====== en_part21_apb_zoneapi ======
  * [[:en:bs2_GetAntiPassbackZone]]
  * [[:en:bs2_GetAllAntiPassbackZone]]
  * [[:en:bs2_GetAntiPassbackZoneStatus]]
  * [[:en:bs2_GetAllAntiPassbackZoneStatus]]
  * [[:en:bs2_SetAntiPassbackZone]]
  * [[:en:bs2_SetAntiPassbackZoneAlarm]]
  * [[:en:bs2_RemoveAntiPassbackZone]]
  * [[:en:bs2_RemoveAllAntiPassbackZone]]
  * [[:en:bs2_ClearAntiPassbackZoneStatus]]
  * [[:en:bs2_ClearAllAntiPassbackZoneStatus]]
  * [[:en:bs2_SetCheckGlobalAPBViolationHandler]]
  * [[:en:bs2_CheckGlobalAPBViolation]]