Boss HYBRID DRIVE OD-200 Owner's Manual page 13

Parameter Explanation
Specifies whether MIDI messages received
at the MIDI IN connector are retransmitted
without change from the MIDI OUT
MTH
(MIDI THRU)
connector
(oFF).
P1–Pg
Specify the memory corresponding to the
(P1–P9)
received program number. Bank select is
P10–Pgg
ignored (received regardless).
(P10–P99)
If this is "OFF, " the effect turns off.
P.00–P.28
OFF, M-1, M-2, M-3, M-4
(P100–P128)
(on) or are not retransmitted
Overall Settings (Menu)
13