package sim.app.lsystem;import java.io.*;// This keeps track of each rule... public class Rule implements Serializable    {    // what to replace    public byte pattern;        // what to replace it with    public ByteList replace;        public Rule()        {        replace = new ByteList();        }        public Rule( byte pattern, String replace)        {        this.pattern = pattern;        this.replace = new ByteList();        Lsys.setVector( this.replace, replace);        }    }