%% 
%%  A DANTE-Edition example
%% 
%%  Example 01-01-7 on page 7.
%% 
%%  Copyright (C) 2010 Herbert Voss
%% 
%%  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.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}
\usepackage[utf8]{inputenc}
\newcommand\Lcs[1]{\texttt{\textbackslash#1}}



\begin{document}
\begin{tabular}{|l|||p{4cm}|r||}\hline
 left & p--column & right\\
    \hline\hline\hline
 A     &  Now this column has a fixed width
          and a \Lcs{\newline}\newline
          creates a new row in
          this column & B \\\hline\hline
     1 &  2         & 3 \\\hline\hline
\end{tabular}
\end{document}