.05ex minus
+0.01ex}</code> is more likely to still be reasonable if the font is changed
+than a definition given in points.
+</p>
 <hr>
 </div>
 <div class="section" id="g_t_005csetlength">
@@ -12602,10 +12620,8 @@
 <code>\newlength{\specparindent}\setlength{\sepcparindent}{...}</code>,
 then you get an error like ‘<samp>Undefined control sequence. <argument>
 \sepcindent</samp>’.  If you omit the backslash at the start of the length name
-then you get an error like ‘<samp>Missing number, treated as zero. <to be
-read again> \relax l.19 \setlength{specparindent}{0.6\parindent}</samp>’
+then you get an error like ‘<samp>Missing number, treated as zero.</samp>’.
 </p>
-
 <hr>
 </div>
 <div class="section" id="g_t_005caddtolength">
@@ -13390,7 +13406,7 @@
 
 <p>The American Mathematical Society has made freely available a set of
 packages that greatly expand your options for writing mathematics,
-<code>amsmath</code> and <samp>amssymb</samp> (also be aware of the <code>mathtools</code>
+<code>amsmath</code> and <code>amssymb</code> (also be aware of the <code>mathtools</code>
 package that is an extension to, and loads, <code>amsmath</code>).  New
 documents that will have mathematical text should use these packages.
 Descriptions of these packages is outside the scope of this document;
@@ -13639,7 +13655,7 @@
 </dd>
 <dt id='index-_005cBox'><span><code>\Box</code><a href='#index-_005cBox' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x25A1; Modal operator for necessity; square open box
-(ordinary).  Not available in plain TeX. In LaTeX you need to load the <samp>amssymb</samp> package.
+(ordinary).  Not available in plain TeX. In LaTeX you need to load the <code>amssymb</code> package.
 </p>
 </dd>
 <dt id='index-_005cbullet'><span><code>\bullet</code><a href='#index-_005cbullet' class='copiable-anchor'> ¶</a></span></dt>
@@ -13673,7 +13689,7 @@
 </dd>
 <dt id='index-_005ccomplement'><span><code>\complement</code><a href='#index-_005ccomplement' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x2201;, Set complement, used as a superscript as in
-<code>$S^\complement$</code> (ordinary).  Not available in plain TeX. In LaTeX you need to load the <samp>amssymb</samp> package. Also used:
+<code>$S^\complement$</code> (ordinary).  Not available in plain TeX. In LaTeX you need to load the <code>amssymb</code> package. Also used:
 <code>$S^{\mathsf{c}}$</code> or <code>$\bar{S}$</code>.
 </p>
 </dd>
@@ -13712,7 +13728,7 @@
 </p>
 </dd>
 <dt id='index-_005cDiamond'><span><code>\Diamond</code><a href='#index-_005cDiamond' class='copiable-anchor'> ¶</a></span></dt>
-<dd><p>&#x25C7; Large diamond operator (ordinary).  Not available in plain TeX. In LaTeX you need to load the <samp>amssymb</samp> package.
+<dd><p>&#x25C7; Large diamond operator (ordinary).  Not available in plain TeX. In LaTeX you need to load the <code>amssymb</code> package.
 </p>
 </dd>
 <dt id='index-_005cdiamond'><span><code>\diamond</code><a href='#index-_005cdiamond' class='copiable-anchor'> ¶</a></span></dt>
@@ -13959,7 +13975,7 @@
 <dt id='index-_005clhd'><span><code>\lhd</code><a href='#index-_005clhd' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x25C1; Arrowhead, that is, triangle, pointing left (binary).
 For the normal subgroup symbol you should load
-<samp>amssymb</samp> and use <code>\vartriangleleft</code> (which is a relation
+<code>amssymb</code> and use <code>\vartriangleleft</code> (which is a relation
 and so gives better spacing).
 </p>
 </dd>
@@ -14068,7 +14084,7 @@
 following operator (relation).
 </p>
 <p>Many negated operators are available that don’t require <code>\not</code>,
-particularly with the <samp>amssymb</samp> package. For example, <code>\notin</code>
+particularly with the <code>amssymb</code> package. For example, <code>\notin</code>
 is typographically preferable to <code>\not\in</code>.
 </p>
 </dd>
@@ -14226,7 +14242,7 @@
 </dd>
 <dt id='index-_005crestriction'><span><code>\restriction</code><a href='#index-_005crestriction' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x21BE;, Restriction of a function (relation). Synonym:
-<code>\upharpoonright</code>.  Not available in plain TeX. In LaTeX you need to load the <samp>amssymb</samp> package.
+<code>\upharpoonright</code>.  Not available in plain TeX. In LaTeX you need to load the <code>amssymb</code> package.
 </p>
 </dd>
 <dt id='index-_005crevemptyset'><span><code>\revemptyset</code><a href='#index-_005crevemptyset' class='copiable-anchor'> ¶</a></span></dt>
@@ -14242,7 +14258,7 @@
 <dt id='index-_005crhd'><span><code>\rhd</code><a href='#index-_005crhd' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x25C1; Arrowhead, that is, triangle, pointing right (binary).
 For the normal subgroup symbol you should instead
-load <samp>amssymb</samp> and use <code>\vartriangleright</code> (which is a
+load <code>amssymb</code> and use <code>\vartriangleright</code> (which is a
 relation and so gives better spacing).
 </p>
 </dd>
@@ -14334,7 +14350,7 @@
 </dd>
 <dt id='index-_005csqsubset'><span><code>\sqsubset</code><a href='#index-_005csqsubset' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x228F;, Square subset symbol (relation). Similar:
-subset <code>\subset</code>. Not available in plain TeX. In LaTeX you need to load the <samp>amssymb</samp> package.
+subset <code>\subset</code>. Not available in plain TeX. In LaTeX you need to load the <code>amssymb</code> package.
 </p>
 </dd>
 <dt id='index-_005csqsubseteq'><span><code>\sqsubseteq</code><a href='#index-_005csqsubseteq' class='copiable-anchor'> ¶</a></span></dt>
@@ -14344,7 +14360,7 @@
 </dd>
 <dt id='index-_005csqsupset'><span><code>\sqsupset</code><a href='#index-_005csqsupset' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x2290;, Square superset symbol (relation). Similar:
-superset <code>\supset</code>. Not available in plain TeX. In LaTeX you need to load the <samp>amssymb</samp> package.
+superset <code>\supset</code>. Not available in plain TeX. In LaTeX you need to load the <code>amssymb</code> package.
 </p>
 </dd>
 <dt id='index-_005csqsupseteq'><span><code>\sqsupseteq</code><a href='#index-_005csqsupseteq' class='copiable-anchor'> ¶</a></span></dt>
@@ -14432,21 +14448,21 @@
 <dt id='index-_005ctriangleleft'><span><code>\triangleleft</code><a href='#index-_005ctriangleleft' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x25C1; Not-filled triangle pointing left
 (binary). Similar: <code>\lhd</code>. For the normal subgroup symbol you
-should load <samp>amssymb</samp> and use <code>\vartriangleleft</code> (which
+should load <code>amssymb</code> and use <code>\vartriangleleft</code> (which
 is a relation and so gives better spacing).
 </p>
 </dd>
 <dt id='index-_005ctriangleright'><span><code>\triangleright</code><a href='#index-_005ctriangleright' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x25B7; Not-filled triangle pointing right
 (binary). For the normal subgroup symbol you should instead load
-<samp>amssymb</samp> and use <code>\vartriangleright</code> (which is a
+<code>amssymb</code> and use <code>\vartriangleright</code> (which is a
 relation and so gives better spacing).
 </p>
 </dd>
 <dt id='index-_005cunlhd'><span><code>\unlhd</code><a href='#index-_005cunlhd' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x22B4; Left-pointing not-filled underlined arrowhead, that is,
 triangle, with a line under (binary). For the
-normal subgroup symbol load <samp>amssymb</samp> and
+normal subgroup symbol load <code>amssymb</code> and
 use <code>\vartrianglelefteq</code> (which is a relation and so gives
 better spacing).
 </p>
@@ -14454,7 +14470,7 @@
 <dt id='index-_005cunrhd'><span><code>\unrhd</code><a href='#index-_005cunrhd' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x22B5; Right-pointing not-filled underlined arrowhead, that is,
 triangle, with a line under (binary). For the
-normal subgroup symbol load <samp>amssymb</samp> and
+normal subgroup symbol load <code>amssymb</code> and
 use <code>\vartrianglerighteq</code> (which is a relation and so gives
 better spacing).
 </p>
@@ -14486,7 +14502,7 @@
 <dt id='index-_005cupharpoonright'><span><code>\upharpoonright</code><a href='#index-_005cupharpoonright' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x21BE;, Up harpoon, with barb on right side
 (relation). Synonym: <code>\restriction</code>.
-Not available in plain TeX. In LaTeX you need to load the <samp>amssymb</samp> package.
+Not available in plain TeX. In LaTeX you need to load the <code>amssymb</code> package.
 </p>
 </dd>
 <dt id='index-_005cuplus'><span><code>\uplus</code><a href='#index-_005cuplus' class='copiable-anchor'> ¶</a></span></dt>
@@ -14512,7 +14528,7 @@
 </dd>
 <dt id='index-_005cvanothing'><span><code>\vanothing</code><a href='#index-_005cvanothing' class='copiable-anchor'> ¶</a></span></dt>
 <dd><p>&#x2205;, Empty set symbol. Similar: <code>\emptyset</code>. Related:
-<code>\revemptyset</code>. Not available in plain TeX. In LaTeX you need to load the <samp>amssymb</samp> package.
+<code>\revemptyset</code>. Not available in plain TeX. In LaTeX you need to load the <code>amssymb</code> package.
 </p>
 </dd>
 <dt id='index-_005cvarphi'><span><code>\varphi</code><a href='#index-_005cvarphi' class='copiable-anchor'> ¶</a></span></dt>
@@ -16606,7 +16622,7 @@
 </p>
 </dd>
 <dt><span><code>empty</code></span></dt>
-<dd><p>The header and footer is empty.
+<dd><p>The header and footer are both empty.
 </p>
 </dd>
 <dt><span><code>headings</code></span></dt>
@@ -17485,7 +17501,7 @@
 </p>
 <div class="example">
 <pre class="example">\renewcommand{\hrulefill}{%
-  \leavevmode\leaders\hrule height 1pt\hfill\kern\z@}
+  \leavevmode\leaders\hrule height 1pt\hfill\kern0pt }
 </pre></div>
 
