Files that contain the .ex4 file extension are associated with the online MetaTrader trading platform software application. The MetaTrader application is an online program that is used to trade Forex, Futures and CFD markets in the online environment.
The EX4 files contain code that have been compiled from different MQ4 files. These files contain Expert Advisor Files and can be executed by the trading platform application.
Some of the EX4 files that are on a user's computer are pre-written files that are included with the MetaTrader application. The EX4 files can also be custom files that are written for the MetaTrader software.
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