Stands for diversions??
If an a/c requests a diversion to 'x', it's first requirement is to be on the ground. The handling of the pax/crew is of secondary importance.
If that diversion is not allowed, (due to accountancy taking precedence over professionalism and common sense), the possibility of an emergency situation may arise, - which nobody wants.
If you want to find out how to handle non-emergency diversions, check out the pictures of Halifax, Nova Scotia, taken on 11th September 2001.