Adjusted to use the new module synopsis support macros.
diff --git a/Doc/lib/libmarshal.tex b/Doc/lib/libmarshal.tex
index 5878cfa..ab7cd05 100644
--- a/Doc/lib/libmarshal.tex
+++ b/Doc/lib/libmarshal.tex
@@ -1,6 +1,9 @@
\section{Built-in Module \module{marshal}}
-\label{module-marshal}
-\bimodindex{marshal}
+\declaremodule{builtin}{marshal}
+
+\modulesynopsis{Convert Python objects to streams of bytes and back (with
+different constraints).}
+
This module contains functions that can read and write Python
values in a binary format. The format is specific to Python, but