Debugger controls for line-by-line execution. Step Into (F11) executes the next line and enters any called function. Step Over (F10) executes the next line without entering functions. Step Out (Shift+F11) runs the remainder of the current function and breaks when it returns. These are used after a breakpoint to traverse code execution. For example, Step Into an OrderSend()
call lets you dive into trade execution code (if source is available). These commands work in MetaEditor (MT5) and Visual Studio.