[2023] ANNO 1404 (Venice). how to see range of production buildings such as lumberjacks

So I'm replaying ANNO 1404 venice again (this time the history edition) and as I was looking on youtube for some tips on later scenario's, I noticed one video where the person could see the area of coverage or range (whatever it is called).

Below a screenshot of that video. Notice the area's around the lumberjacks that are already placed.

https://preview.redd.it/1o4n2ot4tr8b1.png?width=1467&format=png&auto=webp&v=enabled&s=1051deba4537e51213be0be5b4b6405e535ee3ab

I assume this is a hotkey because the player could toggle it on and off. Any idea how it is done?