package ergo.ui;
// $Id: Command.java,v 1.3 1999/08/27 03:07:55 sigue Exp $
/*
* Copyright (C) 1999 Carl L. Gay and Antranig M. Basman.
* See the file copyright.txt, distributed with this
package book.graphic.painter2D;
/**
* 画板命令。LINE表示画线，CIRCLE表示画圆，RECTANGLE表示画矩形
*/
public interface Command {
public static final int LINE = 2;
public static final int CIRCLE = 4;
public s
