%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  2. Auflage
%% 
%%  Beispiel 17-05-10 auf Seite 851.
%% 
%%  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
%% 
%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{145.16928pt}
\setlength\parindent{0pt}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
%StartShownPreambleCommands
\usepackage[log-declarations=false]{xparse}
\NewDocumentCommand\TYPdm{ d<> m }
  {#2 \IfValueTF{#1}{#1}{Berlin}}
%StopShownPreambleCommands
\begin{document}
\TYPdm{FU}\\ \TYPdm<München>{TU}\\ \TYPdm{TU}
\end{document}
