Open The Starter Document; Create A Motion Tween - MACROMEDIA FLASH 8-FLASH Tutorials Manual

See the animation play in a separate window as a
SWF file
To see the animation play in a separate window as a SWF file, select
Control > Test Movie.
See the animation on the Stage in the Flash
authoring environment
To see the animation on the Stage in the Flash authoring environment,
drag the red playhead across the Timeline.
Close the application
To close the document, select File > Close.
If you prefer to keep the finished file open as a reference while working
with the starter file, be careful not to edit it or save any changes to it.

Open the starter document

Now that you have seen the completed file, it is time to create your own
Flash document. To get started, you'll open a starter file that contains a few
graphics to which you will apply animations.
In the Animation Easing folder, open the file called tween_start.fla. This
file contains some graphics that you will use to create the animation.

Create a motion tween

To animate the eight-ball graphic over time, you need to insert enough
frames in the Timeline to lengthen the time from the beginning of the FLA
file to its end. In this section, you will add frames to the Timeline and then
create a motion tween within those frames.
Open the starter document 165