to add pages to your campaign.
GM Notes and abstract concepts like Democracy, etc.
A 'Note' is a catchall for anything in your campaign that doesn't fit neatly into one of the five main types: Character, Event, Group, Item, or Place.
It can be a concept like democracy or smuggling, or a description of the coinage in your world.
It can also be notes to your players, such as house rules, or even a schedule of when you play.