F9 :
- Opens the Measurements toolbar in Quark 5.0.
- With Mac OS 10.3 or later shows all open Windows.
- Using the Fn key and F9 at the same time will open Mission Control on an Apple computer running Mac OS X.
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 HP and Sony computers.
- Enter CMOS Setup.
- With Mac OS 10.3 or later shows all open Windows for active program.
F11 :
- Full-screen mode in all modern Internet browsers.
- Ctrl + F11 as computer is starting to access the hidden recovery partition on many Dell computers.
- Access the hidden recovery partition on eMachines, Gateway, and Lenovo computers.
- With Mac OS 10.4 or later hides all open windows and shows the Desktop.
F12 :