The user can turn any part of their body into a form of literature whether it be a books, maps, scrolls, etc; which information can be recorded and stored within them. Any piece of information the user knows of already can be presented in book form for easy memory recall. The user can also copy or absorb other documents adding it to their archive of knowledge. The amount of documents they can store is limitless.
There are little to no combat applications for this devil fruit. While in a book form any damage done to the literature whether it is torn out or erased can be damaging to the users memory. Standard devil fruit weaknesses apply.