The Step Editor displays notes or controller events for selected MIDI regions as beams in a user-defined time grid. You can easily add or edit note velocities or other controller data (making some editing tasks, such as data scaling, much faster), or quickly create and edit MIDI drum parts.
Lane parameters: Determine the type of event displayed or modified. When you select a row in the name column, its event definition is shown in the Lane inspector.
MIDI events: Represented by vertical beams in a time grid. Controller values, note velocity, and other values are indicated by the height of each beam (taller beams indicate higher values).
Double-click a MIDI region in the Tracks area, then click Step Editor.
Choose Window > Open Step Editor.
For more information about using the Step Editor, see Step Editor overview.