\documentclass{article}
\usepackage{prereqsWeb}
\begin{document}
\begin{center}
\includegraphics*{chart.png}
\end{center}
\begin{center}
\begin{minipage}{4.0in}
\begin{itemize}
\item
A solid arrow \solidarrow\  indicates a required prerequisite, 
a dotted arrow \dottedarrow\ 
indicates a corequisite (to be taken before or concurrently), and a
dashed arrow \dashedarrow\ indicates a recommended prerequisite.
Core courses are in \boldbox\ boxes; 
other courses (i.e.,~options or prerequisites)
are in \lightbox\ boxes.
\item Timetabling abbreviations: M, T, W, Th, F=Mon, Tue, Wed, Thur, Fri, resp.; eve=7:00--9:50 pm; no=not offered.
\end{itemize}
\end{minipage}
\end{center}
\end{document}

