GREAT PLANES RealFlight 7 User Manual page 203

Modifying the NavGuides-
To add any of the options from the top list to the NavGuides display, click in
the checkbox next to the respective item.
The pane below the list of the Edit NavGuides dialog box contains a
description of the item when selected.
The NavGuides available are listed in the following table:
Option
Aircraft: Airspeed
Aircraft: Altitude (AGL)
Aircraft: Altitude (ASL)
Aircraft: Altitude (ATL)
Description
Check this item to display the current airspeed of the
aircraft.
Check this item to display the current altitude of the
aircraft above ground level.
Check this item to display the current altitude of the
aircraft above sea level.
Check this item to display the current altitude of the
aircraft compared to the terrain below. This option does
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