---
title: "init(format:reserved:length:language:)"
framework: Core Text
role: symbol
role_heading: Initializer
path: "coretext/sfntcmapextendedsubheader/init(format:reserved:length:language:)"
---

# init(format:reserved:length:language:)

## Declaration

```swift
init(format: UInt16, reserved: UInt16, length: UInt32, language: UInt32)
```