Quote:
Originally Posted by DVC
LIT? What the hell is that? I don't know where you live, but there is only one universal document standard and that is PDF. Since the rules of decoding PDF are decades old, why would anyone design a conversion program that accepted PDF as the "last" choice? In reality, PDF is the only input format needed for making eBooks.
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The original design aim of a PDF was that it should handle layout and NOT be editable (and thefore making it convertable was not a design aim). It was not intended that it should support reflowable text and thus be adaptable to display on any other form factor other than the one it was originally produced for. In particular PDF does not store much of the original information that related to reflowable text that word processor oriented formats store.
The other point is that if you think PDF is the only format required - then why are you bothering with Calibre if you already have PDF files! One assumes that this is because PDF does NOT satisfy your requirements.
All the modern ebook based standards internally have HTML+CSS as their representation. Therefore anything that cannot be represented in HTML+CSS is going to be lost in converting to any of these standards.