Apple Motion 3 - Manual (Page 554)

554 Chapter 6 Keyframes and Curves
Show audio waveform: Turns on display of the audio waveforms for the selected item
in the background of the graph. This lets you line up an effect to take place at the same
time as an event that occurs in the audio.
Note: If there are multiple audio tracks in the project, a pop-up menu at the bottom of
the Keyframe Editor allows you to view the waveform of any individual audio track in
the project, or the master track.
Fit visible curves in window: Automatically scales the graph vertically to include all of
the keyframes of your active parameters.
There are times when the values of your keyframes may exceed the vertical resolution
of the graph. For example, as you stretch a keyframe, you can drag it so far that you
force the window to scroll.
“Show audio waveform” enabled