How to handle undo when the change is not on screen

1. What is the keyboard shortcut for undo?
2. How do I change the Undo shortcut in Word?
3. How do you redo in notepad?
4. How does undo work?

What is the keyboard shortcut for undo?

To undo an action, press Ctrl + Z. To redo an undone action, press Ctrl + Y.

How do I change the Undo shortcut in Word?

To undo an action press Ctrl+Z. If you prefer your mouse, click Undo on the Quick Access Toolbar. You can press Undo (or CTRL+Z) repeatedly if you want to undo multiple steps.

How do you redo in notepad?

Choose Edit > Redo or type CTRL +Y. To continue redoing changes, choose Edit > Redo or type CTRL +Y repeatedly.

How does undo work?

Undo is an interaction technique which is implemented in many computer programs. It erases the last change done to the document, reverting it to an older state. In some more advanced programs, such as graphic processing, undo will negate the last command done to the file being edited.