---
title: NSWritingToolsCoordinator.TextDecoration.grammarUnderline
framework: AppKit
role: symbol
role_heading: Case
platforms: [macOS 27.0+]
path: appkit/nswritingtoolscoordinator/textdecoration/grammarunderline
---

# NSWritingToolsCoordinator.TextDecoration.grammarUnderline

Requests a preview of the text with the grammar indication underline.

## Declaration

```swift
case grammarUnderline
```