%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  2. Auflage
%% 
%%  Beispiel 05-02-7 auf Seite 122.
%% 
%%  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) 1,2,3,4
%% 
%% 
\documentclass[headinclude,footinclude,twoside,parskip=full,pagesize]{screxa}
\pagestyle{empty}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\paperheight=11cm\areaset{\textwidth}{10cm}
\usepackage{blindtext}
%StartShownPreambleCommands
\documentclass{twoside,parskip=full,pagesize}
\usepackage{scrlayer-scrpage}
\addtolength\headheight{\normalbaselineskip}
\renewcommand\sectionmark[1]{\markboth{#1}{}}
\renewcommand\subsectionmark[1]{\markright{#1}}
\ohead{\leftmark\\\rightmark}
%StopShownPreambleCommands
\begin{document}
\section{Einführung}                        \blindtext\newpage
\subsection{Seitenstil \texttt{scrheadings}}\blindtext\newpage
\section{Mittlerer Abschnitt}\blindtext\newpage
\subsection{Letzter Abschnitt}\blindtext
\end{document}