%% 
%%  A DANTE-Edition example
%% 
%%  Beispiel 02-04-10 auf Seite 42.
%% 
%%  Copyright (C) 2010 H. 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.
%% 

%%Run also: >>  << 
% Show page(s) 1

\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{170.59192pt}
\setlength\parindent{0pt}
\AtBeginDocument{\setbox0\hbox{$ $}}

\usepackage{blkarray}

\begin{document}
\begin{blockarray}{||c||c|cc||cc||}
   \BAhhline{|t:=:t:=| <<# <<:t|}
 0 & 1 & 2 & 3 & 4 & 5\\\BAhline
 0 & 1 & 2 & 3 & 4 & 5\\\BAhline\BAhline
 0 & 1 & 2 & 3 & 4 & 5\\\BAhhline{||-||-..||.-}
 0 & 1 & 2 & 3 & 4 & 5\\\BAhhline{=::=""::"=}
 0 & 1 & 2 & 3 & 4 & 5\\\BAhhline{|b:=:b:=""::"=:b|}
\end{blockarray}
\end{document}