When you display a slide show, the mouse pointer and show controls are hidden. To make them appear, you can move the mouse. When you do this, very faint buttons appear in the bottom-left corner of the slide show, as shown in Figure 26-1, and the mouse pointer also appears. You can toggle the pointer and these buttons on and off by pressing A or = (equals). Ctrl+H hides the pointer and buttons. When you toggle this feature on, the following buttons appear:
Back, the leftmost button, takes you back to the previous slide, or to the previous animation event if the present slide contains animation.
Pen, next to Back, opens a menu for controlling the appearance of the pen or pointer. (I discuss this feature later in this chapter.)
Slide, which displays a box icon, opens a menu for navigating between slides. You can also open the navigation menu, shown in Figure 26-2, by right-clicking anywhere on the slide.
You can set up your show to move backwards when you click the right-mouse button. Choose ...