- iOS 3.0+
- macOS 10.0+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
Performs the undo operations in the last undo group (whether top-level or nested), recording the operations on the redo stack as a single group.
Performs the operations in the last group on the redo stack, if there are any, recording them on the undo stack as a single group.
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