Editing Unwritten: System Reference Document/Aspects and Fate Points (section)

===Refresh===

Each character has a refresh rate, which determines how many points they receive when their pool of fate points are refilled. Refreshes usually happen at the beginning of a session, though the gamemaster can decide to declare a refresh at other times.

During a refresh, your fate points refill up to your refresh rate. If you have more fate points than your actual refresh, you don’t lose the additional points, but you don’t gain any either.

At the start of a new chapter, you reset your fate points to your refresh rate no matter what. You lose any extra fate points you have.