You can use the undo and redo buttons in the Editor if you have accidentally deleted an object, for example.

You can find these keys at the top of the Stage:

Select the arrow on the left to undo an action, and the arrow on the right to redo an action. 

You can also use the keyboard shortcut Ctrl + Z on Windows or Cmd + Z on Apple Mac computers to undo an action.

Related topics:

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