%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  1. Auflage
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%%  Beispiel 12-01-7 auf Seite 613.
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%%  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
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\documentclass[]{exaarticle2}
\pagestyle{empty}
\setlength\textwidth{190.324pt}
\StartShownPreambleCommands
\usepackage{fontspec}
\setmainfont{Linux Libertine O}
\StopShownPreambleCommands
\begin{document}
\addfontfeature{Numbers=OldStyle}
0123456789 $\rightarrow$
\addfontfeature{Numbers=Lining}%
0123456789
\end{document}