package ballWorlds;

/**
 * A World contains Balls and can do things on behalf of those Balls (and other
 * objects). It is both a BallManager (which allows Balls to be added or
 * removed) and a WorldDescriber (i.e., it can return information about itself).
 * Every Ball should belong to at least one World.
 * 
 * 
 * @author David Mutchler, Salman Azhar, Curt Clifton and others, January 2005.
 *         Modified September 2008, September 2009.
 */
public interface World extends BallManager, WorldDescriber {
	// Nothing to see here: a World is simply the union of its parent
	// interfaces.
}