<li>In this dialog:
<ul>
-<li>select the type of elements which will be extruded (1D or 2D),</li>
+<li>select the type of elements which will be extruded (0D, 1D or 2D),</li>
<li>specify the IDs of the elements which will be extruded:
<ul>
<li><b>Select the whole mesh, submesh or group</b> activating this
