Adjusted to use the new module synopsis support macros.
diff --git a/Doc/lib/libgdbm.tex b/Doc/lib/libgdbm.tex
index 8f2d7d1..844c3b3 100644
--- a/Doc/lib/libgdbm.tex
+++ b/Doc/lib/libgdbm.tex
@@ -1,6 +1,8 @@
\section{Built-in Module \module{gdbm}}
-\label{module-gdbm}
-\bimodindex{gdbm}
+\declaremodule{builtin}{gdbm}
+
+\modulesynopsis{GNU's reinterpretation of dbm.}
+
% Note that if this section appears on the same page as the first
% paragraph of the dbm module section, makeindex will produce the