When enabled, these buttons display in color, as shown here. When not enabled, these buttons are grayed out.
Back
Click this button to return to the previous slide.
Forward
Click this button to advance to the next slide.
Play/Pause/Replay
A single button displays one of these images, depending on the current activity. During playback, click this button to toggle between play and pause. When the slide concludes, click this button to replay the slide audio.