There are quite a lot web digital reading material already has toc combined as part of book. W3C specification is a good example.
As converting system when I convert these web pages to epub I have two problems:
since the web pages does not have a separate toc so when I convert them to epub without toc in opf it will cause error.
sometimes it's could also be a better idea to be able to extract toc portion from book chapter to a separate one so that it can be easier for reading system to add more information to navigation.
Introduction
There are quite a lot web digital reading material already has toc combined as part of book. W3C specification is a good example.
As converting system when I convert these web pages to epub I have two problems: