This tool allows you to try out the various transition and tween effects offered in ActionScript 2.0 and then, when you’re happy with the way it looks, you can copy the code snippets into your own movies.
Pretty self explanatory really. Run the swf, use the radio buttons to pick a transition and tween effect and use the test buttons to see what they look like. The boxes on the right contain code snippets that you can copy into your own movies.
I’ve included the fla in the zip as it shows how to create a UI using standard Flash components.