The diary discs themselves were made from the wood of a tree native to the Utopian moon along with papyrus used as the "pages" for writing and drawing on. The circular carvings which adorned the top of the box were added for purely aesthetic reasons and were a form of Furling decoration. The papyrus used for the pages of the book were treated with a kind of lacquer which was added to make them last for a long period of time, a technique also used by the Egyptians of Earth perhaps suggesting a link between the two peoples.