public static byte[] IntroLock(boolean enable) {
            MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter();

            mplew.writeShort(SendPacketOpcode.INTRO_LOCK.getValue());
            mplew.write(enable ? 1 : 0);
            mplew.writeInt(0);


            return mplew.getPacket();
        }