[vinceleers]

Thanks Maurice, I think you got it right... I didn't have the patience to try to fully understand the feature. But now it seems so obvious to me!
My own approach was always to create a new workspace by clicking the plus button after I did something specific. By that I wanted to save the current workspace under a new name. But the trick is to create a new workspace before browsing on a new subject and to name it after that new subject.