ArcSoft SHOWBIZ 2 - Manual (Page 37)

Chapter 3: Edit
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3.8 Effects
Special effects are included to help you spice up your movies. In
the Effects tab, they are organized into various categories
including crop shapes, frames, and filters.
Click and drag an effect onto any video clip or still image on the
Timeline. It will appear at the top of the clip or image.
You can remove an effect by right-clicking it and selecting Delete.
You can add up to two effects on a single movie component.