 <p>which changes the default thickness of 0.4pt to 1pt.
@@ -17493,7 +17509,7 @@
 </p>
 <div class="example">
 <pre class="example">\renewcommand{\dotfill}{%
-  \leavevmode\cleaders\hb at xt@1.00em{\hss .\hss }\hfill\kern\z@}
+  \leavevmode\cleaders\hbox to 1.00em{\hss .\hss }\hfill\kern0pt }
 </pre></div>
 
 <p>which changes the default length of 0.33em to 1.00em.
@@ -19214,7 +19230,7 @@
 
 <p>Declare how to handle graphic files whose names end in <var>extension</var>.
 </p>
-<p>This example declares that all files with names have the form
+<p>This example declares that all files with names of the form
 <samp>filename-without-dot.mps</samp> will be treated as output from MetaPost,
 meaning that the printer driver will use its MetaPost-handling code to
 input the file.
@@ -19902,7 +19918,7 @@
 <p>The unstarred form <code>\resizebox</code> takes <var>vertical length</var> to be
 the box’s height while the starred form <code>\resizebox*</code> takes it to
 be height+depth.  For instance, make the text have a height+depth of a
-quarter inch with <code>\resizebox*{!}{0.25in}{\parbox{1in}{This
+quarter-inch with <code>\resizebox*{!}{0.25in}{\parbox{3.5in}{This
 box has both height and depth.}}</code>.
 </p>
 <p>You can use <code>\depth</code>, <code>\height</code>, <code>\totalheight</code>, and
@@ -20688,9 +20704,9 @@
 </pre></div>
 
