SetAlert & Departure Gate Information

Hi
Is it possible to be notified when a flight is allocated to a departure gate? I see from the documentation that I have the option to pass in a flightId and a number of options such as e_filed e_departure etc, but can’t see any information as to what the triggers are for these (apart from the obvious for diverted, cancelled etc.)

Thanks
ossie

e_departure reflects any significant changes to the departure (origin) side of the flight: actual departure, estimated departure times changing more than 30 minutes, departure gate, etc.

e_arrival reflects any significant changes to the arrival (destination) side of the flight: actual arrival, estimated arrival times changing more than 30 minutes, arrival gate, etc.