Windows Function Keys

Keyboard Function Keys

F1  
Activates help for current open application. If you’re at the Windows desktop, this activates the help for Windows.
F2  
Renames a highlighted icon, file, or folder in all versions of Windows.
In Microsoft Excel, edits the active cell.
ALT+CTRL+F2 opens document window in Microsoft Word.
CTRL+F2 displays the print preview window in Microsoft Word.
  Quickly rename a selected file
or folder.
Enter CMOS setup.
F3  
Starts find or search when at the Windows desktop in all versions of Windows.
 
In some programs, after an initial search is performed, F3 will find the next search value.
In MS-DOS or Windows command line, F3 repeats the last command entered.
In Microsoft Word CTRL+F3 will lowercase any highlighted text.
SHIFT+F3 changes the text in Microsoft Word from upper to lowercase or a capital letter at the beginning of every word. Windows Key + F3 opens the Advanced find window in Microsoft Outlook.
In Windows Explorer, start the search function.
Open Mission Control on an Apple computer running the macOS X operating system.
F8  
Pressing F8 over and over as the computer is booting starts the computer in Safe Mode.
Used by some computers to access the Windows recovery system, but may require a Windows installation CD. Displays a thumbnail image for all workspaces in macOS.
F9  
Refresh document in Microsoft Word.
Send and receive e-mail in Microsoft Outlook.
Opens the Measurements toolbar in Quark 5.0.
  Reduce laptop screen
brightness (on some laptops). With macOS 10.3 or later, displays a thumbnail for each window in a single workspace.
Using the Fn key and F9 at the same time opens Mission Control on an Apple computer running the macOS X operating system.
F10  
In Microsoft Windows, activates the menu bar of an open application.
SHIFT+F10 is the same as right-clicking on a highlighted icon, file, or Internet link.
Access the hidden recovery partition on Compaq, HP, and Sony computers.
Enter CMOS setup on some computers.
Increase laptop screen brightness (on some laptops). With macOS 10.3 or later, shows all open Windows for the active program.
F11  
Enter and exit full screen mode in all modern Internet browsers.
CTRL+F11 as the computer is starting to access the hidden recovery partition on many
  Dell computers.
Pressing F11 by itself accesses the hidden recovery partition on eMachines, Gateway, and Lenovo computers.
With macOS 10.4 or later, hides all open windows and shows the desktop
F12  
Open the Save as window in Microsoft Word.
CTRL+F12 opens a document in Word.
SHIFT+F12 saves the Microsoft Word document (like CTRL+S).
CTRL+SHIFT+F12 prints a document in Microsoft Word.

Preview a page in Microsoft Expression Web.

Open Firebug or browser debug tool.
With an Apple running macOS 10.4 or later, F12 shows or hides the Dashboard.
Access the list of bootable devices on a computer at startup, allowing you to select a different device to boot from (e.g., hard drive, CD or DVD drive, floppy drive, USB drive, and network).

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