*/
virtual bool addEmptyDiff();
+public: // TODO: remove public
Handle_AIS_Point getAISPoint( int theISection, int theIPoint ) const;
Handle_AIS_Line getAISLine( int theISection, int theIPoint1, int theIPoint2 ) const;
-public: // TODO: remove public
void getCoordinates( int theISection, int theIPoint, double& theX, double& theY, double& theZ ) const;
protected: // TODO: remove public
void redisplayCurve();