Yamaha MODX6 Supplementary Manual page 20

Clear
This Job clears all data from a specified track.
[R] (Play) button or [PERFORMANCE (HOME)]  [Play/Rec]  [Pattern]  [Edit/Job]  [Track]  [Clear]
Operation
Pattern Name
Determines the Pattern to clear.
Track
Determines the Track to clear.
Scene
Determines the Scene to clear.
Clear Track
Executes the Clear job.
NOTE When you execute Clear Track with Track set to All and Scene set to All, Chain data (page 27) is deleted too.
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MODX Supplementary Manual