All Computer Shortcut Keys

In these days, Computer is widely spread all over the world. So we all have to know about their shortcut keys to find features easily.
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Shortcut Keys	Description
Alt+F	File Menu Option in Current Program
Alt+E	Edit option in Current Program
Alt+Tab	Switch between open programs
F1	Universal help in all windows
F2	Rename a selected file
F5	Refresh the current window
Ctrl+N	Create new blank documents in some programs
Ctrl+O	Open a file in current software program
Ctrl+A	Select all text
Ctrl+B	Selected text to be bold
Ctrl+I	Change selected text into italic