New section header style.

Fix up a few synopses.

Doc/lib/liboperator.tex

@@ -1,7 +1,7 @@
-% Contributed by Skip Montanaro, from the module's doc strings.
-
-\section{Built-in Module \module{operator}}
+\section{\module{operator} ---
+         Standard operators as functions.}
 \declaremodule{builtin}{operator}
+\sectionauthor{Skip Montanaro}{skip@automatrix.com}
 
 \modulesynopsis{All Python's standard operators as built-in functions.}
 
@@ -90,7 +90,7 @@ Return the outcome of \keyword{not} \var{o}.
 \end{funcdesc}
 
 \begin{funcdesc}{truth}{o}
-Return 1 if \var{o} is true, and 0 otherwise.
+Return \code{1} if \var{o} is true, and 0 otherwise.
 \end{funcdesc}
 
 \begin{funcdesc}{concat}{a, b}