Example: I want to extrude a face, I do it, then I rotate my object to give it a better look and realize I should have gone a bit lower or higher. I could undo and do a new extrude, or I could star a new extrude and delete the previous face I guess.
However, in general, is there a way to continue a previous operation (let it be extrude, inset, bevel, whatever) ?