<feature id="Extrusion" title="Extrusion" tooltip="Create a solid by extrusion of a face" icon=":icons/extrusion.png">
<source path="extrusion_widget.xml"/>
</feature>
+ <feature id="Revolution" title="Revolution" tooltip="Create a solid by revolution of a face" icon=":icons/revol.png">
+ <source path="revolution_widget.xml"/>
+ </feature>
<feature id="Boolean" title="Boolean" tooltip="Perform boolean operations with solids" icon=":icons/cut.png">
<source path="boolean_widget.xml"/>
</feature>