Kurzweil PC4 SE Musician's Manual page 182

Song Mode
Track Functions Page
Controller
The Controller parameter selects the Controller (or All Controllers) to be affected.
Value Range
The left and right Value Range fields respectively determine the lowest and highest values in a
range of MIDI Continuous Controller (CC) values that will be affected by the selected Track
Function.
Track Functions
Erase
This function erases specified events from a region of time, but it doesn't delete the region of
time. The result is like erasing a section of recording tape. If you want to completely remove
a segment and shorten the length of the track, you can do it with the Delete function.
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