JLCooper MCS5 - Manual (Page 42)

Display MIDI Tab
If Write to Display with MIDI is checked the MCS5 will accept the Notification SysEx Message,
described in the earlier section on the Native MIDI Protocol. Un-checking the Write to Display with
MIDI box will delete any function assigned to the display.
As mentioned earlier, if you want another application to write to the MCS5 screen, but sometimes need to
see the button labels, you can assign the Labels function to App Button 8. Whenever you press App
Button 8, the button labels will be shown. Releasing it will cause the display to revert to the built-in
function.
MCS5 User Manual
42