https://daringfireball.net/2012/01/ibooks_author_file_format
Daring Fireball: On the Proprietary Nature of the iBooks Author File Format
The iBooks format isn’t different just for the sake of being different; it’s different for the sake of being better — not better in the future, after a W3C...
daring fireballon thefile formatproprietarynature
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