2002 plastic window prevent scratch and cracks

[Spinnaker]

What they are refering to is a technique to help prevent the plastic window from cracking where it is folded in the middle. What you do is place a rolled up towel in the fold of the window as it is retracting to keep the window from bending too sharply as it is folding up. If you are by yourself, it requires that you partiallly retract the top, get out and place the rolled up towel in the fold of the window, then get back in and continue with the top retracting. it makes the window fold around the towel in a nice round bend, instead of a sharp bend. I store the rolled up towel behind the roll bar in my car. I got a dark grey towel and you can hardly see it with my black interior. It sounds like a PITA, but is better than cracking the window in two. ($$$$$)
BTW, don't try to put the top down if the weather is cold. You are taking a risk of cracking the window along the fold line because the plastic window is less flexible when it is cold.