Picture viewing shortcuts

Hi all,

I’m viewing JPG files of documents in Devonthink Pro. I have big monitors, and so my default setting is to have files open using the full width of the screen. When I open the JPG file with a keystroke, it always opens at the bottom of the document.

What is the keystroke to use to move to the top of the open picture or to page up? Neither Home nor Page Up seems to work (I’m using an external Windows keyboard). Page Down does, however, work. Using the arrow keys is very slow.

Any tips would be appreciated!