What is F1 to F12 on keyboard key use??

F1 : Display Help

F2 : Rename the selected item

F3 : Search for a file or folder

F4 : Display the address bar list in File Explorer

F5 : Refresh the active window

F6 : Cycle through screen elements in a window or on the desktop

F7 : Commonly used to spell check and grammar check a document in Microsoft programs such as Microsoft Word, Outlook, etc.

F8 : Function key used to enter the Windows startup menu, commonly used to access Windows Safe Mode.

F9 : Refresh document in Microsoft Word. Send and receive e-mail in Microsoft Outlook. Reduce laptop screen brightness (on some laptops).

F10 : Activate the Menu bar in the active app

F11 : Enter and exit fullscreen mode in all modern Internet browsers.

F12 : Open the Save as a window in Microsoft Word.