Alesis Fusion Reference Manual page 146

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Chapter 3: Fusion Modes
Menu: Song/Editor/Trk Event
Parameter: Insert
Value Range: (None)
This button creates an event in the event editor window.
Menu: Song/Editor/Trk Event
Parameter: Delete
Value Range: (None)
This button deletes the currently selected event within the event editor
window.
Menu: Song/Editor/Trk Event
Parameter: Filter
Value Range: (None)
This button brings up an additional page letting you hide specific types
of data from your event editor. This makes it easier for you to edit the
data that you do see onscreen. See page 145 for more about these filters.
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