%% 
%%  Example 01-05-3 
%%  Copyright (C) 2017 Herbert Voss
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{screxa}
\pagestyle{empty}
\setlength\textwidth{158.31393pt}

%StartShownPreambleCommands

%StopShownPreambleCommands
\begin{document}
$\bordermatrix{%
   & 0 & 1 & 2 \cr
 0 & A & B & C \cr
 1 & d & e & f \cr
 2 & 1 & 2 & 3 \cr
}$
\end{document}
