The key used to obtain the variation axis name from a variation axis dictionary. The value obtained with this key is a
CFString that specifies the name of the variation axis.
- iOS 2.0+
- macOS 10.4+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.Learn more about using Apple's beta software