More functions for the cdx-1, Undoing a recording/editing operation, Undoing a recording or editing operation—undo – Roland CDX-1 User Manual
Page 138: Canceling the undo—redo, Undoing a recording/editing operation” (p. 138), Press [undo/redo] (p. 138), P. 138) to revert to the state

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More functions for the CDX-1
Undoing a recording/editing operation
When you record or sample a performance, the recorded (or sampled) results may
not always be as you expect. Or, you may make a mistake in editing. In such cases,
you can use the
Undo function
to cancel the result of the preceding operation and
return the data to its original state. Conversely, you can use the
Redo function
to
cancel the last-performed Undo operation and go back to the recorded or edited
data.
Undoing a recording or editing operation—Undo
When Undo is available, [UNDO/REDO] will light.
1. Press [UNDO/REDO].
[UNDO/REDO] will go out, and the previous recording or editing operation will be
undone.
Canceling the Undo—Redo
1. Press [UNDO/REDO].
[UNDO/REDO] will light, and the previous undo operation will be undone.