Mercury 1999 Villager - Manual (Page 107)

Make sure that the liftgate door and/or window are closed to
prevent exhaust fumes from being drawn into the vehicle. This
will also prevent passengers and cargo from falling out. If you must
drive with the liftgate door or window open, keep the vents open so
outside air comes into the vehicle.
CARGO AREA FEATURES
Rear Cargo net
The cargo net helps stabilize lightweight objects in the cargo area.
Attach the net to the anchors provided. The cargo restrained in the net
must not exceed 22 kg (50 lbs.) or the net may not stay secured.
The cargo net is not designed to restrain objects during a
collision or heavy braking.
Controls and features
107