Seeing which line is currently executing without pausing is impossible as this changes far faster than the human eye can see. The way to do this in Wing is to run to a breakpoint and then step through code. If you're looking for a feature that slows down execution and shows it as it goes, that doesn't exist in Wing.
In my case, each line of code is making a data access, so each line takes several seconds. I have seen this kind of functionality in Labview (graphically), so it stands to reason it could exist in a text-based language. Even given that the flow will spend several seconds on each line, there is still no way to track where it is?