CTAN sync 202201110301

1 files changed, 86 insertions, 71 deletions

diff --git a/fonts/newtx/doc/newtxdoc.tex b/fonts/newtx/doc/newtxdoc.tex
index a16318beb0..f9e6e3123f 100644
--- a/fonts/newtx/doc/newtxdoc.tex
+++ b/fonts/newtx/doc/newtxdoc.tex
@@ -2,7 +2,9 @@
 \def\fsc{11pt}
 \documentclass[\fsc]{article} 
 \usepackage[margin=1in]{geometry} 
-\usepackage[parfill]{parskip}% Begin paragraphs with an empty line rather than an indent 
+\usepackage[parfill]{parskip}
+\pdfmapfile{=newtx.map}
+
 %\pdfcompresslevel=0
 %\pdfgentounicode=1
 %\input glyphtounicode.tex
@@ -82,7 +84,7 @@ Another important change took place in version 1.65, where  {\tt theoremfont} wa
 \item \verb|\pagestyle{headings}| now functions as intended with slanted rather than upright figures in the headers.
 \end{itemize}
 
-Version 1.7 adds the ability to process {\tt.tex} documents with all current LaTeX engines, adding {\tt fontspec} based macros as replacements for macros and options formerly defined for {\tt pdflatex} processing as needed for unicode latex processing. There are some new macros and options that work only under unicode LaTeX. The {\tt newtxtext} package is modified very substantially to work for all latex engines. Also introduced in 1.7 is {\tt newtx.sty}, which to some extent reduces the (human) memory requirements for loading {\tt newtxtext} and {\tt newtxmath} in a way that works with all LaTeX engines. With {\tt newtx}, the simplest invocation could be just
+Versions 1.7--1.704 add the ability to process {\tt.tex} documents with all current LaTeX engines, adding {\tt fontspec} based macros as replacements for macros and options formerly defined for {\tt pdflatex} processing as needed for unicode latex processing. A new option, {\tt thmslshape}, instructs {\tt theoremfont} to use slanted rather than italic shape, with upright punctuation, of course. There are some new macros and options that work only under unicode LaTeX. The {\tt newtxtext} package is modified very substantially to work for all latex engines. Also introduced in 1.7 is {\tt newtx.sty}, which to some extent reduces the (human) memory requirements for loading {\tt newtxtext} and {\tt newtxmath} in a way that works with all LaTeX engines. With {\tt newtx}, the simplest invocation could be just
 \begin{verbatim}
 \documentclass{article}
 \usepackage{newtx}
@@ -182,12 +184,12 @@ the new package is split into separate text and math packages that do not need t
 \item \verb|\coloneq| and \verb|\eqcolon| now point to the correct glyphs;
 \item The problem with the {\tt ogonek} accent  and tabular environments (bad definition of \verb|\k|) is fixed: (the definition of \verb|\k| is removed as of version 1.628, being no longer of use);
 \item The default encoding for \textsf{newtxtext} is now T$1$, but support is offered also for OT$1$ and LY$1$. As some add-on packages are available only in T$1$, that seems the best current choice.
-\item Sans serif is by default taken from TeXGyreHeros, and by default at 90\% of the scale factor (set by {\tt scaled}, default value {\tt1}). The option {\tt helvratio=.98} will change that to 98\%. (Option {\tt nohelv} prevents this, leaving {\tt cmss} as the default sans font.)
+\item Sans serif is by default taken from {\tt TeXGyreHeros}, and by default at 94\% (was 90\% prior to version 1.7) of the scale factor (set by {\tt scaled}, default value {\tt1}). The option {\tt helvratio=.98} will change that to 98\%. (Option {\tt nohelv} prevents loading {\tt TeXGyreHeros}, leaving {\tt cmss} as the default sans font.)
 \item Typewriter text is by default taken from {\tt ntxtt}. Option {\tt nott} prevents this, leaving {\tt cmtt} as the default typewriter font.
 \item \verb|\varkappa| $\varkappa$ has been moved from {\tt AMSb} to {\tt lettersA}, and is now accompanied by an upright form \verb|\upvarkappa| $\upvarkappa$ which behaves as it should when using the {\tt frenchmath} option.
 \end{itemize}
 \section{Text mode options}
-Beginning with version 1.4, the text font component of \textsf{newtx} is no longer dependent on the {\tt txfonts}, and is constructed entirely from \textsf{TeXGyre Termes} and some modifications thereof.
+Beginning with version 1.4, the text font component of \textsf{newtx} is no longer dependent on the {\tt txfonts}, and is constructed entirely from \textsf{TeXGyre Termes} and some modifications thereof
 
