\documentclass{article} \usepackage{german} \begin{document} \newsavebox{\warning} \sbox{\warning}{\setlength{\fboxrule}{0.25mm}\setlength{\fboxsep}{1.5mm}% \fbox{\parbox{10cm}{\large Vertical placement of minipages and parboxes can lead to surprising results which may be corrected by the use of dummy lines.}}} \begin{center} \usebox{\warning} \end{center} \end{document}