By dragging these breakpoints, you can modify the automation data directly in the Edit window and MIDI Editor windows. When you drag an automation breakpoint up or down, the change in value is numerically or textually indicated.
Dragging an automation breakpoint to the left or right adjusts the timing of the automation event.
To view the breakpoint automation type on any track, either select the corresponding Track View or reveal the corresponding Automation or Controller lane under the track.
The Grabber tools lets you create new breakpoints by clicking on the graph line, or adjust existing breakpoints by dragging them. Alt-click (Windows) or Option-click (Mac) breakpoints with a Grabber tool to remove them.
The Pencil tool lets you create new breakpoints by clicking once on the graph line. Alt-click (Windows) or Option-click (Mac) breakpoints with the Pencil tool to remove them.
The Trim tools let you adjust all selected breakpoints up or down by dragging anywhere within that selection.