+ <feature id="SketchConstraintLength" title="Length of a line" tooltip="Create constraint for the given length of a line segment">
+ <label title="Select a line entity on which to calculate lenght" tooltip="Select a line entity on which to calculate lenght"/>
+ </feature>
+ <feature id="SketchConstraintRadius" title="Radius of a circle or an arc" tooltip="Create constraint for the given radius of a circle or an arc" internal="1"/>