%%
%% The LaTeX Companion, 2ed (second printing August 2004)
%%
%% Example 2-2-17 on page 39.
%%
%% Copyright (C) 2004 Frank Mittelbach, Michel Goossens,
%%    Johannes Braams, David Carlisle, and Chris Rowley
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See http://www.latex-project.org/lppl.txt for details.
%%

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{159.0pt}

% the book normally uses Times fonts in the examples:
\renewcommand\rmdefault{cmr}

\StartShownPreambleCommands
\usepackage{titlesec}
\titleformat{\section}[runin]{\normalfont\scshape}
     {\S\,\oldstylenums{\thesection}.}{.5em}{}[.\quad]
\StopShownPreambleCommands
\begin{document}
\section{The Title}
The heading is separated from the section text by
a dot and a space of one quad.
\end{document}