A Ghost Envelope is the dimmed envelope that appears
when you adjust the master envelope. In this case, the master
envelope is untouched.
If you strip the ADSR assign, it's gone. If you assign any one
ADSR it comes back. A hard attack pushes the envelope forward
a soft attack shadows the envelope as shown. (I've stripped the
velocity parameters in the MIDI tab and it's still there)
I'd like to learn more about this so sampleconstruct, if you understand
this, I'd truly appreciate your help in making my own test model.