Ren'Py Looking for codex code for RenPy

[Rycharde's Realm]

I'm looking for code to insert a Codex entry on the game page (you know, the Save, Load, etc. page). I'm looking for a multi-tiered codex; something not too complex, but able to handle something like what is listed below, with a way to access from the dialogue screen via a link specifying a particular entry (i.e. Keket's name appears in the dialogue will be linked to the Keket page in the codex).

For instance:
- Characters
--- Keket (protagonist)
--- Rycharde Pendraig (background)
- Location
--- Hinxworth (city)
--- Afallon (kingdom)
- Lore
--- Magnum Cataclysmus
- Species
--- Humans
--- Orcs
--- Durinn
--- Sylvanni

Thx