<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"/>
<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"/>