>Figure 3-1: Flow
of <b>pic</b> data</p>

<p style="margin-top: 1em">This was produced from the
following <b>pic</b> program:</p>

<pre style="margin-left:10%; margin-top: 1em">.PS
ellipse &quot;document&quot;;
arrow;
box width 0.6 &quot;\fIpic\/\fP(1)&quot;
arrow;
box width 1.1 &quot;\fIgtbl\/\fP(1) or \fIgeqn\/\fP(1)&quot; &quot;(optional)&quot; dashed;
arrow;
box width 0.6 &quot;\fIgtroff\/\fP(1)&quot;;
arrow;
ellipse &quot;PostScript&quot;
.PE</pre>


<p style="margin-top: 1em">This little program illus