No mention of any zone whatsoever on my boarding card today, yet they decided to board through two doors.
Hard to tell whether is was a success, or worth the effort. It took four guys to lay out the route on the apron and to cordon it off, and the gate was manned by as many agents. After parents with infants and UMs boarded, they first spent six minutes setting everything up, plastering yellow signs with arrows and row numbers all over the gate and jetway, making lengthy announcements in English and Dutch, etc., before priorty boarding finally commenced, 11 minutes later than announced on the screens.
Once they got going, however, they did manage to board the aircraft in 13 minutes (a 737-700 with 142 seats and 131 pax) and we pushed back at STD-1.
Johan