%% 
%%  Ein Beispiel der DANTE-Edition
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%%  2. Auflage
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%%  Beispiel 06-03-28 auf Seite 231.
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%%  Copyright (C) 2016 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
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\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{145.16928pt}
\setlength\parindent{0pt}
\AtBeginDocument{\setbox0\hbox{$ $}}
%StartShownPreambleCommands
\usepackage{blkarray}
%StopShownPreambleCommands
\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}