---
title: headerToolTip
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nstablecolumn/headertooltip
---

# headerToolTip

The string that’s displayed in a help tag over the table column header.

## Declaration

```swift
var headerToolTip: String? { get set }
```

## Discussion

Discussion When the value of this property is nil, the table column header doesn’t display a help tag (also known as a tooltip). Otherwise, the string is displayed in a help tag when the pointer pauses over the header of the table column. The default value of this property is nil.