If you find a wiki page that documents something that should already be in the book (i.e. something that has been in CiviCRM for a while but for whatever reason, hasn't made it into the book, please add as a child page of Documentation that should be in the user and administrator guide.
New and unstable features
We transfer documentation from these pages to the book as the code becomes stable and new versions of the software are released. This generally happens at one of our twice yearly documentation sprints.
For more information about documentation, visit http://civicrm.org/participate/documentation and wiki.civicrm.org/confluence/display/CRM/Documentation.
If you have questions about documentation, you can post them on our documentation forum http://forum.civicrm.org/index.php?board=11.0