 <p>A TeX primitive command used to generate accented characters from
-accent marks and letters. The accent mark is selected by <var>number</var>,
-a numeric argument, followed by a space and then a <var>character</var> argument
-constructs the accented character in the current font.
+accent marks and letters. The accent mark is selected by <var>number</var>, a
+numeric argument, followed by a space and then a <var>character</var>
+argument to construct the accented character in the current font.
 </p>
 <p>These are accented ‘<samp>e</samp>’ characters.
 </p>
@@ -20702,7 +20718,8 @@
 \accent23 e
 </pre></div>
 
-<p>The first is a grave, the second is breve, etc.
+<p>The first is a grave, the second a caron, the third a breve, the fourth
+a macron, and the fifth a ring above.
 </p>
 <p>The position of the accent is determined by the font designer and so the
 outcome of <code>\accent</code> use may differ between fonts. In LaTeX it is
@@ -23201,9 +23218,9 @@
 <pre class="example">\openout <var>number</var>=<var>filename</var>
 </pre></div>
 
-<p>Open a file for reading material, or for writing it.  The <var>number</var>
-must be between 0 and 15, as in <code>\openin3</code> (in LuaLaTeX
-<var>number</var> can be between 0 and 255).
+<p>Open a file for reading material, or for writing it.  In most engines,
+the <var>number</var> must be between 0 and 15, as in <code>\openin3</code>; in
+LuaLaTeX, <var>number</var> can be between 0 and 127.
 </p>
 <p>Here TeX opens the file <samp>presidents.tex</samp> for reading.
 </p>
@@ -26049,6 +26066,7 @@
 <tr><td></td><td valign="top"><a href="#index-environment_002c-picture"><code><span class="roman">environment</span>, <code>picture</code></code></a>:</td><td> </td><td valign="top"><a href="#picture">picture</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-environment_002c-quotation"><code><span class="roman">environment</span>, <code>quotation</code></code></a>:</td><td> </td><td valign="top"><a href="#quotation-_0026-quote">quotation & quote</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-environment_002c-quote"><code><span class="roman">environment</span>, <code>quote</code></code></a>:</td><td> </td><td valign="top"><a href="#quotation-_0026-quote">quotation & quote</a></td></tr>
+<tr><td></td><td valign="top"><a href="#index-environment_002c-sloppypar"><code><span class="roman">environment</span>, <code>sloppypar</code></code></a>:</td><td> </td><td valign="top"><a href="#sloppypar">sloppypar</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-environment_002c-tabbing"><code><span class="roman">environment</span>, <code>tabbing</code></code></a>:</td><td> </td><td valign="top"><a href="#tabbing">tabbing</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-environment_002c-table"><code><span class="roman">environment</span>, <code>table</code></code></a>:</td><td> </td><td valign="top"><a href="#table">table</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-environment_002c-tabular"><code><span class="roman">environment</span>, <code>tabular</code></code></a>:</td><td> </td><td valign="top"><a href="#tabular">tabular</a></td></tr>
@@ -26241,7 +26259,7 @@
 <tr><td></td><td valign="top"><a href="#index-implementations-of-TeX">implementations of TeX</a>:</td><td> </td><td valign="top"><a href="#TeX-engines">TeX engines</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-importing-graphics">importing graphics</a>:</td><td> </td><td valign="top"><a href="#g_t_005cincludegraphics">\includegraphics</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-in"><code>in</code></a>:</td><td> </td><td valign="top"><a href="#Units-of-length">Units of length</a></td></tr>
-<tr><td></td><td valign="top"><a href="#index-inch"><code>inch</code></a>:</td><td> </td><td valign="top"><a href="#Units-of-length">Units of length</a></td></tr>
+<tr><td></td><td valign="top"><a href="#index-inch">inch</a>:</td><td> </td><td valign="top"><a href="#Units-of-length">Units of length</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-including-graphics">including graphics</a>:</td><td> </td><td valign="top"><a href="#g_t_005cincludegraphics">\includegraphics</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-indent_002c-forcing">indent, forcing</a>:</td><td> </td><td valign="top"><a href="#g_t_005cindent-_0026-_005cnoindent">\indent & \noindent</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-indentation-of-paragraphs_002c-in-minipage">indentation of paragraphs, in minipage</a>:</td><td> </td><td valign="top"><a href="#minipage">minipage</a></td></tr>
@@ -26640,6 +26658,7 @@
 <tr><td></td><td valign="top"><a href="#index-package_002c-siunitx"><span class="roman">package</span>, <code>siunitx</code></a>:</td><td> </td><td valign="top"><a href="#minipage">minipage</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-package_002c-siunitx-1"><span class="roman">package</span>, <code>siunitx</code></a>:</td><td> </td><td valign="top"><a href="#g_t_007e">~</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-package_002c-suffix"><span class="roman">package</span>, <code>suffix</code></a>:</td><td> </td><td valign="top"><a href="#g_t_005c_0040ifstar">\@ifstar</a></td></tr>
+<tr><td></td><td valign="top"><a href="#index-package_002c-tablefootnote"><span class="roman">package</span>, <code>tablefootnote</code></a>:</td><td> </td><td valign="top"><a href="#Footnotes-in-a-table">Footnotes in a table</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-package_002c-texosquery"><span class="roman">package</span>, <code>texosquery</code></a>:</td><td> </td><td valign="top"><a href="#g_t_005cwrite18">\write18</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-package_002c-textcase"><span class="roman">package</span>, <code>textcase</code></a>:</td><td> </td><td valign="top"><a href="#Upper-and-lower-case">Upper and lower case</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-package_002c-TikZ"><span class="roman">package</span>, <code>TikZ</code></a>:</td><td> </td><td valign="top"><a href="#g_t_005cline">\line</a></td></tr>
@@ -26730,6 +26749,7 @@
 <tr><td></td><td valign="top"><a href="#index-position_002c-in-picture">position, in picture</a>:</td><td> </td><td valign="top"><a href="#picture">picture</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-positional-parameter">positional parameter</a>:</td><td> </td><td valign="top"><a href="#g_t_005cnewcommand-_0026-_005crenewcommand">\newcommand & \renewcommand</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-postamble"><code>postamble</code></a>:</td><td> </td><td valign="top"><a href="#makeindex">makeindex</a></td></tr>
+<tr><td></td><td valign="top"><a href="#index-PostScript-point">PostScript point</a>:</td><td> </td><td valign="top"><a href="#Units-of-length">Units of length</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-postscript_002c-in-letters">postscript, in letters</a>:</td><td> </td><td valign="top"><a href="#g_t_005cps">\ps</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-pounds-symbol">pounds symbol</a>:</td><td> </td><td valign="top"><a href="#Text-symbols">Text symbols</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-preamble"><code>preamble</code></a>:</td><td> </td><td valign="top"><a href="#makeindex">makeindex</a></td></tr>
@@ -26847,8 +26867,8 @@
 <tr><td></td><td valign="top"><a href="#index-skip-register_002c-plain-TeX">skip register, plain TeX</a>:</td><td> </td><td valign="top"><a href="#g_t_005cnewlength">\newlength</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-slanted-font">slanted font</a>:</td><td> </td><td valign="top"><a href="#Font-styles">Font styles</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-slides-class"><code>slides <span class="roman">class</span></code></a>:</td><td> </td><td valign="top"><a href="#Document-classes">Document classes</a></td></tr>
-<tr><td></td><td valign="top"><a href="#index-sloppypar"><code>sloppypar</code></a>:</td><td> </td><td valign="top"><a href="#sloppypar">sloppypar</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-sloppypar-environment">sloppypar environment</a>:</td><td> </td><td valign="top"><a href="#sloppypar">sloppypar</a></td></tr>
+<tr><td></td><td valign="top"><a href="#index-sloppypar-environment-1"><code><code>sloppypar</code> <span class="roman">environment</span></code></a>:</td><td> </td><td valign="top"><a href="#sloppypar">sloppypar</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-slot_002c-font">slot, font</a>:</td><td> </td><td valign="top"><a href="#g_t_005cDeclareTextAccent">\DeclareTextAccent</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-small-caps-font">small caps font</a>:</td><td> </td><td valign="top"><a href="#Font-styles">Font styles</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-sort"><code>sort</code></a>:</td><td> </td><td valign="top"><a href="#g_t_005cnewglossaryentry">\newglossaryentry</a></td></tr>
@@ -26929,6 +26949,7 @@
 <tr><td></td><td valign="top"><a href="#index-table-of-contents_002c-avoiding-footnotes">table of contents, avoiding footnotes</a>:</td><td> </td><td valign="top"><a href="#Footnotes-in-section-headings">Footnotes in section headings</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-table-of-contents_002c-creating">table of contents, creating</a>:</td><td> </td><td valign="top"><a href="#Table-of-contents-etc_002e">Table of contents etc.</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-table-of-contents_002c-sectioning-numbers-printed">table of contents, sectioning numbers printed</a>:</td><td> </td><td valign="top"><a href="#Sectioning">Sectioning</a></td></tr>
+<tr><td></td><td valign="top"><a href="#index-tablefootnote-package"><code>tablefootnote</code> <span class="roman">package</span></a>:</td><td> </td><td valign="top"><a href="#Footnotes-in-a-table">Footnotes in a table</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-tables_002c-creating">tables, creating</a>:</td><td> </td><td valign="top"><a href="#table">table</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-tabular-environment"><code><code>tabular</code> <span class="roman">environment</span></code></a>:</td><td> </td><td valign="top"><a href="#tabular">tabular</a></td></tr>
 <tr><td></td><td valign="top"><a href="#index-template-_0028simple_0029_002c-article">template (simple), <code>article</code></a>:</td><td> </td><td valign="top"><a href="#article-template">article template</a></td></tr>

