To save files on Windows system, it is Ctrl + S; on Mac OS system, it is Cmd + S.

You can use shortcut keys to do some work instead of the mouse. You can use keyboard shortcuts to open, close, and navigate the "Start" menu, desktop, menus, dialog boxes, and web pages. Shortcut keys can also be used in Word.

Many shortcut keys are often used in conjunction with the Ctrl key, Shift key, Alt key, Fn key, as well as the Windows key on the Windows platform and the Meta key on the Mac.

Extended information

Special shortcut keys for Windows 7 system

1. Press and hold right Shift for eight seconds: enable and disable filter keys;

2. Press Left Alt+Left Shift+PrtScn (or PrtScn): Enable or disable high contrast;

3. Press Left Alt+Left Shift+Num Lock: Enable or disable mouse keys;

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4. Press Shift five times: Enable or disable sticky keys;

5. Press and hold Num Lock for five seconds: Enable or disable toggle keys;

6 , Windows logo key + U: Open the Easy Access Center;

7. Windows logo key + L: Lock the computer user.