%%
%% The LaTeX Companion, 2ed (second printing August 2004)
%%
%% Example 2-2-18 on page 40.
%%
%% 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}
\StartShownPreambleCommands
\usepackage{titlesec}
\titleformat{\section}[frame]{\normalfont}
    {\footnotesize \enspace SECTION \thesection
     \enspace}{6pt}{\large\bfseries\filcenter}
\titlespacing*{\section}{1pc}{*4}{*2.3}[1pc]
\StopShownPreambleCommands
\begin{document}
\ldots some text before \ldots
\section{A Title Test}
Some text to prove that this paragraph is not indented
and that the title has a margin of 1pc on either side.
\end{document}