Modified: trunk/latex2e.info
===================================================================
--- trunk/latex2e.info	2022-01-26 17:47:45 UTC (rev 1077)
+++ trunk/latex2e.info	2022-01-26 18:12:17 UTC (rev 1078)
@@ -2,7 +2,7 @@
 latex2e.texi.
 
 This document is an unofficial reference manual for LaTeX, a document
-preparation system, version of October 2021.
+preparation system, version of January 2022.
 
    This manual was originally translated from 'LATEX.HLP' v1.0a in the
 VMS Help Library.  The pre-translation version was written by George D.
@@ -17,7 +17,7 @@
 Dietze.  (From these references no text was directly copied.)
 
    Copyright 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-2017, 2018, 2019, 2020, 2021 Karl Berry.
+2017, 2018, 2019, 2020, 2021, 2022 Karl Berry.
 Copyright 1988, 1994, 2007 Stephen Gilmore.
 Copyright 1994, 1995, 1996 Torsten Martinsen.
 
@@ -44,8 +44,8 @@
 LaTeX2e: An unofficial reference manual
 ***************************************
 
-This document is an unofficial reference manual (version of October
-2021) for LaTeX2e, a document preparation system.
+This document is an unofficial reference manual (version of January
+2022) for LaTeX2e, a document preparation system.
 
 * Menu:
 
@@ -7479,7 +7479,7 @@
             \textit{HMS Polychrest} &Post Captain  \\
             \textit{HMS Lively}     &Post Captain \\
             \textit{HMS Surprise}   &A number of books\footnote{%
-                                       Starting with HMS Surprise.}
+                                       Starting with \textit{HMS Surprise}.}
           \end{tabular}
        \end{minipage}
      \end{center}
@@ -8837,10 +8837,10 @@
        \hspace{0pt plus 1fill}
      \end{minipage}
 
-   TeX actually has three levels of infinity for glue components: 'fil',
-'fill', and 'filll'.  The later ones are more infinite than the earlier
-ones.  Ordinarily document authors only use the middle one (*note
-\hfill:: and *note \vfill::).
+   TeX has three levels of infinity for glue components: 'fil', 'fill',
+and 'filll'.  The later ones are more infinite than the earlier ones.
+Ordinarily document authors only use the middle one (*note \hfill:: and
+*note \vfill::).
 
