Boss Audio Systems BR-900CD User Manual

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Section 1
Canceling an Operation (Undo/Redo)
Occasionally when the recording you make may not turn out 
as you wish, or the settings you make for an editing 
operation are incorrect, and you want to reverse what you 
have done. At these times, you can use the “Undo function.” 
The Undo function reverses the action you have just 
performed and returns you to the status you were in 
beforehand. To reverse an Undo, you must use the “Redo 
function.”
For example, suppose you are punching in to loop record 
and record over the same location twice. To undo the 
recording you just performed and return to the first 
recording, you would use the Undo function. 
To then reverse the Undo and return to the condition that 
you were in immediately after the second recording, you 
would use the Redo function.
* After you have performed an Undo, you can only perform a 
Redo (you cannot perform an Undo again).
* If you record something, or carry out Track Edit after 
performing an Undo, it will no longer be possible to perform a 
Redo.
* Undos only affect audio data recorded to the tracks. You 
cannot undo changes made to parameter settings, or data other 
than audio data.
* Keep in mind that the history of all operations you’ve carried 
out with respect to the recorded data will be cleared as soon as 
you carry out a Song Optimize (p. 78). This means that once 
you execute Song Optimize, you’ll no longer be able to perform 
an undo. 
Reversing the Last Operation 
(Undo)
1. Press [UNDO/REDO].
“UNDO?” appears.
fig.01-401d
2. To execute Undo, press [ENTER] (YES).
Press [ENTER] to reverse the last performed recording or 
editing operation.
If you decide not to Undo, press [EXIT] (NO).
Canceling the Undo (Redo)
To reverse the Undo you just executed, perform a Redo.
1. Press [UNDO/REDO].
“REDO?” appears.
fig.01-402d
2. To execute Redo, press [ENTER] (YES).
The Undo you just performed is reversed.
If you decide not to Redo, press [EXIT] (NO).