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# backButtonDisplayMode

The display mode of the Back button.

```
var backButtonDisplayMode: UINavigationItem.BackButtonDisplayMode { get set }
```

## Discussion

When the `backBarButtonItem` property is `nil`, the navigation item uses this display mode to determine the title of its Back button. The default value of this property is [`UINavigationItem.BackButtonDisplayMode.default`](/documentation/UIKit/UINavigationItem/BackButtonDisplayMode-swift.enum/default).

---

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