Book (aka 'wiki'): structured, mass collaboratively authored documents

A book is a set of pages tied together in sequence, perhaps with chapters, sections, subsections, and so on. You can use books for manuals, site resource guides, Frequently Asked Questions (FAQs), or whatever you'd like.

Users who have permission can create a book and write, review, modify, or rearrange the pages. Many users can work together on a book. You can allow or disallow collaboration, to whatever extent you want.

At the bottom of book pages, Drupal automatically provides links for moving to the previous page and the next, and a link labeled up that leads to the level above in the structure. A contents page is also automatically created.

Read more about creating a book page