Entry 01 · the alphabet of motion
A small contrary motion that telegraphs the larger one to come.
CSS @keyframes · anticipation
The long entry
Anticipation is the wind-up before the throw. Before a character lunges forward, they pull back; before the door slams, the handle quivers. Without it, motion lands without weight. With it, the eye is primed and the action reads as inevitable. In UI, a button that briefly recedes before its primary state change uses the same trick.