Yamaha Motif DDK-7 Owner's Manual page 101

Unifies the currently turned-on parameter's values.
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You unify the relevant parameter values in each Registration memory number or
offset them. Keep in mind that you cannot restore the original data once you
change the parameter's value.
Unifying the currently turned-on parameter's value:
Pressing [SET] unifies the currently turned-on parameter's values to the one in
the currently selected Registration (at the cursor position). A message appears
prompting you to confirm the operation.
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To continue the operation, select [UNIFY]. Select [CANCEL] to abort the
operation.
Offsetting the currently turned-on parameter's value.
Pressing the [+]/[-] buttons in the display or using the Data Control dial offsets
the currently turned-on parameter's value. If you select Pan as the parameter,
[ E ]/[ F ] buttons are shown instead of [+]/[-].
If you change the value, and if parameter values for some Registration memory
number reach the maximum or minimum, the following message appears.
In this case, pressing [OK] continues the operation, ignoring those parameters at
maximum or minimum value. Pressing [CANCEL] aborts the operation.
DDK-7 Owner's Manual 101