Returns the control character action for the control character at the given character index.
- iOS 7.0+
- macOS 10.11+
- tvOS 9.0+
The layout manager doing the layout.
The proposed control character action for the character at the given index. Possible values are enumerated by
Manager .Control Character Action
The index of the control character for which the action is proposed.
The control character action for the control character at the given index.