New section header style.

Fix up a few synopses.

Doc/lib/libstdwin.tex

@@ -14,7 +14,8 @@ of dialogs.  For most platforms, alternative, native solutions exist
 under X11, Win32 for Windows and Windows NT, and a collection of
 native toolkit interfaces for the Macintosh.
 
-\section{Built-in Module \module{stdwin}}
+\section{\module{stdwin} ---
+         None}
 \declaremodule{builtin}{stdwin}
 
 \modulesynopsis{None}
@@ -777,7 +778,8 @@ def main():
 main()
 \end{verbatim}
 %
-\section{Standard Module \module{stdwinevents}}
+\section{\module{stdwinevents} ---
+         None}
 \declaremodule{standard}{stdwinevents}
 
 \modulesynopsis{None}
@@ -794,7 +796,8 @@ Suggested usage is
 >>> 
 \end{verbatim}
 %
-\section{Standard Module \module{rect}}
+\section{\module{rect} ---
+         None}
 \declaremodule{standard}{rect}
 
 \modulesynopsis{None}