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-rw-r--r--Master/texmf-dist/doc/latex/unicode-math/um-doc-main.tex20
1 files changed, 13 insertions, 7 deletions
diff --git a/Master/texmf-dist/doc/latex/unicode-math/um-doc-main.tex b/Master/texmf-dist/doc/latex/unicode-math/um-doc-main.tex
index 23d17472bb4..c6b8c96a077 100644
--- a/Master/texmf-dist/doc/latex/unicode-math/um-doc-main.tex
+++ b/Master/texmf-dist/doc/latex/unicode-math/um-doc-main.tex
@@ -75,7 +75,7 @@ their definitions. Here's an example using the filename syntax to load the \TeX\
Once the package is loaded, traditional TFM-based maths fonts are no longer supported;
you can only switch to a different OpenType maths font using the \cs{setmathfont} command.
-If you do not load an OpenType maths font before |\begin{document}|, Latin Modern Math (see above) will be loaded automatically.
+If you do not load an OpenType maths font before |\begin{document}|, Latin Modern Math will be loaded automatically.
\subsection{New commands}
\LaTeX, since the first version of \LaTeXe, changed the math group
@@ -86,7 +86,7 @@ with |\textbf|, |\textit| and so on, but with the precise purpose of
loading the needed math groups (or math families) on demand and not
allocating them if not required by the document.
-The introduction of \pkg{unicode-math} posed new problems. For
+The introduction of \pkg{unicode-math} posed some problems fitting into this design. For
instance, there is a big difference between say |fit| as an operator
name in boldface type and the product of three boldface variables.
With legacy \TeX{} engines, |\mathbf{fit}| would use a ligature and
@@ -178,6 +178,15 @@ commands should be preferred, as certain synonyms may become
deprecated in time. The |\symliteral| command is described in
\secref{math-style}.
+Using the |\sym..| commands, the glyphs used to produce PDF output are Unicode-encoded,
+and therefore a symbol such as $\symcal{G}$ can be copy-pasted into another programme
+(or even into the source of another \LaTeX\ document using \pkg{unicode-math}) without
+loss of meaning.
+This is an important aspect of Unicode mathematics, but the \pkg{unicode-math} package
+is not `pure' in the sense that the package also provides other mechanisms to change
+the fonts used in the PDF output; the philosophy of the package is to provide mechanisms
+for technical authors to invent and experiment with new syntaxes for their work.
+
\subsection{Package options}
Package options may be set when the package as loaded or at any later
@@ -705,17 +714,14 @@ and while by default \cs{mathcal} and \cs{mathscr}
are synonyms, there are some situations when a
separate `Caligraphic' style is needed as well.
-If a font contains alternate glyphs for a separat caligraphic style,
+If a font contains alternate glyphs for a separate caligraphic style,
they can be selected explicitly as shown below.
This feature is currently only supported by the XITS~Math font, where
the caligraphic letters are accessed with the same glyph slots as the
script letters but with the first stylistic set feature (|ss01|) applied.
-\begin{verbatim}
- \setmathfont{xits-math.otf}[range={cal,bfcal},StylisticSet=1]
-\end{verbatim}
An example is shown below.
\begin{quote}
-\setmathfont{xits-math.otf}[range=scr]
+\setmathfont{xits-math.otf}
\setmathfont{xits-math.otf}[range=cal,StylisticSet=1]
The Script style (\cs{mathscr}) in XITS Math is: $\symscr{ABCXYZ}$\par
The Caligraphic style (\cs{mathcal}) in XITS Math is: $\symcal{ABCXYZ}$