The codex can be accessed from anywhere in the world and contains categories to filter books by and a search function that allows you to search by a book's name or by the name of a quest they are involved in.
With the codex, any player interested in the game's lore will have a much easier time to find and read through the texts they've found. Once you pick up a book, note, or any item of the sort, its contents are added to your codex.
The categories that the codex contains are:
Lore & Histories
History of the Order, Malleus Daemoniorum, Voice of the Elders, Legend of the Brothers,etc.
Memories
Mahjarrat memories, Bandos' memories, etc.
Journals & Diaries
Diary of Herbi Flax, Dominion journal, Dungeoneering journals, First Dragonkin journal, etc.
Tablets
Lamistard's tablets, prophecy tabletx, TzHaar language tablets, etc.
Manuals & Guides
Gianne's cook book, Citadel handbook, Castle wars manual, Book of binding, etc.
Notes
Mahjarrat notes, My notes, Scabarite Notes, Valerio's lyrics sheet, etc.
Letters & Messages
Surok's letter, Letter from Brundt, lorwerth's message, etc.(Our Feedback: http://www.4rsgold.com/customer/message.html)

When a player manages to find every single readable item in the game and fully completes their codex, they are awarded with a cosmetic override and an emote. These can be used Cheap RS Gold untill new readable items are released that must be added to the codex.
The override is a large sack of books on your back, with paper falling out of it as you walk. The emote displays you taking a large book from a bookcase and sitting down in an ornate chair as you begin flipping the pages, before standing back up and putting it back into the bookcase.
A really cool idea, like a portable bookcase. But perhaps a bit too unrealistic. However, for the lore-lovers and completitionists,Cheap rs gold could be a nice thing to have. What is your opinion? Let us know.