Undo is a function performed to reverse the action of an earlier action. For example, you may mistakenly delete text in a word processor, but can use the undo function to undo that deletion. Some software programs may also have the capability of performing multiple undo's.
In the above picture is an example of how undo can be applied to an eraser in the real world. Like an eraser if you were to write or draw something and made a mistake you could erase (undo) the mistake.
What is the keyboard shortcut for undo?
Below is a listing of keyboard shortcuts for how you can undo on different operating systems.
- PC desktop and laptop = Ctrl + Z
- Apple desktop and laptop = Cmd + Z
- Google Chromebook = Ctrl + Z
Tip: Many programs support pressing the above keys multiple times for multiple undo's.
Tip: The shortcut key to redo an undo is usually Ctrl + Y.