Hm alright, I only know of “spaces” on Firefox (also colour coded, but I don’t think you can collapse them), very useful if you have multiple accounts for Google lets say, but in different contexts (like work or private), you can use that so you don’t have to log in every time.
Also thanks for the explanation:)
Same Herr. Notjustbikes is amazing. Also on track to try Linux again, since gaming is becoming more and more of a thing