Control.Varying.Tween
tween
tween_
constant
timeAsPercentageOf
linear
easeInCirc
easeOutCirc
easeInExpo
easeOutExpo
easeInSine
easeOutSine
easeInOutSine
easeInPow
easeOutPow
easeInCubic
easeOutCubic
easeInQuad
easeOutQuad
type Tween m t f
type Easing t f