In other words is the 'shift range' different to the drive gear? so in D, then a single D- operation would give me 5 in the display not a 1,2 or 3 and if so where do I see the 1,2 or 3?
I think that the terminology might be confusing you here.. This is my understanding - and Eric will correct me if I have got it wrong...
The 722.9 transmission has 7 forward gears + 2 reverse, by use of the C/S mode selector. These gears are not indicated on the multifunction display - only P, N, R and D are shown, plus the mode selected.
Additionally, the (speed) range of the forward gears can be limited or extended in three stages, 1, 2, 3. This is done in D, either by use of the 'one-touch' facility on the shift lever (D+, D-) or the switches on the steering wheel (left = limit range, right = extend range). This range is displayed in the multifunction display where 1, 2 or 3 replaces D.
The feature is intended to allow the transmission to provide engine braking at various degrees with 1 being minimum, and 3 being maximum, which is reserved for extreme gradients.