MQL4

What it means

MQL4 is the scripting environment behind custom indicators and automation on MetaTrader 4.

What to watch

Ports between MQL4 and other platforms still need careful testing because price handling, events, and drawing logic differ.

Where traders usually run into this

MQL4 matters most when it starts affecting an actual chart read, indicator setting, or workflow choice rather than staying as an abstract definition.

• metatrader 4 keeps this term attached to a real page instead of leaving it as standalone jargon.
• Opening Range Levels keeps this term attached to a real indicator instead of leaving it as standalone jargon.
• Market Structure Swing Labels keeps this term attached to a real indicator instead of leaving it as standalone jargon.

Best next page if this term is blocking you

If you understand the definition but still do not know what to do with it, start with Opening Range Levels. That page is the fastest way to see how mql4 shows up in a real indicator workflow.