My primary radio is a JR 12X and I just got a new Futaba 12FG and I am trying hard to learn the 12FG programming - but I am not there yet. I find the 12Z and 14MZ manuals to be very helpful in better understanding the 12FG. I have a bunch of questions but will limit this to just one area. I am setting up a plane and have selected 2 ailerons and ailvator. When I go to the 'Function' menu I can see that ch1=elevator, ch2=elevator2 and ch4=aileron and ch5=aileron2. The same menu also shows ch1=elevator assigned to control J2 and the trim assigned to T2. It then shows ch2=elevator2 assigned to control "" and the trim assigned to "". What is ""? If you go to the servo monitor both ch1&ch2 are controlled by J2 and both trims are controlled by T2. What does "" mean and why does it not just show the controls J2 and T2? The same scheme applies the both aileron channels. I am enjoying learning to program this radio and see why folks who own them brag about how flexible and capable they are. Thanks

Howard