    Multiplying a rubber length by a number turns it into a rigid length,
 so that after '\setlength{\ylength}{1in plus 0.2in}' and
@@ -8867,8 +8867,8 @@
 mode.
 
 'pt'
-     Point, 1/72.27 inch.  The conversion to metric units is 1point =
-     2.845mm = .2845cm.
+     Point, 1/72.27 inch.  The (approximate) conversion to metric units
+     is 1point = .35146mm = .035146cm.
 
 'pc'
      Pica, 12 pt
@@ -8880,12 +8880,12 @@
      Big point, 1/72 inch.  This length is the definition of a point in
      PostScript and many desktop publishing systems.
 
+'mm'
+     Millimeter, 2.845 pt
+
 'cm'
-     Centimeter
+     Centimeter, 10 mm
 
-'mm'
-     Millimeter
-
 'dd'
      Didot point, 1.07 pt
 
@@ -8895,21 +8895,32 @@
 'sp'
      Scaled point, 1/65536 pt
 
-   Two other lengths that are often used are values set by the designer
-of the font.  The x-height of the current font "ex", traditionally the
-height of the lowercase letter x, is often used for vertical lengths.
-Similarly "em", traditionally the width of the capital letter M, is
-often used for horizontal lengths (there is also '\enspace', which is
-'0.5em').  Use of these can help make a definition work better across
-font changes.  For example, a definition of the vertical space between
-list items given as '\setlength{\itemsep}{1ex plus 0.05ex minus 0.01ex}'
-is more likely to still be reasonable if the font is changed than a
+   Three other units are defined according to the current font, rather
+than being an absolute dimension.
+
+'ex'
+     The x-height of the current font "ex", traditionally the height of
+     the lowercase letter x, is often used for vertical lengths.
+
+'em'
+     Similarly "em", traditionally the width of the capital letter M, is
+     often used for horizontal lengths.  This is also often the size of
+     the current font, e.g., a nominal 10pt font will have 1em = 10pt.
+     LaTeX has several commands to produce horizontal spaces based on
+     the em (*note \enspace & \quad & \qquad::).
+
+'mu'
+     Finally, in math mode, many definitions are expressed in terms of
+     the math unit "mu", defined by 1em = 18mu, where the em is taken
+     from the current math symbols family.  *Note Spacing in math
+     mode::.
+
+   Using these units can help make a definition work better across font
+changes.  For example, a definition of the vertical space between list
+items given as '\setlength{\itemsep}{1ex plus 0.05ex minus 0.01ex}' is
+more likely to still be reasonable if the font is changed than a
 definition given in points.
 
-   In math mode, many definitions are expressed in terms of the math
-unit "mu" given by 1 em = 18 mu, where the em is taken from the current
-math symbols family.  *Note Spacing in math mode::.
-
 
 File: latex2e.info,  Node: \setlength,  Next: \addtolength,  Prev: Units of length,  Up: Lengths
 
@@ -8940,8 +8951,7 @@
 '\newlength{\specparindent}\setlength{\sepcparindent}{...}', then you
 get an error like 'Undefined control sequence. <argument> \sepcindent'.
 If you omit the backslash at the start of the length name then you get
-an error like 'Missing number, treated as zero. <to be read again>
-\relax l.19 \setlength{specparindent}{0.6\parindent}'
+an error like 'Missing number, treated as zero.'.
 
 
 File: latex2e.info,  Node: \addtolength,  Next: \settodepth,  Prev: \setlength,  Up: Lengths
@@ -11871,7 +11881,7 @@
      centered.
 
 'empty'
-     The header and footer is empty.
+     The header and footer are both empty.
 
 'headings'
      Put running headers and footers on each page.  The document style
@@ -12531,13 +12541,13 @@
 here
 
      \renewcommand{\hrulefill}{%
-       \leavevmode\leaders\hrule height 1pt\hfill\kern\z@}
+       \leavevmode\leaders\hrule height 1pt\hfill\kern0pt }
 
 which changes the default thickness of 0.4pt to 1pt.  Similarly, adjust
 the dot spacing as with
 
      \renewcommand{\dotfill}{%
-       \leavevmode\cleaders\hb at xt@1.00em{\hss .\hss }\hfill\kern\z@}
+       \leavevmode\cleaders\hbox to 1.00em{\hss .\hss }\hfill\kern0pt }
 
 which changes the default length of 0.33em to 1.00em.
 
@@ -13827,7 +13837,7 @@
 
    Declare how to handle graphic files whose names end in EXTENSION.
 
-   This example declares that all files with names have the form
+   This example declares that all files with names of the form
 'filename-without-dot.mps' will be treated as output from MetaPost,
 meaning that the printer driver will use its MetaPost-handling code to
 input the file.
@@ -14354,8 +14364,8 @@
 
    The unstarred form '\resizebox' takes VERTICAL LENGTH to be the box's
 height while the starred form '\resizebox*' takes it to be height+depth.
-For instance, make the text have a height+depth of a quarter inch with
-'\resizebox*{!}{0.25in}{\parbox{1in}{This box has both height and
+For instance, make the text have a height+depth of a quarter-inch with
+'\resizebox*{!}{0.25in}{\parbox{3.5in}{This box has both height and
 depth.}}'.
 
    You can use '\depth', '\height', '\totalheight', and '\width' to
@@ -14814,8 +14824,8 @@
 
    A TeX primitive command used to generate accented characters from
 accent marks and letters.  The accent mark is selected by NUMBER, a
-numeric argument, followed by a space and then a CHARACTER argument
-constructs the accented character in the current font.
+numeric argument, followed by a space and then a CHARACTER argument to
+construct the accented character in the current font.
 
    These are accented 'e' characters.
 
@@ -14825,7 +14835,8 @@
      \accent22 e
      \accent23 e
 
-The first is a grave, the second is breve, etc.
+The first is a grave, the second a caron, the third a breve, the fourth
+a macron, and the fifth a ring above.
 
