Get rid of math mode in some places.
diff --git a/Doc/mac/libmacspeech.tex b/Doc/mac/libmacspeech.tex
index d3b6e96..92c0541 100644
--- a/Doc/mac/libmacspeech.tex
+++ b/Doc/mac/libmacspeech.tex
@@ -45,7 +45,7 @@
\renewcommand{\indexsubitem}{(voice object method)}
\begin{funcdesc}{GetGender}{}
-Return the gender of the voice:\ 0 for male, 1 for female and $-1$ for neuter.
+Return the gender of the voice: 0 for male, 1 for female and -1 for neuter.
\end{funcdesc}
\begin{funcdesc}{NewChannel}{}
diff --git a/Doc/mac/libmactcp.tex b/Doc/mac/libmactcp.tex
index 4d6d5ba..a16afc8 100644
--- a/Doc/mac/libmactcp.tex
+++ b/Doc/mac/libmactcp.tex
@@ -164,7 +164,7 @@
\renewcommand{\indexsubitem}{(UDP stream method)}
\begin{funcdesc}{Read}{timeout}
-Read a datagram, waiting at most \var{timeout} seconds ($-1$ is
+Read a datagram, waiting at most \var{timeout} seconds (-1 is
infinite). Return the data.
\end{funcdesc}