Hi folks. I am not sure how does it work the license in the collaborative book. So far in the footer of the book I saw: "Licensed under Creative Commons BY-NC-SA"

Now...what does it mean? That everybody is agree that whan he writes will be with that license?�� I wonder..suppose in one year we want to take such book an generate a real pdf/printed book, will be there some problem with that?�� I want to avoid such problems in the future.

Thanks

Mariano