%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  1. Auflage
%% 
%%  Beispiel 05-03-4 auf Seite 140.
%% 
%%  Copyright (C) 2011 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) 1,2
%% 
%% 
\documentclass[ngerman,paper=a6,DIV=15,pagesize,numbers=noenddot,toc=flat]{screxa}
\pagestyle{empty}
\usepackage{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\setlength{\parindent}{0em}
\makeatletter
\newcounter {subsubsubsection}[subsubsection]
\newcounter {subsubparagraph}[subparagraph]
\@addtoreset{section}{part}
\@addtoreset{paragraph}{subsubsubsection}
\renewcommand\thepart            {\arabic{part}. Teil}%                 1. Teil
\renewcommand\thesection         {§ \arabic{part}\ \Alph{section}.}%    § 1 A.
\renewcommand\thesubsection      {\Roman{subsection}.}%                 I.
\renewcommand\thesubsubsection   {\arabic{subsubsection}.}%             1.
\renewcommand\thesubsubsubsection{\alph{subsubsubsection})}%            a)
\renewcommand\theparagraph       {\alph{subsubsubsection}\alph{paragraph})}%aa)
\renewcommand\thesubparagraph    {(\arabic{subparagraph})}%             (1)
\renewcommand\thesubsubparagraph {(\alph{subsubparagraph})}%            (a)
\renewcommand\part{\@startsection{part}{0}{0pt}%
                                 {-3.5ex plus -1ex minus -.2ex}%
                                 {2.3ex plus.2ex}%
                                 {\normalfont\LARGE\bfseries}}
\newcommand\subsubsubsection{\@startsection{subsubsubsection}{4}{0pt}%
                                 {-3.25ex plus -1ex minus -.2ex}%
                                 {1.5ex plus .2ex}%
                                 {\normalfont\normalsize\bfseries}}
\renewcommand\paragraph{\@startsection{paragraph}{5}{0pt}%
                                 {-3.25ex plus-1ex minus-.2ex}%
                                 {1.25ex plus .1ex}%
                                 {\normalfont\normalsize\bfseries}}
\renewcommand\subparagraph{\@startsection{subparagraph}{6}{0pt}%
                                 {-3.25ex plus-1ex minus-.2ex}%
                                 {1.25ex plus .1ex}%
                                 {\normalfont\normalsize\bfseries}}
\newcommand\subsubparagraph{\@startsection{subsubparagraph}{7}{0pt}%
                                 {-3.25ex plus-1ex minus-.2ex}%
                                 {1.25ex plus .1ex}%
                                 {\normalfont\normalsize\bfseries}}
\setcounter{secnumdepth}{8}
\setcounter{tocdepth}{8}
\renewcommand*\l@part{\@dottedtocline{0}{0pt}{3em}}% Ebene|Einzug|Labelbreite
\renewcommand*\l@section{\@dottedtocline{1}{0pt}{3em}}% Ebene|Einzug|Labelbreite
\newcommand*\l@subsubsubsection{\@dottedtocline{3}{3.8em}{3.2em}}
\newcommand*\l@subsubparagraph{\@dottedtocline{5}{10em}{5em}}
\let\partmark\@gobble % Damit keine doppelte Ausgabe erfolgt
\let\subsubsubsectionmark\@gobble % "
\let\subsubparagraphmark\@gobble % "
\makeatother
\StartShownPreambleCommands
\documentclass[ngerman,paper=a6,DIV=15,pagesize,numbers=noenddot]{scrartcl}
\StopShownPreambleCommands
\begin{document}
\tableofcontents \newpage
\part{Die Oberste Ebene}
\section{Überschrift mit section}      \section{Noch eine}
\subsection{Überschrift mit subsection}\subsection{Noch eine}
\subsubsection{Überschrift mit subsubsection}\subsubsection{Noch eine}
\subsubsubsection{Überschrift mit subsubsubsection}
\paragraph{Überschrift mit paragraph}      \paragraph{Noch einer}
\subparagraph{Überschrift mit subparagraph}\subparagraph{Noch einer}
\subsubparagraph{Überschrift mit subsubparagraph}\subsubparagraph{Noch einer}
\end{document}