Add markup

Doc/lib/libbsddb.tex

@@ -12,7 +12,8 @@ library.  Users can create hash, btree or record based library files
 using the appropriate open call. Bsddb objects behave generally like
 dictionaries.  Keys and values must be strings, however, so to use
 other objects as keys or to store other kinds of objects the user must
-serialize them somehow, typically using marshal.dumps or pickle.dumps.
+serialize them somehow, typically using \function{marshal.dumps()} or 
+\function{pickle.dumps}.
 
 Starting with Python 2.3 the \module{bsddb} module requires the
 Berkeley DB library version 3.2 or later (it is known to work with 3.2