<ol>
<li>Display your mesh in the viewer.</li>
-<li>Choose <b>Controls > Volume</b> or click <em>"Volume"</em> button
-in the toolbar.
+<li>Choose <b>Controls > Volume Controls > Volume</b> or click
+<em>"Volume"</em> button in the toolbar.
\image html image145.png
<center><em>"Volume" button</em></center>