What is the function of any key

 F1: Windows is used to open in safe mode. It also works as a help button for most software including Windows.

F2: In most cases this key is used to enter the BIOS during the launch of Windows. Rename or rename a file or folder that is selected on the computer and it can be pressed.

Alt + ctrl + F2 is used to open a document in Microsoft Word.

F3: This button works for windows desktop searches. By pressing this key, you can also return the last line in DOS mode.

F4: This button works for opening an address bar in Windows Explorer or Internet Explorer. Alt + f4 is used to close active windows at once.

F5: This button works to refresh the browser.

In the case of Microsoft Word, this button opens with the Find, Replace, Go to dialog window.

F6: This is used to go to or select a browser's web address. In some cases, this button also reduces the volume.

F7: Used for checking spelling and grammar in Microsoft Word and Outlook. For some laptops, the volume can be increased with this button.

F8: This button is used to open Windows Safe Mode. On some computers it can be started with Windows Recovery System.

F9: This button works to refresh the case of Microsoft Word. For some laptops it can reduce brightness.

F10: It opens the menu bar with any active window. For some laptops the brightness can be increased with this button.