HP ProBook 4740s Notebook-PC - Manual (Page 21)

Component Description
(1) fn key Executes frequently used system functions when pressed
in combination with a function key.
(2) Operating system logo key Displays the operating system menu.
(3) Function keys Execute frequently used system functions when pressed in
combination with the
fn key.
(4) Operating system applications key Displays a shortcut menu for items beneath the cursor.
(5) num lk key Alternates between the navigational and numeric functions
on the integrated numeric keypad.
(6) Integrated numeric keypad Can be used like an external numeric keypad.
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