/* Copyright 2000 Charles G. Wright
 * This software may be distributed under the terms of the
 * GNU General Public License.
 *
 * $Id: GRAgraph.java,v 1.1 2000-06-15 10:14:55-05 chuckles Exp chuckles $
 */

import java.util.*;
import java.awt.*;

abstract class GRAgraph extends Panel implements Observer {

  abstract public void update(Observable obs, Object arg);
}