This action is used to move to the previous frame in the slideshow.
Note:
If the slideshow is playing, (rather than paused or stopped), it will then continue from that frame in accordance with the timing of that frame.
Setting up the Backward One Slide action:
1. Add the Backward One Slide action to your trigger, as described in adding actions. The Backward one slide tab will automatically appear when you add the action.
2. Click on the name of the slideshow object in the slideshow object list that you want to use this action with.
3. Click on the Apply button to save your changes.