Markup nits.
diff --git a/Doc/lib/libmath.tex b/Doc/lib/libmath.tex
index 7addda4..0a45fb3 100644
--- a/Doc/lib/libmath.tex
+++ b/Doc/lib/libmath.tex
@@ -1,14 +1,11 @@
\section{\module{math} ---
- Mathematical functions (\function{sin()} etc.).}
+ Mathematical functions}
+
\declaremodule{builtin}{math}
-
-
\modulesynopsis{Mathematical functions (\function{sin()} etc.).}
-This module is always available.
-It provides access to the mathematical functions defined by the \C{}
-standard.
-They are:
+This module is always available. It provides access to the
+mathematical functions defined by the C standard. They are:
\begin{funcdesc}{acos}{x}
Return the arc cosine of \var{x}.
@@ -105,7 +102,7 @@
\end{funcdesc}
Note that \function{frexp()} and \function{modf()} have a different
-call/return pattern than their \C{} equivalents: they take a single
+call/return pattern than their C equivalents: they take a single
argument and return a pair of values, rather than returning their
second return value through an `output parameter' (there is no such
thing in Python).