="font-style: italic;">hsv</span> color
set. The second object is
shown with the spring color set. Adding the<span style="color: rgb(204, 51, 204);"> 'log' </span>keyword to the options will use the log of the signal for the color scale, in order to enhance low signals.<br>

<h5><a class="mozTocH4" name="mozTocId676798"></a>Contextual menu</h5>
It is possible, by
right-clicking on the surface or the axis lines, to pop-up a contextual
menu which
provides the following operations:<br>
<ul>
  <li>an informatio