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To exit the compass, swipe right or keep the middle button pressed.
3.6.1 Calibrating compass
If the compass is not calibrated, you are prompted to calibrate the
compass when you enter the compass display.
If you want to re-calibrate the compass, you can start the
calibration again from the settings under Navigation » Calibrate
compass.
3.6.2 Setting declination
To ensure correct compass readings, set an accurate declination
value.
Paper maps point to true north. Compasses, however, point to
magnetic north – a region above the Earth where the Earth's
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