---
title: keyOptionalKeywordAttr
framework: coreservices
role: symbol
role_heading: Global Variable
path: coreservices/keyoptionalkeywordattr
---

# keyOptionalKeywordAttr

List of keywords for parameters of an Apple event that should be treated as optional by the target application.

## Declaration

```swift
var keyOptionalKeywordAttr: AEKeyword { get }
```