Avidyne IFD540 Pilot's Manual page 107

North Up can be either Magnetic North or True North depending
on the "Bearing Reference" selection on the User Options –
SETUP tab of the AUX page.
Track-Up, Arc View Example
TIPS AND TECHNIQUES
Map Content Control
Map features displayed are highly dependent on a
combination of the map view, map range, map
declutter settings, and user setup choices. For
example, if the flight plan concludes at an airfield,
the airfield identifier may be automatically
decluttered in favor of the waypoint identifier that
represents the airfield from the flight plan. In this
example, both identifiers can be made visible by
ranging in the map to under 4nm.
Map Pages 3-3