Editing Wikibooks (section)

== Book content ==
[[File:Development of "Mathe für Nicht-Freaks" from Sep 2009 to June 2016.webm|thumb|Visualization of the development in the German Wikibook project [[b:de:Mathe für Nicht-Freaks|Mathe für Nicht-Freaks]]]]
While some books are original, others began as text copied over from other sources of free content textbooks found on the Internet. All of the site's content is released under a [[Creative Commons Attribution-Share Alike]] license (or a compatible license). This means that, as with its sister project, Wikipedia, contributions remain copyrighted to their creators, while the licensing ensures that it can be freely distributed and reused subject to certain conditions.

[[File:Wikibooks structure.svg|thumb|How English Wikibooks is structured]]
Wikibooks differs from [[Wikisource]] in that Wikisource collects exact copies and original translations of existing free content works, such as the original text of [[Shakespeare|Shakespearean plays]], while Wikibooks is dedicated either to original works, significantly altered versions of existing works, or annotations to original works.