Yamaha MU50 Owner's Manual page 82

Performance Volume (Pfm Vol)
Graphically indicates current Performance Volume setting.
Range: 0 — 127
This determines the overall Volume of the Performance.
Performance Pan (Pfm Pan)
Graphically indicates current Performance Pan setting.
Range: L63 — C — R63
This determines the overall Pan position of the Performance.
Reverb Return (RevRtn)
Graphically indicates current Reverb Return setting.
Range: 0 — 127
This determines the amount of Reverb return for the Performance in
the overall mix.
PERFORMANCE MODE
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