I want to be able to do this because I am used from other editors to use the cursor as a visual bookmark, so that after scrolling by letting the cursor off screen I can come back to its place later. I know that in Vim I can use marks but I think that when using a mouse to scroll it is more easy to put the cursor in a place and let yourself know the cursor remains there when scrolling.
A similar question is this, but my question is different. Another acceptably similar question is this but it is not very clearly similar and it has a single answer which is the accepted one and is not useful when put to my question.