The F11 button does not have any direct function or shortcut on what I'm assuming you're saying is the Windows desktop. If you are trying to use it in a certain program, then you are going to have to specify what program that is.
Press harder, or buy a new keyboard.
press F11
Press F11
You press F11
Press "f11"
Press f11 to make youre screen go into fullscreen, press f11 to take it off full screen
press F11
Press F11
You can press F11 to make browser go to full screen. To exit, press F11 again and it brings itself to default.
press F11 on the keyboard and to minamie it back press it again
press F11
Click on the address bar and then press F11.
mac: join a level, press the button under esc, type is $testcheats=1; then hold down fn and press f11. then you edit levels. pc: join a level, press f10, type in $testcheats=1; then press f11. then you can edit levels. have fun!!