Animated value that goes from the start value, holds and then transitions to the ending value
Starting value of the transition
Value that is maintained during the middle of the composition.
Value that is transitioned to at the end of the composition
Number of frames to transitinon for the start value to the hold value
Number of frames to transition from the hold value to the end value
Number of frames to delay for the start transition
Number of frames to delay for the end transition