How to debug code?

[Delbert]

When I set a breakpoint in MetaEditor and click "debug" menu, a message box will be popped saying "specified symbol is not selected".

And I can't find a way to go on. How to use the debugger in MT5? Is there any available document about how to debug?

If I stop at function OnCalculate,when next tick comes, what will the debugger act?

Thanks

[Delbert]

When I press F5, no "debug" tab appears.

[Delbert]

I just tried on an indicator,when trying EA, the debugger works.

What a pity if indicator is not supported...