New section header style.

Fix up a few synopses.
diff --git a/Doc/lib/libaifc.tex b/Doc/lib/libaifc.tex
index d7433e7..76ff871 100644
--- a/Doc/lib/libaifc.tex
+++ b/Doc/lib/libaifc.tex
@@ -1,4 +1,5 @@
-\section{Standard Module \module{aifc}}
+\section{\module{aifc} ---
+         Read and write audio files in AIFF or AIFC format.}
 \declaremodule{standard}{aifc}
 
 \modulesynopsis{Read and write audio files in AIFF or AIFC format.}