Apple Motion 4 - Manual (Page 553)

You can identify a keyframe’s value in the shortcut menu. Multiple keyframes on the same
frame are all listed in the menu.
To display a keyframe’s value
µ
Control-click the keyframe in the Timeline.
A shortcut menu appears. The first items in the list are the keyframe values for any
keyframes on that frame.
Note: There is no way to add keyframes in the Timeline.
Modifying Keyframes in the Timeline
When keyframes are visible in the Timeline, you can change their positions in time by
dragging them horizontally in the track. This does not modify the keyframe’s parameter
value, it just changes the position in time when the keyframe occurs.
To move a keyframe in the Timeline
1 Click the Show/Hide Keyframes button in the Timeline.
Any keyframes in the project become visible.
2 Identify the object where the keyframe is located.
3 Drag the keyframe to the left or right to move it forward or backward in time.
Although moving a keyframe in time does not change the parameter’s value, it can have
a significant effect on the nature of the animation. For example, if you have two keyframes
that animate an object from the top of the screen to the bottom over five seconds, moving
one of the keyframes forces the animation to occur more slowly (if you drag them farther
apart) or more quickly (if you drag them closer together).
When there are multiple keyframe values set in the same frame, you can choose any value
to edit individually, though the values are represented by a single keyframe marker in
the Timeline.
To edit a keyframe value already present in the Timeline
1 Control-click the keyframe.
553 Chapter 10 Keyframes and Curves