low-levelcreateCombinedMotionValueLow-level: build a tuple motion value and explicitly subscribe its sources.
createFollowValuecreateFollowValueTrail a source value with a tween — no spring physics, no overshoot.
MotionValuecreateMotionValue + createTransformDrag a slider — motion values feed both the dot and a live counter.
createMotionValueEventcreateMotionValueEventSubscribe to every change of a motion value — drag and watch the readout.