---
title: kOfflinePreflight_Optional
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kofflinepreflight_optional
---

# kOfflinePreflight_Optional

## Declaration

```swift
var kOfflinePreflight_Optional: Int { get }
```

## See Also

### Constants

- [kOfflinePreflight_NotRequired](audiotoolbox/kofflinepreflight_notrequired.md)
- [kOfflinePreflight_Required](audiotoolbox/kofflinepreflight_required.md)