\documentstyle[6.034-ps,marc,11pt]{article}
\pagestyle{empty}

\name{Marc Horowitz}
\recitation{\null}
\handout{3}
\handoutdate{September 14, 1990}
\psnum{1}
\duedate{Wed, September 19, 1990}

\begin{document}
\maketitle

\begin{verbatim}
(defun match-variable (p d bindings)
  ;; a variable always matches, so there is no failure case
  (add-binding p d bindings))
\end{verbatim}
\end{document}
