Boss RC-3 Mode D'emploi page 12

Basic Operation
Saving a Phrase for One-Shot Playback
One-shot playback will play the phrase once from the beginning to
the end, and then stop automatically.
1. Hold down the [TAP TEMPO] button and press the
[WRITE] button.
The display will indicate "
2. Use the [ ] / [ ] buttons to specify the save-
destination phrase memory.
3. Press the [WRITE] button once again; the phrase will
be saved as a one-shot phrase.
If you decide not to save the phrase, press the [TAP TEMPO]
button, the [RHYTHM ON/OFF] button, or the pedal.
* Overdubbing is disabled when one-shot playback is in effect.
If the pedal is pressed during playback of the phrase, the
phrase starts playing from the beginning again (retrigger
playback).
* You need to save the phrase over again in order to cancel
one-shot playback (return to loop playback). (p. 8)
* If you want to stop a One-Shot phrase while it is playing back,
press the pedal twice within a period of 0.5 seconds.
10
oS . "
Cancelling an Overdub (Undo/Redo/Clear)
You can undo/redo/clear by holding down the pedal for at least
two seconds.
Operation Display Explanation
Hold down the pedal for at least two
seconds during playback or overdubbing;
Un
Undo
the recording or the most recent
overdubbing will be cancelled.
If you want to restore the cancelled sound,
hold down the pedal for at least two seconds
rE
Redo
while playback once again.
* Redo is only available for overdubbing.
Hold down the pedal for at least two
seconds while stopped; the current phrase
CL
Clear
will be cleared. (Clear is temporary; phrases
saved in phrase memory will not be deleted.)
During Undo/Redo, the PLAY and REC indicators will blink rapidly.
During Clear, the PLAY indicator will blink rapidly.