Yamaha SU700 Owner's Manual page 212

If the effect supports a RESOLUTION setting, then the current setting is indicated at
the lower right of the screen. You can change the RESOLUTION value by pressing the
[NOTE] button and turning the dial. Resolution values can be set separately for each
supporting effect.
Effect name
If the effect assigned to the block is a system effect, then you can not set a level value
for the MASTER track-the MASTER track setting is null, and is indicated on the
screen by a pattern of three asterisks. If the effect is an insertion effect, then you can
set a value only for the MASTER track; the values for all other tracks are null.
212
Level for most recently
controlled track.
Chapter 8 Knob Functions
Resolution (for certain
effects only)