ents of a file that can be passed
directly to Xmaxima is the following:
</p>
<pre class="example">plot2d -xfun &quot;sin(A*x);cos(x)&quot; -yradius 10
       -sliders {A=1:6} -parameters {A=1}
</pre>
<p>that file will generate a plot of a cosine function with fixed period,
and a sine function with a period that can be changed by moving the
slider that appears on the bottom.
</p>
<p><div class="image"><img src="./figures/sliders.gif" alt="figures/sliders"></div>
</p>
<p>the sliders option of openmath is one 