Board Thread:Support Requests - Getting Started/@comment-8628628-20130424155405/@comment-452-20130426035240

Additionally, you can view the history of any page by adding "?action=history" to the end of the URL

In this case: http://rollplaydnd.wikia.com/wiki/Rollplay_Wiki?action=history This allows you to view any previous revision of the page, as well as revert to a previous version if something goes wrong.