+ virtual QRectF Extents(void);
+ virtual void Enumerate(FILE *);
+ virtual Object * Copy(void);
+ virtual void Rotate(Point, double);
+ virtual void RotateSelected(Point, double);
+ virtual void Mirror(Point, Point);
+ virtual void MirrorSelected(Point, Point);
+ virtual void Save(void);
+ virtual void Restore(void);
+ void Delete(Object *);
+ void DeleteSelectedItems(void);