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{\bf Massachusetts Institute of Technology \\
Department of Electrical Engineering and Computer Science}
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{\Huge\bf DON'T PANIC}
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{\Large\bf A 6.001 User's Guide \\
to the Chipmunk System} \\
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{\large Fall Semester, 1991}
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{\small
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by Arthur A. Gleckler, \\
with contributions by \\
Hal Abelson, Jonathan Rees, \\
and a cast of thousands
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}
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This manual is an introduction to the Scheme system on the
Hewlett-Packard 9836 computer (the ``Chipmunk'') for students taking
6.001---{\em Structure and Interpretation of Computer Programs}.

We strongly suggest that you glance through this manual at the
beginning of the semester in order to get a general overview of the
system.  A little time spent learning the basics will save you {\em
hours} working on problem sets.  Bring the manual with you for
reference while you work on 6.001 computer assignments.

First, read chapter~\ref{overview}---this describes the setup of the
Scheme system on the Chipmunk.  Chapter~\ref{edwin} describes Edwin,
the program editor.  Most of the editor commands are the same as those
in Emacs on Project Athena.  Chapter~\ref{debugging} describes the
special Scheme software for finding and correcting errors in your
programs.  Read the introduction to that chapter now, but postpone
reading the rest until later in the semester.  Chapter~\ref{scmref} is
a Scheme reference manual; use it when you need detailed information
about the operation of Scheme, particularly its built-in procedures.

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{\huge\bf Important}
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\noindent
{\Large\bf Do not turn off a 6.001 computer!} There is a good chance
that you will blow a circuit breaker in the lab, wiping out other
people's work on other Chipmunks.  If your computer seems stuck, do
{\it not} try to fix things by turning the machine off and back on.

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{\Large\bf Be sure to log out} when you are through using the computer.
Logging out ensures that the work you have done is saved on your floppy disk,
and prepares the Chipmunk for the next person who will use it.

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