public static String whtToString( byte[] t )
    {
        String s = "";
        s += "[ ";
        for( byte bb : t )
        {
            if( bb < 0 )
            {
                s += ( bb + "  " );
            }
            else
            {
                s += ( "/+" + bb + " " );
            }
        }
        s += "]";
        return s;
    }