I got tired of the fact that Drupal requires the use of a permissions module to implement a basic wiki. Thus, wikipage.module. Using the directions in How to create your own simple node type (from story node), I used the story module in 4.6.3 to create a new module with an additional access control permission: "edit all wikipages." Sure would be nice if we could just add this permission for the page module in Drupal core.