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# CGDisplayFadeReservationToken

A token issued by Quartz when reserving one or more displays for a fade operation during a specified interval.

```
typealias CGDisplayFadeReservationToken = UInt32
```

## Discussion

Quartz lets you reserve the display hardware to perform a fade operation. Fade reservations are valid for up to 15 seconds. Only one token is needed for both fade-out and fade-in.

You should release a fade reservation immediately when you no longer need it. If the reservation expires, releasing it is safe but not necessary.

---

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