Nav1 and 2 and ADF, grouped into one panel.
Nav 1 and Nav 2 radios have both stand-by and active frequencies. I could not find dual concentric rotaries, so I used simple rotaries with a push button function. By default, the fractions of the stand-by frequencies are active and will change when the rotary is turned. A push of the rotary button activates the full digits (this is visualized by full digits flashing twice). Another push of the rotary knob returns the focus to the fractions (also evidenced by flashing of the corresponding digits). If full digits were activated and there is no further action, the system automatically gives the focus back to fractions after 2 seconds.
This is a nice example of what can be done with the EPIC programming language EPL.