It seems each airline decides what FMS software enhancements it wants for its various fleets. Having come from a fleet where lots of bells and whistles were included, I now see a more basic package. Previously, there was the facility to:
Have a Route 2
Insert just airways and the computer will work out the intersect points
Insert a time fix and have that appear on the map route as a time- useful if you want to remember to turn seatbelts on/get people out of the bunk etc.
I've now discovered a new trick that I don't know if we had previously:
Rt, Track offset both sets, 0.1R in both FMS displays, both Delete buttons simultaneously, then Legs (I think). Shows dist and time to all nearest airfields. Any other mysterious 'tricks'?