Constructor

      09         A   B   C   D   E   F   G   H   I // class Node continued

	Node(	int x, int y,
		int width, int height,
		int radius,
		boolean selected,
		String caption) {

	x0 = x; y0 = y;
	w = width; h = height;
	r = radius;
	s = selected;
	c = caption;
	} //Node