Effects
Add a new effect by pressing the plus icon. A menu will appear from which you can select.
Clicking on the frame numbers display will take you to that frame and right-clicking will provide a menu of frame editing options.
Icons
Add an effect.
Lengthen the movie.
Definition of Terms
An effect changes the size, position, transparency, and/or rotation of a shape over a series of frames. Generally multiple effects can be applied. For instance the shape fades in while growing from nothing.