/ ibooks

On the Proprietary Nature of the iBooks Author File Format

John Gruber:

It’s the difference between “What’s the best we can do within the constraints of the current ePub spec?” versus “What’s the best we can do given the constraints of our engineering talent?” — the difference between going as fast as the W3C standards body permits versus going as fast as Apple is capable.
daringfireball.net

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