The Meta Trader 4 is a Forex indicator developed using the MQL4 programming language. It can be used to create manual Forex trading strategies. Meta Trader 4 indicators can be categorized into several groups - general purpose, multi- time frame, divergence, statistical, and free foreign exchange indicators. These can be downloaded online which will give you an opportunity to test them before actual deployment on the Meta Trader platform. Additional alerts for the MT4 indicator can be put in place including email, sound, and pop-up alerts.