Pressing the arrow keys while a picture, movie or hot spot is selected will nudge the item one pixel in the direction of the arrow.
You may move a text box with the arrow keys. Since the arrow keys also move the insertion point within an active text box, it is necessary to hold the command key down while pressing the arrow keys to move the entire text box.
With No Selection or in ProViewer
With nothing selected or from within a ProViewer, the arrow keys may be used to scroll through the pages. The down arrow and the right arrow scroll forward. The up arrow and the left arrow scroll backward.