 The text mode environment invoked by
 \begin{verbatim}
@@ -197,11 +199,11 @@ has several options, a number new to version 1.4: you may write
 \begin{verbatim}
 \usepackage[scaled=.93]{newtxtext}
 \end{verbatim}
-to load the roman and typewriter text fonts at 93\% of normal size, and the sans serif (\textsf{Helvetica} clone) at scale $0.9*0.93$. This is not of much utility if the package is used with the math package {\tt newtxmath} to which it is already matched, but may be with other math packages. The options
+to load the roman and typewriter text fonts at 93\% of normal size, and the sans serif (\textsf{Helvetica} clone) at scale $0.94*0.93$ (was $0.9*0.93$ prior to version 1.7.) This is not of much utility if the package is used with the math package {\tt newtxmath} to which it is already matched, but may be with other math packages. The options
 \begin{verbatim}
 \usepackage[scaled=.95,helvratio=.96]{newtxtext}
 \end{verbatim}
-load roman and typewriter text fonts at 95\% of normal size, and the sans serif (\textsf{Helvetica} clone) at scale $0.95*0.96$.
+load roman and typewriter text fonts at 95\% of normal size, and the sans serif (\textsf{Helvetica} clone)  scaled $0.95*0.96$.
 
 The option \texttt{osf} instructs the text fonts to use old-style figures \oldstylenums{1234567890} rather than the default lining figures $1234567890$. As of version $1.23$, {\tt newtxtext} loads initially with lining figures so the math package uses lining figures in math mode. The option {\tt osf} changes the default to old-style figures in text at the very end of the preamble, forcing the use of old-style figures in text, but not math. In earlier versions, it was necessary to run 
 \verb|\useosf| after loading {\tt newtxmath}. This is no longer required. 
@@ -214,7 +216,7 @@ If you use the {\tt babel} package, you should load it before {\tt newtxtext}---
 \usepackage[<babel options>]{babel}
 \usepackage[osf]{newtxtext} % or newtx
 \end{verbatim}
-More generally, the pattern of the preamble should be:
+More generally, the pattern of the preamble for {\tt pdflatex} should be:
 \begin{verbatim}
 <encoding options>
 [optional] \usepackage{substitutefont} % so you can change babel's fonts
@@ -226,6 +228,8 @@ More generally, the pattern of the preamble should be:
 \usepackage{newtxmath}
 <substitutefont commands>
 \end{verbatim}
+Under unicode latex engines, parts of {\tt babel} processing such as {\tt babelfont} load {\tt fontspec}, which may conflict with the subsequent functioning of {\tt newtx/newtxtext} because of a fontspec options conflict. (This requires further study.)
+
 As an example of a {\tt theoremstyle} definition,
 \begin{verbatim}
 \usepackage[theoremfont]{newtxtext}
@@ -280,10 +284,16 @@ Option \texttt{largesc} changes the small cap glyphs from the default petite cap
 
 Option \texttt{adobesc} is only for those who own licenses for \textsf{Adobe Times Small Caps} and install them into the \texttt{ptmsc} package downloaded from \textsc{ctan}. This option loads \texttt{largesc} and substitutes the Adobe glyphs, where available, including their larger Regular and Bold tabular oldstyle figures.
 
-The {\tt theoremfont} option changes the default font used for the {\tt plain} theoremstyle of {\tt amsthm}, keeping italic text but substituting upright figures and punctuation, and, provided you have loaded {\tt amsthm} before {\tt newtxtext}, it will redefine the plain theoremstyle.  For example, with this option, you get theorem statements like this:
+The {\tt theoremfont} option changes the default font used for the {\tt plain} theoremstyle of {\tt amsthm}, keeping italic text but substituting upright figures and punctuation, and, provided you have loaded {\tt amsthm} before {\tt newtxtext}, it will redefine the plain theoremstyle.  As if version 1.704, you may specify slanted rather than italic for the body font of theorem statements by means of the option {\tt thmslshape}. 
+
+For example, with option {\tt theoremfont}, but no {\tt thmslshape}, you get theorem statements like this, with body font in italic with upright figures, punctuation and delimiters:
+%%\end{document}
 
