Buick 1993 Skylark Owner's Manual page 73

Ignition Key Positions
Your square-headed
key
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your ignition lock.
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This lock gives you five different positions.
Before you put the key in, your ignition will be in the
Lock position. This position locks your ignition, steering
wheel and transaxle. It's a theft deterrent feature.
The other positions let you perform these functions:
ACC: Accessory lets you'use things like the radio and
the windshield wipers when the engine is off. To use
"Acc," push in the key and turn it toward you. Your
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