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I think chapters are better than pages in the sense that chapters are pages witch can easily been identified by the end user.
Imagine you only what to read a certain part of an article, you can easily navigate trough it.
About a chapter with more than one page? for me is nonsense (talking about my needs).
Go trought it developers
if this feature cant be integrated in 2.0.x core i love it could be implemented on articles module like smartsection