Undo+and+Redo

==**Y//ou would use undo to fix a mistake that you made. You would use redo to put back something that you didn't want to lose. To use Undo you can go to Edit>Undo in the menu bar, press CTRL + Z on the keyboard, or the toolbar button on the left. To use Redo you can go to Edit>Redo in the menu bar, press CTRL + Y on the keyboard, or the toolbar button on the right.//**==

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By, Derek B. Jesse H.