% wormux particle
% felix salfelder 2007

\documentclass[twoside,10pt]{article}
\usepackage{a4}
\usepackage{amsmath, amssymb}
\usepackage[isolatin]{inputenc}
\usepackage{german}

%%%%%%%%%%%
\pagestyle{empty}

\begin{document}

\begin{huge}$\square$\end{huge}

\end{document}