From D'ni Zoological Society
Comments: Relto from Island
Relto, according to Yeesha, means "the high place" and was originally Written as a gift for her parents, based on the design of Myst Island. The Book itself has the previously unheard of ability to follow its owner (and only its owner) through the link when it is used, and is also capable of linking to itself.
Relto's Book is also capable of adding new items to the Age through the addition of pages. These pages are pictographic depictions of the item that is added. Additionally, these items can be turned off and on by touching the symbol itself.