\documentclass{article}
\special{papersize=58.42 mm,50.55 mm}
\usepackage{ketpic,ketlayer}
\usepackage{amsmath,amssymb}
\usepackage{graphicx,color}

\def\ketcindy{{K\kern-.20em%
\lower.5ex\hbox{E}\kern-.125em{TCindy}}}

\setmargin{0}{0}{0}{0}

\begin{document}

\begin{layer}{50}{0}
\putnotese{5}{2}{\input{s210diffeq2.tex}}

\end{layer}

\end{document}
