Originally Posted by Alpha_Cluster
Well maybe not so much the rendering on screen but the formatting for the renderer is done by it from what I have read.
Sorry, I didn't express myself very well. You're right - ADE does do all the rendering. What I meant was that you don't have to pay Adobe their large fee if all you want is ePub rendering, because ePub is very easy to render, being HTML-based. The reason that a company licences ADE from Adobe is to be able to use DRM-protected books, which (other than B&N) all use Adobe's encryption technology.