Garmin G3X Pilot's Manual page 156

GPS Navigation
c) Turn or move the FMS Joystick to highlight the desired range above
which to display North Up orientation.
Or:
a) Move the FMS Joystick to highlight the 'North Up On GRND' field.
b) Using the FMS Joystick highlight 'On' or 'Off', and press the ENT Key.
When 'North Up On GRND' is 'ON' (default), the map orientation will
change to North Up when the aircraft is on the ground.
Map Page Menu
AIRPORTS & NAVAIDS
Airport and NAVAID information can be customized to display a variety of information
including: runway extension lines, runway numbers and visual reporting points (VRP). Runway
extension lines show runway orientation relative to other landmarks and terrain features and
are intended to aid in planning traffic pattern entry and/or departure routing.
Runway
Extension
line
134
Runway Extensions and Numbers (Map Page)
Garmin G3X Pilot's Guide
General Menu (Map Setup Page)
Runway
Number
190-01115-00 Rev. K