Function of function keys

[Agera One]

What are the functions of these keys? I don't even know what they are used for..
F1 - Help, F2 - Rename/Enter Bios , F3 - Windows explorer search, F5 - refresh, F8 - Enter safe mode, F11 - Full Screen
F4 - Combined with alt (any other sole function)?
F6 - ???
F7 - ???
F9 - ???
F10 - ???
F12 - ???

 

[byza]

They are sometimes shortcuts in different programs, eg F7 is spellcheck in MS word I believe (been a while sine i've used word on Windows)

 

[Agera One]

Can you say exactly what their functions are? Just for knowledge.

 

[byza]

As I said I don't use Windows much, it's only on my gaming PC, so I can't check most of these but here is a list I found.
http://www.computerhope.com/issues/ch000306.htm