The iBooks 2.0 textbook formatToday, Apple released both iBooks 2.0 and an authoring app called iBooks Author. The new iBooks, the authoring app, and Apple’s new textbook category are all based on a new ebook format Apple has invented. I’ve spent a few hours staring at the innards of a file exported from iBooks Author in an attempt to understand what it going on. I still only grasp a fraction of what they are doing, but I figu
