The Playback screen

Frames per second

Tweens = how
many frames are
calculated between
key frames

Fade in to begin
the animation

Fade out to end

Background toggle between image or solid colour
Select the swatch to change

Adjust the line thickness with a slider.

Turn on Rewind on to make the
animation cycle back and forth

Choose a short time to Pause
at the end of each cycle

The Default button
chooses the default
playback settings

The Reset button
returns to the original
playback settings