Akai DPS 24 Reference Manual page 69

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EDIT MODE
From the main EDIT mode, the F1-F6 softkeys provide access to the individual edit function pages.
All EDIT function pages look more or less like this:
In all EDIT function pages, you can see a graphic representation of the selected EDIT function.
The Edit Tracks graphic shows you which tracks are selected for edit (same as the 24
RECORD/EDIT SELECT keys).
The CLEAR (F3) and ALL (F4) buttons give you a quick way of deselecting or selecting all tracks for edit.
F6 (or the ENTER key) performs the selected edit function and returns to the main EDIT screen.
CANCEL (F1) (or the CANCEL key) returns to the main EDIT screen without performing the edit.
Q5 selects the Automation Edit options.
User Guide