+ <feature id="SketchCircle" title="Circle" tooltip="Create a new circle" icon="">
+ <point_selector id="CircleCenter" title="Center" tooltip="Center of the circle"/>
+ <doublevalue id="CircleRadius" label="Radius:" min="0" step="1.0" default="0" icon=":icons/radius.png" tooltip="Set Radius"/>
+ </feature>
+ <feature id="SketchArc" title="Arc" tooltip="Create a new arc of a circle" icon="">
+ <point_selector id="ArcCenter" title="Center" tooltip="Center of the arc"/>
+ <point_selector id="ArcStartPoint" title="Start point" tooltip="Start point of the arc"/>
+ <point_selector id="ArcEndPoint" title="End point" tooltip="End point of the arc"/>
+ </feature>