---
title: "init(header:substitutionTableOffset:)"
framework: Core Text
role: symbol
role_heading: Initializer
path: "coretext/mortcontextualsubtable/init(header:substitutiontableoffset:)"
---

# init(header:substitutionTableOffset:)

## Declaration

```swift
init(header: STHeader, substitutionTableOffset: UInt16)
```