Undo a mistake: Ctrl + Z

Step by step

1. Click the Start button! Look at the bottom of this practice computer: the dark strip there is its taskbar. In the middle of it, click the Start button (four blue squares). The main menu opens just above it. If you see two taskbars, use the one inside this page.
2. Click "Notepad". In the menu that opened, click the "Notepad" tile (a square with a small picture and its name under it): the app opens in its own window.
3. Type a word. Click in the white page of Notepad and type a word, for example "oops". We will undo it in the next step.
4. Undo: Ctrl + Z. Hold down Ctrl (at the bottom left of the keyboard) and press the letter Z once: what you just typed disappears. Ctrl + Z works in almost every program.
5. Close this window. You are done with this window, so close it: click the ✕ button at the top right corner of the "Notepad" window (on its title bar, the strip at the top). The window disappears.

These steps are written for SafePC, a pretend Windows-style computer in your web browser. On your own computer, the buttons and menus may look a little different, but the idea is the same.

More lessons in The keyboard

• Capital letters
• Symbols and numbers
• Type an email address
• Copy and paste with the keyboard