Keynote
Keynote User Guide for Mac
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Welcome
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Use iCloud Drive with Keynote
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Export to PowerPoint or another file format
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Reduce the presentation file size
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Save a large presentation as a package file
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Restore an earlier version of a presentation
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Move a presentation
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Delete a presentation
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Password-protect a presentation
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Lock a presentation
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Create and manage custom themes
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Copyright

Undo or redo changes in Keynote on Mac
You can undo recent changes then redo them if you want them back.
Undo or redo actions
Undo the last action: Choose Edit > Undo (from the Edit menu at the top of your screen), or press Command-Z on your keyboard.
Redo the last action you undid: Choose Edit > Redo, or press Shift-Command-Z.
If you want to delete all the changes you made since you opened a presentation, you can restore the presentation to its state when you opened it.
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