    The position of the accent is determined by the font designer and so
 the outcome of '\accent' use may differ between fonts.  In LaTeX it is
@@ -16644,9 +16655,9 @@
 
      \openout NUMBER=FILENAME
 
-   Open a file for reading material, or for writing it.  The NUMBER must
-be between 0 and 15, as in '\openin3' (in LuaLaTeX NUMBER can be between
-0 and 255).
+   Open a file for reading material, or for writing it.  In most
+engines, the NUMBER must be between 0 and 15, as in '\openin3'; in
+LuaLaTeX, NUMBER can be between 0 and 127.
 
    Here TeX opens the file 'presidents.tex' for reading.
 
@@ -19054,7 +19065,7 @@
 * box, save:                             \sbox & \savebox.    (line   6)
 * box, use saved box:                    \usebox.             (line   6)
 * boxes:                                 Boxes.               (line   6)
-* bp:                                    Units of length.     (line  20)
+* bp:                                    Units of length.     (line  19)
 * brace, left, in text:                  Text symbols.        (line  89)
 * brace, right, in text:                 Text symbols.        (line  92)
 * braces:                                Delimiters.          (line   6)
@@ -19079,7 +19090,7 @@
                                                               (line  18)
 * category code, character:              \makeatletter & \makeatother.
                                                               (line  18)
-* cc:                                    Units of length.     (line  33)
+* cc:                                    Units of length.     (line  32)
 * cc list, in letters:                   \cc.                 (line   6)
 * cedilla accent:                        Accents.             (line  61)
 * center environment:                    center.              (line   6)
@@ -19089,7 +19100,7 @@
 * centered period, in text:              Text symbols.        (line 170)
 * centering text, declaration for:       \centering.          (line   6)
 * centering text, environment for:       center.              (line   6)
-* centimeter:                            Units of length.     (line  24)
+* centimeter:                            Units of length.     (line  27)
 * changing case of characters:           Upper and lower case.
                                                               (line   6)
 * chapter:                               Sectioning.          (line   6)
@@ -19143,7 +19154,7 @@
                                                               (line  99)
 * closing letters:                       \closing.            (line   6)
 * closing quote:                         Text symbols.        (line  58)
-* cm:                                    Units of length.     (line  24)
+* cm:                                    Units of length.     (line  26)
 * cm-super package:                      fontenc package.     (line  36)
 * cmd.exe, used by \write18:             \write18.            (line  60)
 * code, typesetting:                     verbatim.            (line   6)
@@ -19220,7 +19231,7 @@
 * dbltopnumber:                          Floats.              (line 134)
 * dbltopnumber <1>:                      Floats.              (line 135)
 * dcolumn package:                       array.               (line  74)
-* dd:                                    Units of length.     (line  30)
+* dd:                                    Units of length.     (line  29)
 * declaration form of font size commands: Font sizes.         (line  24)
 * declaration form of font style commands: Font styles.       (line   8)
 * define color:                          Define colors.       (line   6)
@@ -19302,8 +19313,8 @@
 * e-TeX:                                 TeX engines.         (line  16)
 * ellipses:                              Dots.                (line   6)
 * ellipsis:                              Text symbols.        (line  39)
-* em:                                    Units of length.     (line  38)
-* em <1>:                                Units of length.     (line  38)
+* em:                                    Units of length.     (line  46)
+* em <1>:                                Units of length.     (line  45)
 * em-dash:                               Text symbols.        (line 119)
 * em-dash, three-quarters:               Text symbols.        (line 201)
 * em-dash, two-thirds:                   Text symbols.        (line 207)
@@ -19352,6 +19363,7 @@
 * environment, picture:                  picture.             (line   6)
 * environment, quotation:                quotation & quote.   (line   6)
 * environment, quote:                    quotation & quote.   (line   6)
+* environment, sloppypar:                sloppypar.           (line   6)
 * environment, tabbing:                  tabbing.             (line   6)
 * environment, table:                    table.               (line   6)
 * environment, tabular:                  tabular.             (line   6)
@@ -19394,8 +19406,8 @@
 * euro symbol:                           Text symbols.        (line 128)
 * eurosym package:                       Text symbols.        (line 128)
 * eurosym package <1>:                   Text symbols.        (line 129)
-* ex:                                    Units of length.     (line  38)
-* ex <1>:                                Units of length.     (line  38)
+* ex:                                    Units of length.     (line  42)
+* ex <1>:                                Units of length.     (line  41)
 * exclamation point, upside-down:        Text symbols.        (line 136)
 * executivepaper option:                 Document class options.
                                                               (line  19)
@@ -19579,7 +19591,7 @@
 * immediate \write:                      \write.              (line  60)
 * implementations of TeX:                TeX engines.         (line   6)
 * importing graphics:                    \includegraphics.    (line   6)
-* in:                                    Units of length.     (line  17)
+* in:                                    Units of length.     (line  16)
 * inch:                                  Units of length.     (line  17)
 * including graphics:                    \includegraphics.    (line   6)
 * indent, forcing:                       \indent & \noindent. (line   6)
@@ -19751,7 +19763,7 @@
 * lualatex-dev:                          TeX engines.         (line  65)
 * LuaTeX:                                TeX engines.         (line  33)
 * LuaTeX, 256 output streams in:         \write.              (line  42)
-* m-width:                               Units of length.     (line  38)
+* m-width:                               Units of length.     (line  46)
 * macron accent:                         Accents.             (line  36)
 * macron accent, math:                   Math accents.        (line  14)
 * macros2e package:                      \makeatletter & \makeatother.
@@ -19802,21 +19814,21 @@
                                                               (line  45)
 * mhchem package:                        Subscripts & superscripts.
                                                               (line  62)
-* millimeter:                            Units of length.     (line  27)
+* millimeter:                            Units of length.     (line  24)
 * minipage environment:                  minipage.            (line   6)
 * minipage, creating a:                  minipage.            (line   6)
 * minted package:                        tabbing.             (line 146)
 * minted package <1>:                    verbatim.            (line  35)
 * minted package <2>:                    \verb.               (line  42)
 * mirrors of CTAN:                       CTAN.                (line  25)
-* mm:                                    Units of length.     (line  27)
+* mm:                                    Units of length.     (line  23)
 * modes:                                 Modes.               (line   6)
 * monospace font:                        Font styles.         (line  97)
 * moving arguments:                      \protect.            (line  19)
 * mpfootnote counter:                    \footnote.           (line  62)
 * mpfootnote counter <1>:                Counters.            (line  15)
-* mu:                                    Units of length.     (line  49)
-* mu, math unit:                         Units of length.     (line  49)
+* mu:                                    Units of length.     (line  52)
+* mu, math unit:                         Units of length.     (line  53)
 * multicolumn text:                      \twocolumn.          (line   6)
 * multilingual support:                  Accents.             (line   6)
 * multind package:                       Indexes.             (line  51)
@@ -20046,6 +20058,8 @@
 * package, siunitx:                      minipage.            (line 137)
 * package, siunitx <1>:                  ~.                   (line  42)
 * package, suffix:                       \@ifstar.            (line  64)
+* package, tablefootnote:                Footnotes in a table.
+                                                              (line  53)
 * package, texosquery:                   \write18.            (line  65)
 * package, textcase:                     Upper and lower case.
                                                               (line  42)
@@ -20117,7 +20131,7 @@
 * part <1>:                              \part.               (line   6)
 * part counter:                          Counters.            (line  15)
 * pattern, current tab stops, tabbing:   tabbing.             (line  51)
-* pc:                                    Units of length.     (line  14)
+* pc:                                    Units of length.     (line  13)
 * PDF graphic files:                     \includegraphics.    (line   6)
 * pdflatex:                              TeX engines.         (line  15)
 * pdflatex command:                      Output files.        (line  20)
@@ -20153,6 +20167,7 @@
 * positional parameter:                  \newcommand & \renewcommand.
                                                               (line  54)
 * postamble:                             makeindex.           (line  54)
+* PostScript point:                      Units of length.     (line  20)
 * postscript, in letters:                \ps.                 (line   6)
 * pounds symbol:                         Text symbols.        (line  51)
 * preamble:                              makeindex.           (line  50)
@@ -20162,7 +20177,7 @@
                                                               (line  23)
 * pronunciation:                         Overview.            (line  27)
 * PSTricks package:                      \line.               (line  35)
-* pt:                                    Units of length.     (line  10)
+* pt:                                    Units of length.     (line   9)
 * quad:                                  Spacing in math mode.
                                                               (line  69)
 * question mark, upside-down:            Text symbols.        (line 173)
@@ -20278,13 +20293,13 @@
 * skip register, plain TeX:              \newlength.          (line   6)
 * slanted font:                          Font styles.         (line  94)
 * slides class:                          Document classes.    (line  11)
-* sloppypar:                             sloppypar.           (line   6)
 * sloppypar environment:                 sloppypar.           (line   6)
+* sloppypar environment <1>:             sloppypar.           (line   6)
 * slot, font:                            \DeclareTextAccent.  (line  13)
 * small caps font:                       Font styles.         (line  88)
 * sort:                                  \newglossaryentry.   (line  55)
 * source files, making self-contained:   filecontents.        (line  42)
-* sp:                                    Units of length.     (line  36)
+* sp:                                    Units of length.     (line  35)
 * space between lines:                   \baselineskip & \baselinestretch.
                                                               (line   6)
 * space, inserting horizontal:           \hss.                (line   6)
@@ -20377,6 +20392,8 @@
 * table of contents, creating:           Table of contents etc..
                                                               (line   6)
 * table of contents, sectioning numbers printed: Sectioning.  (line  81)
+* tablefootnote package:                 Footnotes in a table.
+                                                              (line  53)
 * tables, creating:                      table.               (line   6)
 * tabular environment:                   tabular.             (line   6)
 * template (simple), article:            article template.    (line   6)
@@ -20531,7 +20548,7 @@
                                                               (line  48)
 * writing external files:                filecontents.        (line   6)
 * writing letters:                       Letters.             (line   6)
-* x-height:                              Units of length.     (line  38)
+* x-height:                              Units of length.     (line  42)
 * xdvi command:                          Output files.        (line  10)
 * xdvipdfmx:                             TeX engines.         (line  42)
 * xelatex:                               TeX engines.         (line  41)
@@ -20549,550 +20566,549 @@
 
