This document provides instructions for creating a basic motion tween animation in Flash. It explains that a motion tween animates the movement of a symbol from one position to another over time. The steps are: 1) open a new Flash file, 2) import an image and convert it to a symbol, 3) place the symbol in the first frame, 4) add a keyframe at a later frame and move the symbol, 5) select the tween option to animate the symbol's movement between the frames. Following these steps allows Flash to generate the in-between frames of the animation.