---
title: PDFMarkupType.underline
framework: pdfkit
role: symbol
role_heading: Case
path: pdfkit/pdfmarkuptype/underline
---

# PDFMarkupType.underline

Underline style for the markup.

## Declaration

```swift
case underline
```

## See Also

### Constants

- [PDFMarkupType.highlight](pdfkit/pdfmarkuptype/highlight.md)
- [PDFMarkupType.strikeOut](pdfkit/pdfmarkuptype/strikeout.md)
- [PDFMarkupType.redact](pdfkit/pdfmarkuptype/redact.md)