Function Keys (F1 - F12)

Did you know the action of Function Keys (F1 - F12)

Did you Know Each F Keys and for What it actually? 

F1-Help
F2-Rename
F3-Search
F4-Address Bar
F5-Refresh
F6-Spelling
F8-Safe Mode
F10-Menu Bar
F11-Re-size
F12-Save