Subaru IMPREZA 2002 Owner's Manual page 135

Instruments and controls
To turn the wipers off, return the lever to the " OFF"
position.
B Wiper intermittent time control (if equipped)
When the wiper switch is in the "
the dial to adjust the operating interval of the wiper.
Operating interval can be adjusted continuously
from the shortest interval to the longest.
Two click stop positions of the dial may help you to
aim at your desired interval.
3-22
HB2023BA
" position, turn
B Mist (for a single wipe)
For a single wipe of the wipers, pull the lever toward
you. The wipers operate until you release the lever.
HG3011BA