Virtual CoPilot

I have searched and searched and found no answer to this so, I hope someone on here has a clue about it.

In the FSX.cfg file, there is an entry:

VirtualCopilotActive=0 (or 1)

Does anyone know what this is supposed to do? I had thought that it was what auto-set the radios/ATC/Xpndr, etc. when you make selections in the ATC window, readbacks and the like but, I see no difference with it 1 or 0.

Just trying to fill in the blanks here.