I do think the ePub3 TOC method is superior to the ePub2 version. For one thing it is pure html instead of a different standard of ncx format. It is more powerful in that you user can control how far down the TOC levels should descend and it is solves the problem of inline TOC verse external TOC since the same file can be used for both. Unfortunately the ncx debacle will still be with us to support ePub2 readers for a while.
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