Platforms & Tech
Intermediate
MQL4
Also called: MetaQuotes Language 4
MetaQuotes Language 4 — the programming language for indicators, scripts, and Expert Advisors on MT4.
Definition
MQL4 is a C-style language with built-in trading functions. Less strict than MQL5 (looser typing, fewer object-oriented features) but with an enormous codebase from the platform’s two-decade install base.