MT4 is one of many popular software for trading in the Forex market. It supports automated systems by means of EAs, custom scripts, and custom indicators. These tools can be written in MetaQuotes’ own language, MQL4. EX4: This type of file is a compiled version of the MQ4 source code. https://jaredblkmr.blogsvila.com/30605741/rumored-buzz-on-ex4-to-mq4