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# toolTip

The tooltip for this window tab.

```
var toolTip: String! { get set }
```

## Discussion

By default, the window tab’s tooltip displays its [`title`](/documentation/AppKit/NSWindowTab/title) string. Once customized, setting the [`toolTip`](/documentation/AppKit/NSWindowTab/toolTip) property to <doc://com.apple.documentation/documentation/ObjectiveC/nil-227m0> causes it to follow the [`title`](/documentation/AppKit/NSWindowTab/title) property again.

---

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