When a rewind roll reaches the end of the playing notes, a special rewind (or reroll) perforation causes the roll frame to shift to the rewind position. The pneumatic mechanisms which actuate the playing notes are disengaged so that no notes will be played while the roll is rewinding. Rewinding is done at high speed. When the leader of the roll reaches the tracker bar, a rewind-to-play hole in the tracker bar (or, in some instruments, a mechanical device fitted to the take-up spool) actuates a mechanism which shifts the roll frame from rewind to forward. The roll is then ready to play another performance or to be taken from the instrument. * Synonym: reverse. * Dutch: terugspoelen. * French: retour. * German: Rückrollen, zurück, zurückrollen.