but Boeing set up theirs to trip the WOW switches "on the zebra stripes". Obviously so the 737 can land in foul weather at indifferent airfields in Battle Creek, Michigan without falling off the runway.
Pretty much.
I remember one of my instructors talking about auto-land. He said: "The autopilot doesn't care for a greaser. Its job is to put the airplane in the TDZ, sometimes it pulls a greaser but when the conditions are appropriate it comes out quite a smack-down"