Apple Human Interface Guidelines

I imagine this has been around for a long time, but I recently came across the Apple Human Interface Guidelines. There’s also a ~28MB 400+ page PDF available.

Surprisingly enough, I found the interface for the guide to be clunky, somewhat difficult to use, and really painful to try to read (probably due to text stretching to full screen on my widescreen monitor). You’d think that a guide specifying Interface guidelines would at least like this would take into account the usability of the medium it’s being presented on.