FLstudio.
It will also cause a random preset window from a vst to open. The one here is from a vsti I had previously closed.
I'm on El Capitan / Mac Mini[attachment=0:161ohd17]< >Screen Shot 2018-07-13 at 9.36.25 PM.png ...
FL recently as a gift and currently run it on my MAC using the 34-bit OSX Alpha version. Recently I have been trying to use the Fruity Envelope Controller to provide LFO waves, etc. and there is this access ...