---
title: AXSpeechAttributeSSML
framework: Foundation
role: symbol
role_heading: Type Property
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+, watchOS 27.0+]
path: foundation/nsattributedstring/key/axspeechattributessml
---

# AXSpeechAttributeSSML

## Declaration

```swift
static let AXSpeechAttributeSSML: NSAttributedString.Key
```