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# UISplitViewController.Column.supplementary

The column for the supplementary view controller.

```
case supplementary
```

## Discussion

This value only takes effect when the split view controller’s [`style`](/documentation/UIKit/UISplitViewController/style-swift.property) property is [`UISplitViewController.Style.tripleColumn`](/documentation/UIKit/UISplitViewController/Style-swift.enum/tripleColumn).

---

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