Why can’t we make the desired contents appear or disappear whenever we want by tapping wherever we want?
Why can’t we compare different contents on the same slide making them come and go freely?
Why can’t we move around the inserted contents once a slide show has started?

Why can’t we make the desired contents appear or disappear whenever we want by tapping wherever we want?
Why can’t we compare different contents on the same slide making them come and go freely?
Why can’t we move around the inserted contents once a slide show has started?
