Check out http://community.jboss.org/wiki/HibernateOGMGeneralInformations
This is a giant Wiki markup element.
When you edit it (Safari), the whole content is full but blank.
To edit you, you must copy the data into a pure text editor (a text editor keeping formatting screw things up but that's another bug / story), edit.
Then go back tot he wiki, go in html mode, remove everything, go in editor mode, add a new wiki markup and then paste the content in.