 
 Tag Table:
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-Node: About this document3662
-Node: Overview5400
-Node: Starting and ending7180
-Ref: Starting & ending7315
-Node: Output files8492
-Ref: output files dvi8771
-Ref: output files pdf9283
-Ref: output files log9608
-Ref: output files aux9805
-Node: TeX engines10774
-Ref: tex engines latex11310
-Ref: tex engines lualatex12145
-Ref: tex engines xelatex12606
-Node: LaTeX command syntax14566
-Node: Environment16493
-Node: CTAN17720
-Node: Document classes19176
-Ref: document classes article19616
-Ref: document classes book19704
-Ref: document classes letter19889
-Ref: document classes report19965
-Ref: document classes slides20117
-Node: Document class options20570
-Node: Additional packages23652
-Node: Class and package construction24283
-Node: Class and package structure25733
-Node: Class and package commands28028
-Node: Fonts45633
-Ref: Typefaces45736
-Node: fontenc package47698
-Node: \DeclareFontEncoding51950
-Node: \DeclareTextAccent53370
-Node: \DeclareTextAccentDefault54289
-Node: \DeclareTextCommand & \ProvideTextCommand55364
-Node: \DeclareTextCommandDefault & \ProvideTextCommandDefault57616
-Node: \DeclareTextComposite58928
-Node: \DeclareTextCompositeCommand60013
-Node: \DeclareTextSymbol60695
-Node: \DeclareTextSymbolDefault61804
-Node: \LastDeclaredEncoding62764
-Node: \UseTextSymbol & \UseTextAccent63388
-Node: Font styles64598
-Node: Font sizes68828
-Node: Low-level font commands71707
-Ref: low level font commands fontencoding71991
-Ref: low level font commands fontfamily72547
-Ref: low level font commands fontseries73310
-Ref: low level font commands fontshape74442
-Ref: low level font commands fontsize74759
-Ref: low level font commands linespread75336
-Ref: low level font commands selectfont75617
-Ref: low level font commands usefont75943
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-Node: \twocolumn77111
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-Node: \raggedbottom82603
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-Ref: floats textfloatsep99392
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-Ref: floats dbltopnumber99764
-Ref: floats topnumber99883
-Ref: floats totalnumber99987
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-Node: \chapter110277
-Node: \section114050
-Node: \subsection117317
-Node: \subsubsection & \paragraph & \subparagraph120031
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-Node: \frontmatter & \mainmatter & \backmatter123981
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-Node: equation162746
-Node: figure163414
-Node: filecontents165587
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-Node: trivlist189570
-Node: math191098
-Node: minipage191404
-Node: picture197001
-Node: \put203231
-Node: \multiput203796
-Node: \qbezier204535
-Node: \graphpaper206008
-Node: \line206802
-Node: \linethickness208776
-Node: \thinlines209241
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-Node: \framebox (picture)215388
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-Node: \nocite248086
-Node: Using BibTeX248594
-Node: BibTeX error messages250974
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-Node: titlepage252801
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-Ref: units of length pc340440
-Ref: units of length in340463
-Ref: units of length bp340489
-Ref: units of length cm340620
+Node: Top1861
+Node: About this document3668
+Node: Overview5406
+Node: Starting and ending7186
+Ref: Starting & ending7321
+Node: Output files8498
+Ref: output files dvi8777
+Ref: output files pdf9289
+Ref: output files log9614
+Ref: output files aux9811
+Node: TeX engines10780
+Ref: tex engines latex11316
+Ref: tex engines lualatex12151
+Ref: tex engines xelatex12612
+Node: LaTeX command syntax14572
+Node: Environment16499
+Node: CTAN17726
+Node: Document classes19182
+Ref: document classes article19622
+Ref: document classes book19710
+Ref: document classes letter19895
+Ref: document classes report19971
+Ref: document classes slides20123
+Node: Document class options20576
+Node: Additional packages23658
+Node: Class and package construction24289
+Node: Class and package structure25739
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+Node: Fonts45639
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+Node: makeindex586784
+Ref: makeindex preamble588452
+Ref: makeindex postamble588598
+Ref: makeindex group skip588694
+Ref: makeindex letheadflag589034
+Ref: makeindex lethead prefix589495
+Ref: makeindex lethead suffix589647
+Ref: makeindex item 0589795
+Ref: makeindex item 1589875
+Ref: makeindex item 2589950
+Ref: makeindex item 01590028
+Ref: makeindex item x1590133
+Ref: makeindex item 12590338
+Ref: makeindex item x2590446
+Ref: makeindex delim 0590606
+Ref: makeindex delim 1590736
+Ref: makeindex delim 2590866
+Ref: makeindex delim n590992
+Ref: makeindex delim r591127
+Ref: makeindex line max591235
+Ref: makeindex indent space591370
+Ref: makeindex indent length591465
+Ref: makeindex page precedence591650
+Node: \printindex592687
+Node: Glossaries593160
+Node: \newglossaryentry595127
+Node: \gls596594
+Node: Letters597388
+Node: \address601006
+Node: \cc601817
+Node: \closing602259
+Node: \encl602573
+Node: \location602987
+Node: \makelabels603251
+Node: \name605568
+Node: \opening605809
+Node: \ps606090
+Node: \signature606379
+Node: \telephone607607
+Node: Input/output607972
+Node: \openin & \openout608702
+Node: \read611462
+Node: \typein612649
+Node: \typeout613909
+Node: \write614949
+Node: \write and security619676
+Node: \message620620
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+Node: \write18622950
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+Ref: Command line626605
+Node: Command line options628758
+Ref: interaction modes629761
+Ref: output directory630715
+Node: Command line input632414
+Node: Jobname634531
+Node: Recovering from errors637774
+Node: Document templates639202
+Node: beamer template639636
+Node: article template640278
+Node: book template640741
+Node: Larger book template641220
+Node: Index642762
+Ref: Command Index642848
 
