What does QDM mean?

Question

PPL(A) - Licenza Pilota Privato (Aerei) - Comunicazioni in inglese - What does QDM mean?

QuizVDS · Accepted Answer

Magnetic heading to the station (no wind)

QuizVDS · Answer

Magnetic bearing from the station

QuizVDS · Answer

True heading to the station (no wind)

QuizVDS · Answer

True bearing from the station

ppl(A): What does QDM mean?