---
title: toolTip
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nswindowtab/tooltip
---

# toolTip

The tooltip for this window tab.

## Declaration

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

## Discussion

Discussion By default, the window tab’s tooltip displays its title string. Once customized, setting the toolTip property to nil causes it to follow the title property again.