Any explanation for the 'and'?
I just meant to highlight the fact that the heading bug still corresponds to the magnetic value (as previously selected on the Autopilot Mode Control Panel).
I'm not particularly familiar with polar navigation (other than the effects high/low latitudes have on ND compass orientation and Map background). We have the Track Up Map display option and, as such, our pilots have to keep adjusting the hdg bug to match the track flown (at least it stops the crew alertness monitor going off
).