---
title: "init(substThreshold:addGlyph:substGlyph:)"
framework: Core Text
role: symbol
role_heading: Initializer
path: "coretext/justpcconditionaladdaction/init(substthreshold:addglyph:substglyph:)"
---

# init(substThreshold:addGlyph:substGlyph:)

## Declaration

```swift
init(substThreshold: Fixed, addGlyph: UInt16, substGlyph: UInt16)
```