In menu/HEADING it is possible to select and/or edit a target heading.
In menu/SYSTEM/COMP DECLINATION one can set a compass declination.
In this example, the selected target heading is 127° and the current heading is 115°.
A right-pointing arrow notifies the diver that the target heading is right from the current heading.
Two arrows indicate that the current heading is equal to the target heading.
On this screen the compass is represented with a moving scale. The 127° - target heading is marked with a yellow line. The current heading is market with a small triangle.
Before diving, make sure that the compass is correctly calibrated.
See chapter Settings/Compass calibration