There have been a ton of folks that don't understand the button. I don't get the problem, myself with it, it's self explainatory...just push it. But I guess, with so many not understanding it, they should make it more noticable as a button. Also, I blame every salesperson out there that didn't show that to the customer. There's NO reason for not being shown all the buttons at time of delivery, that's part of the process, but there are so many short-cuts these days, and laziness from salespeople, it's no wonder people are confused with all the buttons.