+%\traceon
 \begin{thm}
-This is Theorem Italic: text numbers are upright---12345; punctuation is in many cases upright (also, parens, braces \{\} and brackets []). What about question marks and exclamations? Also upright! [These fit better with math mode punctuation and figures, like: for all $x\in[0,1]$, let $f(x)\coloneq \exp(\alpha x)$].
+This is Theorem Italic:
+%\traceoff 
+text numbers are upright---12345; punctuation is in many cases upright (also, parens, braces \{\} and brackets []). What about question marks and exclamations? Also upright! [These fit better with math mode punctuation and figures, like: for all $x\in[0,1]$, let $f(x)\coloneq \exp(\alpha x)$].
 \end{thm}
 Compare this to traditional {\tt plain} theoremstyle with the same text:
 \begin{oldthm}
@@ -313,7 +323,7 @@ If you want full control, the options {\tt spacing, stretch, shrink} allow you t
 \end{verbatim}
 
 \textbf{Behavior under XeLaTeX and LuaLaTeX.}\\
-Fontspec  offers the {\tt WordSpace=} option for individual control of the space, stretch and shrink, with the value being either an ordered triple like \verb|{1.1,1,.8}| or a single number like {\tt .9}, the latter having the same effect as the triple \verb|{.9,.9,.9}|. These three numbers act as multipliers of {\tt space}, {\tt stretch} and {\tt shrink}. The option that you can set is {\tt spcfactor=}, entering either a number or a triple---e.g., {\tt spcfactor=1.1} or \verb|{1.1,1,.8}|. Note however that {\tt tighter} and {\tt looser} will have an effect if {\tt spcfactor} is not set, amounting to \verb|{\spcfactor={1,.625,1}| and \verb|{\spcfactor={1.2,1,1}| respectively.
+Fontspec  offers the {\tt WordSpace=} option for individual control of the space, stretch and shrink, with the value being either an ordered triple like \verb|{1.1,1,.8}| or a single number like {\tt .9}, the latter having the same effect as the triple \verb|{.9,.9,.9}|. These three numbers act as multipliers of {\tt space}, {\tt stretch} and {\tt shrink}. The option that you can set is {\tt spcfactor=}, entering either a number or a triple---e.g., {\tt spcfactor=1.1} or \verb|{1.1,1,.8}|. Note however that {\tt tighter} and {\tt looser} will have an effect if {\tt spcfactor} is not set, amounting to \verb|\spcfactor={1,.625,1}| and \verb|\spcfactor={1.2,1,1}| respectively.
 
