MQL5 ReferenceConstants, Enumerations and StructuresEnvironment State Client Terminal PropertiesRunning MQL5 Program PropertiesSymbol PropertiesAccount PropertiesTesting Statistics Environment State Constants describing the current runtime environment of an mql5-program are divided into groups: Client terminal properties – information about the client terminal; Executed MQL5-program properties – mql5 program properties, which help to control its execution; Symbol properties – obtaining information about a symbol; Account properties – information about the current account; Testing Statistics – results of Expert Advisor testing. Data Type Identifiers Client Terminal Properties