MetaTrader platform allows trading through automated expert systems (Expert Advisors).
The expert system is an automated trading system written in the language MetaQuotes Language 4 (MQL 4) which is incorporated into MetaTrader. You can create your own indicators, scripts and libraries using it. The program Code of expert systems is written by the editor MetaEditor four IDE (Integrated Development Environment), which is part of Trader.
Systems created by the language MQL II have the following features and benefits: