What's window server on macOS Catalina?

Hi,

Here's a better description than I could give: "here is some wiki stuff on this matter: WindowServer is a collection of services tasked with window management. It is also defined as a compositing engine responsible for reflecting application behavior on the Mac’s screen. The core macOS process sits in between the programs you run and their graphical manifestation you see on the display. It is executed once you log in and stops running as soon as you log out. Whenever you’re using an app, surfing the web via your browser, seeing an ad online, or playing a game, WindowServer is the entity that enables you to view it all dynamically. Therefore, it is a hugely important and harmless system element." https://macsecurity.net/view/393-windowserver-mac