tion.  User-defined functions and variables can have
names which are lower or upper case or both.  <tt>foo(XY)</tt>, <tt>
  Foo(Xy)</tt>, <tt>FOO(xy)</tt> are all different.

<div class="p"><!----></div>
 <h2><a name="tth_sEc2">
2</a>&nbsp;&nbsp;Special keys and symbols <a name="sec:keys">
</a></h2>

<div class="p"><!----></div>

<ol type="1">
<li> To end a Maxima session, type <tt>quit();</tt>.
<div class="p"><!----></div>
</li>

<li> To abort a computation without leaving Maxima, type <tt>^C</tt>.
(Here <