Lincoln 1997 Town Car Owner's Manual page 134

WARNING
Position the shoulder belt height
adjuster so that the belt rests across the
middle of your shoulder. Be sure the
shoulder belt is properly positioned on
your shoulder each time you use the
belt. If the shoulder belt is off your
shoulder, on your upper arm or neck,
there is a greater risk of severe injury
in a collision.
Safety Belts for the Front Passenger
Outboard Seating Positions
Your vehicle is equipped with a dual locking mode
retractor on the shoulder belt portion of the
combination lap/shoulder safety belt for front seat
passengers and a locking "cinch tongue" for rear
outboard passengers.
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Dual locking mode retractors operate in two
ways:
Vehicle sensitive (emergency) locking
mode
In this operating mode, the shoulder belt retractor
will allow the occupant freedom of movement,
locking tight only on hard braking, hard cornering
or impacts of approximately 5 mph (8 km/h) or
more. The retractor can also be made to lock by
pulling the belt out quickly.
Automatic locking mode
In this operating mode, the shoulder belt retractor
will be automatically locked and will remain locked
when the combination lap/shoulder safety belt is
buckled, and does not allow the occupant freedom
of movement. This mode provides the following:
A tight lap/shoulder belt on the occupant.
Child seat installation restraint.