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# CGDisplayReservationInterval

The time interval for a fade reservation.

```
typealias CGDisplayReservationInterval = Float
```

## Discussion

A fade reservation interval is a period of time during which a specific display is reserved for a fade operation. Fade reservation intervals range from 1 to `kCGMaxDisplayReservationInterval` seconds.

For more information about fade reservations, see the function [`CGAcquireDisplayFadeReservation(_:_:)`](/documentation/CoreGraphics/CGAcquireDisplayFadeReservation(_:_:)). Fade reservation tokens are discussed in [`CGDisplayFadeReservationToken`](/documentation/CoreGraphics/CGDisplayFadeReservationToken).

---

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