 
 \section{Usage with Lua\LaTeX\ and Xe\LaTeX}
@@ -575,6 +585,7 @@ requires  {\tt amsmath}---there is no need to load it separately.
 \begin{verbatim}
 ! LaTeX Error: Command \openbox already defined.
 \end{verbatim}
+As of version 1.7, it is simpler to provide {\tt amsthm} as an option to either {\tt newtx} or {\tt newtxmath}.
 \item {\tt uprightGreek} and {\tt slantedGreek} determine the form of Greek alphabet loaded---the default is {\tt uprightGreek}, which loads upright uppercase and slanted lowercase Greek symbols, as is customary in Anglo-American mathematical typesetting. With the option {\tt slantedGreek}, which you might want to use if you cared about ISO standards, all Greek symbols are slanted. No matter which is set, \verb|\Gammaup| (or \verb|\upGamma|) gives you upright \verb|\Gamma|, etc, and \verb|\Deltait|, \verb|\zetait| give you italic (i.e., slanted) versions of those letters. If you are using a text font family with properly constructed OT$1$--encoded versions, then, no matter what you chose as the default shape for upper case Greek letters, \verb|\mathnormal{\Omega}| etc will always produce the slanted version. (The macro \verb|\mathnormal| means essentially ``use the version of the symbol in {\tt letters}''---i.e., the math italic form. This did not always work as expected in versions prior to 1.45.) Currently, this works as expected with {\tt newtxtext} and {\tt libertine}. 
 \item Option {\tt frenchmath} sets the default style in math mode for rendering uppercase Roman and Greek letters to upright, and lowercase Greek letters to upright. (Introduced in v.\ 1.28.)
 \item The option {\tt cmbraces} instructs {\tt newtxmath} to ignore the brace collections from {\tt txfonts}, substituting a collection based on thickened versions of the Computer Modern braces, which I find much easier to distinguish from other delimiters. This works quite well in regular weight but looks a bit clunky in bold. The option {\tt bigdelims}, which superseded {\tt cmbraces}, is now not necessary---it is the default as of version 1.5.
@@ -583,13 +594,14 @@ requires  {\tt amsmath}---there is no need to load it separately.
 \item The \textsf{newtxmath} package contains three different Blackboard Bold alphabets, where the original \textsf{txfonts} contained two. The default, triggered by \verb|\mathbb{}|, takes its glyphs from the font which replaces {\tt msbm} and has the same overall appearance of a hollowed-out text font, which I find neither bold nor blackboard-like. The second option, taken from \textsf{txfonts}, is triggered by \verb|\varmathbb{}|, is more geometric and, in my opinion, preferable but not optimal. The option {\tt varbb} makes \verb|\mathbb{}| synonymous with \verb|\varmathbb{}|. The third option is the double-struck glyphs from the STIX collection. See the expanded discussion below.
 \item {\tt noOT1} affects only those text-math combinations where {\tt operators} is defined by default to OT1 with Greek uppercase letters. It causes {\tt operators} to keep the same encoding as in tex, allowing operatornames to use accented characters, but possibly losing some calls for Greek uppercase.
 \item {\tt nosymbolsc} causes the package to not load the {\tt symbolsC} fonts, saving  a math family. (This font contains mostly exotic symbols, along with some very useful, commonly used symbols like \verb|\coloneq| $\coloneq$, \verb|\eqcolon| $\eqcolon$, \verb|\notin| $\notin$, \verb|\notni| $\notni$, \verb|\neq| $\neq$, \verb|\nsubset| $\nsubset$ and \verb|\nsupset| $\nsupset$, but these have been moved (virtually) to {\tt lettersA} so they may continue to be used even if you use the option {\tt nosymbolsc}.) If this option is selected, then, as of version 1.53, new definitions are made for the missing negated symbols. The package {\tt centernot} is now required.
-\item {\tt amssymbols} (the default) and {\tt noamssymbols} determine whether the {\tt txfonts} versions of the \textsc{ams} symbols ({\tt AMSm}) are loaded---if so, they override previous settings in {\tt amsmath}. If you use the option {\tt noamssymbols}, then \verb|\mathbb{}| is set to mean the same as \verb|\varmathbb{}|. (One advantage of {\tt noamssymbols} is that you save two of your precious math families for other purposes, such as setting a couple of external math alphabets by means of the \textsf{mathalfa} package.) \textbf{Important note:} if you load an AMS class, like {\tt amsart}, then some trickery will be involved. The AMS classes have an option, {\tt noamsfonts} which currently (2017) does not work as advertised, but is fixed in \TeX Live 2018. It is supposed to prevent the loading of {\tt AMSa} and {\tt AMSb}, which waste two slots. The following workaround seems like a reasonable stopgap until then.
-\begin{verbatim}
-\def\symAMSb{5}
-\documentclass[noamsfonts]{amsart} %or other AMS classes
-\let\symAMSb\@undefined
-\end{verbatim}
-This method of loading the AMS class will save you two slots.
+%\item {\tt amssymbols} (the default) and {\tt noamssymbols} determine whether the {\tt txfonts} versions of the \textsc{ams} symbols ({\tt AMSm}) are loaded---if so, they override previous settings in {\tt amsmath}. If you use the option {\tt noamssymbols}, then \verb|\mathbb{}| is set to mean the same as \verb|\varmathbb{}|. (One advantage of {\tt noamssymbols} is that you save two of your precious math families for other purposes, such as setting a couple of external math alphabets by means of the \textsf{mathalfa} package.) \textbf{Important note:} if you load an AMS class, like {\tt amsart}, then some trickery will be involved. From 2018 onward, the AMS classes {\tt noamsfonts}  prevents the loading of {\tt AMSa} and {\tt AMSb}, which waste two slots. 
+%The following workaround seems like a reasonable stopgap until then.
+%\begin{verbatim}
+%\def\symAMSb{5}
+%\documentclass[noamsfonts]{amsart} %or other AMS classes
+%\let\symAMSb\@undefined
+%\end{verbatim}
+%This method of loading the AMS class will save you two slots.
 \item {\tt libaltvw} has effect only if the libertine option is selected---in this case, it substitutes for math italic v and w hand-crafted versions based on the Libertine upsilon glyphs.
 \item{\tt bigdelims} loads a different math extension font and redefines most of the small and big math delimiters to have larger sizes so that, for example, there is more of a distinction between \verb|(| and \verb|\big(| in math mode. If this option is specified, {\tt cmbraces} is ignored. (This option is unnecessary, as of version 1.5.)
 \item{\tt liby} has an effect only if the libertine option is selected---with this option, the math italic y is chosen to be Libertine's italic y instead of the default one from txfonts.
@@ -658,60 +670,60 @@ so that \verb|\BIA| works as expected in all math styles (display, text, script,
 \end{verbatim}
 
