The corner straps in the earlier versions of BookBook were changed to the current suspension system in response to physical changes to the MacBooks. The border around the screen has become so thin that it was becoming nearly impossible to position the straps in a place where they'd hold the corner of the display without popping off or covering part of the screen. And since the corner straps were primarily there to keep the cover from falling back onto the desk when the computer was in use, we designed a new suspension system that will keep the cover against the MacBook lid without actually attaching to it.
