if (myPresentationFigure != null) { myPresentationFigure.addDependendFigure(this); }
	public void setPresentationFigure(Figure newPresentationFigure) {		myPresentationFigure = newPresentationFigure;		if (myPresentationFigure != null) {			myPresentationFigure.addDependendFigure(this);		}	}