* The CurveCreator_Curve object is represented as one or more sets of
* connected points; thus CurveCreator_Curve object can contain several
* not connected curves (polylines or b-splines), each such curve has two
* The CurveCreator_Curve object is represented as one or more sets of
* connected points; thus CurveCreator_Curve object can contain several
* not connected curves (polylines or b-splines), each such curve has two