Vertical columns of cells in the score are called frames, which define which sprites exist at a particular instance of time. The numbers across the top of the score show the number of each frame, like the frames of a traditional movie. The Stage, is where the visual media is put and manipulated. The user interacts here, visual media only, graphics, text and movies. The cast is the database of media elements, sound, graphics, videos, animations and scripts, etc.
Sprites are elements, which exist in the cast and display in the score.
As you might want to use a cast member more than once and change certain ambient factors. If the cast member is changed all sprites are changed too. The Control Panel controls playback and default options for movie playback. You as director assemble the cast , direct the score , and play your movie on the stage . In conjunction with a solid image editor, the possibilities for movies are limited only to your imagination.