Quote:
Originally Posted by DiapDealer
The EPUB3 spec is inherently backward compatible with EPUB2 reading systems
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No, it is not. EPUB3 is linked to Webkit. EPUB2 rendering systems do not use Webkit. EPUB2 rendering systems do not support HTML5 or CSS3.
Most of e-books today are created in Kindle format, which uses proprietary serialized markup. EPUB3 is pretty much dead.