Transition is a term used to mean an animation that happens between slides, and transitions can be used very effectively to keep the pace of a PowToon Studio project moving along.
A few transitions available are: None, Fade, Sqweegee, Roller, Pull Down (a blind), Camera Left/Right/Down/Up, Hands, TV Static, Clipboard (Clapperboard), Zoom Out, and Zoom In. There are also Zoom Out Left/Right/Down/Up.
There are currently 18 transition options available, as shown here:
When talking about MS PowerPoint, Brent Dykes (PowerPoint Ninja at http://www.powerpointninja.com/about/) once described transitions as "empty calories" ...