OptionalalphaAlpha events (0–255).
OptionalmoveHorizontal position events (chart units, center = 0).
OptionalmoveVertical position events (chart units, center = 0).
OptionalrotateRotation events (degrees, clockwise positive).
OptionalspeedNote scroll speed events.
One layer of animation channels for a judge line.
Multiple layers are composed additively. Layer 0 is the base; later layers add to the computed values.