 \textbf{Caution:} If your text font lacks an {\tt OT1} encoded version with uppercase Greek, \verb|\mathrm| and \verb|\mathit| applied to Greek letters won't give you what you expect.
-\section{Usage with Lua\LaTeX\ and Xe\LaTeX}
-As far as I can tell, \textsf{newtxmath} works with both, but requires a very specific loading order and choice of options. Briefly, except for {\tt libertine} text, the math options must all be loaded prior to loading and using {\tt fontspec}. Be aware that some text packages (eg, {\tt cabin}) may contain a line like
-\begin{verbatim}
-\RequirePackage{fontspec}
-\end{verbatim}
-which would prevent (``option clash'' error) a subsequent 
-\begin{verbatim}
-\usepackage[no-math]{fontspec}
-\end{verbatim}
-unless suppressed by an appropriate option. E.g., 
-\begin{verbatim}
-\usepackage[type1]{cabin}
-\end{verbatim}
-prevents the problem with the {\tt cabin} package.
-
-The following examples illustrate some general models, the most unintuitive being the first because it loads a small version, {\tt minlibertine}, of libertine text for use in math mode as numbers, basic symbols and operators.
-
-\textsc{Example 3:}
-\begin{verbatim}
-%load text components other than libertine text to be used in math
-\usepackage[T1]{fontenc}
-\usepackage[scaled=.85]{beramono}% used only by \mathtt
-\usepackage[type1]{cabin}% used only for \mathsf
-\usepackage{amsmath}% must be loaded before amsthm, if using
-\usepackage{amsthm}% must be loaded before newtxmath
-\usepackage[libertine]{newtxmath}
-% loads minlibertine because no other Roman text package was specified
-% so that \mathrm and \mathbf also use minlibertine
-\usepackage[scr=rsfso]{mathalfa}
-\usepackage{bm}% load after all math to give access to bold math
-%Now load the otf text fonts using fontspec---won't affect math
-\usepackage[no-math]{fontspec} % process with XeLaTeX or LuaLaTeX
-\usepackage{libertine}
-%\usepackage[osf,semibold]{libertine} for osf in text, semibold as bold
-\end{verbatim}
-The next example is similar, but in math mode, numbers, basic symbols, operator names, \verb|\mathrm| and \verb|\mathbf| will render with {\tt fbb-LF}, though  math italic and math Greek letters will be from {\tt libertine}. (Note that one specifies the encoding and redefines \verb|\rmdefault|. For reasons I don't yet understand, it may not work to load the font package---i.e., don't substitute \verb|\usepackage{fbb}|, as that will mess up bold in the libertine text package.) 
-
-\textsc{Example 4:}
-\begin{verbatim}
-%load text components other than libertine text to be used in math
-\usepackage[T1]{fontenc}
-\renewcommand{\rmdefault}{fbb-LF}% Roman font for use in math mode
-\usepackage[scaled=.85]{beramono}% used only by \mathtt
-\usepackage[type1]{cabin}% used only by \mathsf
-\usepackage{amsmath}% must be loaded before amsthm, if using
-\usepackage{amsthm}% load before newtxmath
-\usepackage[libertine,vvarbb]{newtxmath}
-% does not load minlibertine because another Roman text package was specified
-\usepackage[scr=rsfso]{mathalfa}
-\usepackage{bm}% load after all math to give access to bold math
-%Now load the otf text fonts using fontspec---won't affect math
-\usepackage[no-math]{fontspec} % process with XeLaTeX or LuaLaTeX
-\usepackage{libertine}
-\end{verbatim}
+%\section{Usage with Lua\LaTeX\ and Xe\LaTeX}
+%As far as I can tell, \textsf{newtxmath} works with both, but requires a very specific loading order and choice of options. Briefly, except for {\tt libertine} text, the math options must all be loaded prior to loading and using {\tt fontspec}. Be aware that some text packages (eg, {\tt cabin}) may contain a line like
+%\begin{verbatim}
+%\RequirePackage{fontspec}
+%\end{verbatim}
+%which would prevent (``option clash'' error) a subsequent 
+%\begin{verbatim}
+%\usepackage[no-math]{fontspec}
+%\end{verbatim}
+%unless suppressed by an appropriate option. E.g., 
+%\begin{verbatim}
+%\usepackage[type1]{cabin}
+%\end{verbatim}
+%prevents the problem with the {\tt cabin} package.
+%
+%The following examples illustrate some general models, the most unintuitive being the first because it loads a small version, {\tt minlibertine}, of libertine text for use in math mode as numbers, basic symbols and operators.
+%
+%\textsc{Example 3:}
+%\begin{verbatim}
+%%load text components other than libertine text to be used in math
+%\usepackage[T1]{fontenc}
+%\usepackage[scaled=.85]{beramono}% used only by \mathtt
+%\usepackage[type1]{cabin}% used only for \mathsf
+%\usepackage{amsmath}% must be loaded before amsthm, if using
+%\usepackage{amsthm}% must be loaded before newtxmath
+%\usepackage[libertine]{newtxmath}
+%% loads minlibertine because no other Roman text package was specified
+%% so that \mathrm and \mathbf also use minlibertine
+%\usepackage[scr=rsfso]{mathalfa}
+%\usepackage{bm}% load after all math to give access to bold math
+%%Now load the otf text fonts using fontspec---won't affect math
+%\usepackage[no-math]{fontspec} % process with XeLaTeX or LuaLaTeX
+%\usepackage{libertine}
+%%\usepackage[osf,semibold]{libertine} for osf in text, semibold as bold
+%\end{verbatim}
+%The next example is similar, but in math mode, numbers, basic symbols, operator names, \verb|\mathrm| and \verb|\mathbf| will render with {\tt fbb-LF}, though  math italic and math Greek letters will be from {\tt libertine}. (Note that one specifies the encoding and redefines \verb|\rmdefault|. For reasons I don't yet understand, it may not work to load the font package---i.e., don't substitute \verb|\usepackage{fbb}|, as that will mess up bold in the libertine text package.) 
+%
+%\textsc{Example 4:}
+%\begin{verbatim}
+%%load text components other than libertine text to be used in math
+%\usepackage[T1]{fontenc}
+%\renewcommand{\rmdefault}{fbb-LF}% Roman font for use in math mode
+%\usepackage[scaled=.85]{beramono}% used only by \mathtt
+%\usepackage[type1]{cabin}% used only by \mathsf
+%\usepackage{amsmath}% must be loaded before amsthm, if using
+%\usepackage{amsthm}% load before newtxmath
+%\usepackage[libertine,vvarbb]{newtxmath}
+%% does not load minlibertine because another Roman text package was specified
+%\usepackage[scr=rsfso]{mathalfa}
+%\usepackage{bm}% load after all math to give access to bold math
+%%Now load the otf text fonts using fontspec---won't affect math
+%\usepackage[no-math]{fontspec} % process with XeLaTeX or LuaLaTeX
+%\usepackage{libertine}
+%\end{verbatim}
 
