---
title: kCDSectorAreaSubHeader
framework: IOKit
role: symbol
role_heading: Enumeration Case
platforms: [Mac Catalyst 13.0+, macOS 10.0+]
path: iokit/cdsectorarea/kcdsectorareasubheader
---

# kCDSectorAreaSubHeader

## Declaration

```occ
kCDSectorAreaSubHeader = 0x40
```