void main()
{
    object who = GetLastUsedBy();
    object door1 = GetObjectByTag("Private" + GetTag(OBJECT_SELF) + "a");
    object door2 = GetObjectByTag("Private" + GetTag(OBJECT_SELF) + "b");
    if (GetLocked(door1) == TRUE) {
        DelayCommand(0.1,SetLocked(door1, FALSE));
        DelayCommand(0.1,SetLocked(door2, FALSE));
        SpeakString("Room " + GetTag(OBJECT_SELF) + " unlocked");
        DeleteLocalObject(OBJECT_SELF, "who");
     } else {
        DelayCommand(0.1,ActionCloseDoor(door1));
        DelayCommand(0.1,ActionCloseDoor(door2));
        DelayCommand(1.0,SetLocked(door1, TRUE));
        DelayCommand(1.0,SetLocked(door2, TRUE));
        SpeakString("Room " + GetTag(OBJECT_SELF) + " locked");
        SetLocalObject(OBJECT_SELF, "who", who);
     }
}