The F5 key is used in an Internet browser to refresh or reload a web page. These keys act as shortcuts, performing certain functions, like saving files, printing data, or refreshing a page.For example, the F1 key is often used as the default help key in many programs. The function keys or F keys are lined along the top of the keyboard and labeled F1 through F12. Function keys allow you to perform an action with the press of a key - instead of typing a character. They are often combined with the Alt and Ctrl keys to do certain tasks, and on laptops, can also have dual functions like turning the volume up or down when used with a designated key, usually the Fn key. Every laptop has these keys which perform a unique function. These commands are typically printed above or on the keys. The action that happens for a function key depends on the software that is active when the key is pressed. Toggle the Fn Lock on and the keys will function as if you’re holding down the Fn key all the time, just as the Caps Lock key makes your letter keys function as if you’re holding down the Shift key all the time. In such keyboard, to use function keys, you may need to press another special key ‘fn’ (beside Windows key) and then any function key. arrow key works for the Play or Pause button, Fn+up arrow key for the Stop button, Fn+right arrow key for the Next Track button, and Fn+left arrow key for the Previous Track button. These function keys can be used with combination of other keys like ctrl or alt or shift. The function keys are those keys on top of a normal keyboard, which begins with ‘ F ’, and they range from F1 to F12, where each of them can be used to carry out different activities depending upon the selected program on the operating system that you are using. This can often be toggled with an “Fn Lock” key, which functions like a Caps Lock key. The Function keys on the top row of the keybaord are assigned tasks by the operating system or application. These keys are called enhanced function keys. Alternatively, if your system has a factory install there should be a Lenovo Care function with details and help on different subjects. Some software or apps might have functions for the keys, while others might not. The following table specifies the default enhanced-function key assignments that are available for Microsoft keyboards. Toggle Fn Lock. You can increase/decrease volume, turn on or off the WiFi, increase/decrease the brightness of the laptop with these special keys. Function keys are the 12 keys from F1 to F12 that perform certain special functions apart from the usual legacy function. These F1 to F12 keys are also known as HotKeys or Action Keys. Each function key is built to perform specific task but it may vary based upon operating system and the kind of program you are using right now. 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