module cif.types; enum AssociationType : char { none = ' ', passengerUse = 'P', operatingUseOnly = 'O', } enum NoteType : char { none = ' ', GBTT = 'G', WTT = 'W', } enum TransactionType : char { none = ' ', new_ = 'N', delete_ = 'D', revise = 'R', } enum UpdateType : char { none = ' ', update = 'U', full = 'F', }