Apple Motion 3 - Manual (Page 556)

556 Chapter 6 Keyframes and Curves
Two Particle behaviors—Scale Over Life and Spin Over Life—have mini-curve editors in
the Inspector (when the Increment Type parameter is set to Custom.) Mini-curve
editors are also present for paint objects, in the Stroke pane of the Shape Inspector.
By default, the mini-curve editor is collapsed and shows a scaled-down representation
of the actual animation curve.
To expand a mini-curve editor:
m Click the disclosure triangle next to the collapsed mini-curve editor.
The expanded mini-curve editor appears.
When expanded, the mini-curve editor shows a representation of the relevant
animation curve. In the example above, the Range parameter is mapped to the X axis
and the Spin Amount parameter is mapped to the Y axis.
The procedure for adding keyframes in a mini-curve editor is slightly different than
adding them in the full-sized Keyframe Editor.
Collapsed mini-curve editor
Sketch tool
Box tool
Edit tool
Mini-curve editor