Once the Nanocom functionality to bleed brakes was raised people want to fully understand what it does. That seems sensible.
The pwood999 post says it is mainly for getting stubborn air out of the modulator. Seems it mimics pressing the pedal with ignition on? I've certainly had fun getting all air out fitting a new modulator so I can see why it might be useful.
Think someone needs to explain how air is expelled from a sealed unit. Unless it causes air to be moved to the top of the modulator near the bleed nipple. It certainly cannot release air to atmosphere.