I am currently sorting through thousands of photos, selecting some here and some there in thumbnails view. I do it by ctrl-selecting individual files so I gather a bunch of them over time. I often need to scroll down, and obviously I want to work page by page, that is after I am done with one screen full of pictures, I want to move on to the next. To this extent I move the mouse pointer to the bottom most area of the scroll bar, as low as possible, and click, and I have to leave the mouse pointer there and take care it will not move by mistake.
Thus it would be handy if there were a keyboard shortcut that would do exactly that - without messing with the previously-made selection of files. Is this possible (and as a side-question: what shortcut would you assign)?