Preview using timeline
Topic title may be a little confusing, but here's the deal
I've placed a video at my slide. Wow, I'm great! :)
But... When I move the pointing thingy at the timeline, I can see how does the movie look in that particular moment.
I can't achieve this on other slides - Let's say I have three rectangles on my slide, which come to the slide a different times and I want to see how would the slide look when only one is there, then the second... You know, the basics of timeline in almost every program, because it's timeline :)
I can switch that behaviour somewhere, or it's just for video clips?