F3 - Sync
The “sync” soft-key instantly resets the pattern being edited to its start position.
This is useful if you get a pattern out of step with the other tracks, perhaps by changing to a triplet
timebase or altering the last step.
A second function of the “sync” soft-key, accessed using FUNC + F3, performs a nudge of the current
pattern - advancing it one extra step forward for each press.