public boolean within(int x0, int y0, int x1, int y1) {
		boolean test = false;
		if (test || m_test) {
			System.out.println("Coordinate :: within() BEGIN");
		}
		// x1/y1 are right-open

		if (test || m_test) {
			System.out.println("Coordinate :: within() END");
		}
		return ((m_X >= x0) && (m_Y >= y0) && (m_X < x1) && (m_Y < y1));
	}