How do I restore a deleted page or attachment?
Version 4.2 by Vincent Massol on 2014/01/13
Go to the index page of the wiki (for example, Main.AllDocs) and select the "deleted pages" or "deleted attachments" tab.
(If these tabs don't appear, you may not have sufficient administrative rights to see them.)
Find the document or attachment you want to restore from the list and click the "restore document" icon (green yin/yang arrows).
For more information see the documentation for the Index Application.