In our previous tip, we suggested using the Hand tool as an
alternative to the scroll bars. The Hand tool allows you to click and
drag the image to the area you want to view. Another alternative is to
use the Viewing keyboard shortcuts.

For example, to scroll the image view up one screen, press the Page Up
key. To scroll the image view down one screen, press the Page Down
key. Further, you can limit the shortcuts to scroll up or down ten
pixels at a time. To do so, press Shift as you scroll up with the Page
Up key or scroll down with the Page Down key.