I was looking over my boots the other day, (Salomon X-Wave

,and noticed (not for the first time) that there is a "Cuff Height Adjustment" on the back. Then I read a review of the '06 X-Waves, and they mentioned that the cuff adjustment will let the boot grow with your abilities. How, and in which direction? It's set in the middle now, and looks like it'll move about 1/2 an inch up or down.