 End Tag Table
 

Modified: trunk/latex2e.pdf
===================================================================
(Binary files differ)

Modified: trunk/latex2e.texi
===================================================================
--- trunk/latex2e.texi	2022-01-26 17:47:45 UTC (rev 1077)
+++ trunk/latex2e.texi	2022-01-26 18:12:17 UTC (rev 1078)
@@ -26,6 +26,8 @@
 @c xx JH something on code listings
 @c xx JH ligatures
 @c
+ at c xx \NewCommandCopy et al. (Brian Dunn, 21 Dec 2021 06:50:17).
+ at c
 @c xx The typeset source2e has an index with all kernel
 @c xx commands, though some are internal and shouldn't be included.
 @c xx classes.dtx et al. define additional commands.
@@ -52,7 +54,7 @@
 text was directly copied.)
 
 Copyright 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Karl Berry.@*
+2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 Karl Berry.@*
 Copyright 1988, 1994, 2007 Stephen Gilmore.@*
 Copyright 1994, 1995, 1996 Torsten Martinsen.
 
@@ -17414,7 +17416,7 @@
 
 Declare how to handle graphic files whose names end in @var{extension}.
 
-This example declares that all files the names of which have the form
+This example declares that all files with names of the form
 @file{filename-without-dot.mps} will be treated as output from MetaPost,
 meaning that the printer driver will use its MetaPost-handling code to
 input the file.
@@ -18074,7 +18076,7 @@
 The unstarred form @code{\resizebox} takes @var{vertical length} to be
 the box's height while the starred form @code{\resizebox*} takes it to
 be height+depth.  For instance, make the text have a height+depth of a
-quarter inch with @code{\resizebox*@{!@}@{0.25in@}@{\parbox@{3.5in@}@{This
+quarter-inch with @code{\resizebox*@{!@}@{0.25in@}@{\parbox@{3.5in@}@{This
 box has both height and depth.@}@}}.
 
 You can use @code{\depth}, @code{\height}, @code{\totalheight}, and



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