---
title: kSpeechCommandPrefix
framework: applicationservices
role: symbol
role_heading: Global Variable
path: applicationservices/kspeechcommandprefix
---

# kSpeechCommandPrefix

The command delimiter string that prefixes a command (by default, this is “[[”). The string should contain two or fewer characters, which, for best compatibility, should be ASCII characters.

## Declaration

```swift
let kSpeechCommandPrefix: CFString
```