\section{Purpose and Conventions}

The Student Information Processing Board (SIPB) compiled
this document to provide a catalog of the less-publicized commands and
capabilities of the Athena system for people who have learned the
basics of Unix.  If you are a complete newcomer to the system, we
suggest that you begin with the Athena documents.  
These documents are available at Copy Tech in the basement of
building 11 or the Student Center.

File names throughout this document are indicated in
{\it italics}.  

Program names, commands to be typed to the shell, and
text that is returned by a command are in {\tt typewriter text}.

Document names are in {\tt typewriter text}.

Commands for GNU Emacs and other interactive programs are in {\bf boldface}.  

A C- prefix indicates Control character. For instance, C-x
means that you hold down the Control key and hit the ``x'' key. A M-
prefix indicates a Meta character, so for M-a you would hold down the
``Alt'' (or ``Compose Character'' on some keyboards) key and type ``a''.

If you have any questions, please feel free to ask us
by coming to the SIPB office (W20-575), emailing us
({\it sipb@mit.edu}), calling us (253-7788) or zephyring 
us (class ``sipb'', instance ``iathena'').