 
 \section{Alternate forms of glyphs}
@@ -744,6 +756,8 @@ The {\tt newtxmath} package now contains a \verb|\RequirePackage{amsmath}|, as i
 \usepackage{amsthm}
 \usepackage{newtxmath}
 \end{verbatim}
+As of version 1.7, it is easier to pass {\tt amsthm} as an option to either {\tt newtxmath} or {\tt newtx}.
+
 To pass options to {\tt amsmath}, you can pass the options as options to \verb|\documentclass|. For example,
 \begin{verbatim}
 \documentclass[11pt,intlimits]{article}
@@ -787,6 +801,7 @@ The {\tt operators} font is essentially the Roman text font, used for names of o
 \item same with, eg, \verb|\mathit|;
 \item same with an external Fraktur, Blackboard Bold or Script glyphs;
 \item if you run out of math alphabets, look first to dropping {\tt AMSm}  as well as {\tt symbolsC}, which can save you at least two slots;
+\item the {\tt bm} package can cost you several slots, even if you make no use of the bold families it adds;
 \item if space is tight, do not call bold versions of the fonts listed above where the bold version is not already loaded, to avoid loading a new mathgroup; 
 \item if you absolutely need a letter (not a math symbol) from some math font that would normally cost you another mathgroup, you might consider using as if it were text, with something like
 \begin{verbatim}