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# backItem

The navigation item that is immediately below the topmost item on a navigation bar’s stack.

```
var backItem: UINavigationItem? { get }
```

## Discussion

If the [`leftBarButtonItem`](/documentation/UIKit/UINavigationItem/leftBarButtonItem) property of the topmost navigation item is `nil`, the navigation bar displays a back button whose title is derived from the item in this property.

If there is only one item on the navigation bar’s stack, the value of this property is `nil`.

---

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