it was suggested by 53E7 way back in 2013.
It is quite simple.
You can select/deselect notes across 88 keys by clicking on the LED above each key.
There is also the Midi filter for channels and Note messages.
The Midi Note In readouts show the last note you played.
This will sound (or not) based on whether the Note is selected or not.
its all saveable as presets and you can CC each control for automation if you want.
I have made a couple of presets based on notes from major scales

Now you will never play the wrong notes again

regards
maus