To cancel or undo a change:
Choose Edit > Undo.
After you undo a change, you can choose Edit > Redo to reimplement the change.
If you make a mistake or don’t like the changes you’ve made to a project, you can undo them as long as they have not been saved.
Choose Edit > Undo.
After you undo a change, you can choose Edit > Redo to reimplement the change.
You can choose this command multiple times to undo your changes, one by one, up to the point when you last saved your project. The Undo command in the pop-up menu specifies which change is being canceled. For example, if the last change you made was modifying the name of a button, the command says Undo Edit Button Label. After you undo that change, the command specifies the next change that you can undo.