HP ProBook 4435s Notebook-PC - Manual (Page 19)

Component Description
(1) Function keys Execute frequently used system functions when pressed in
combination with the
fn key.
(2) num lk key (select models only) Alternates between the navigational and numeric functions
on the integrated numeric keypad.
NOTE: The keypad function that is active when the
computer is turned off remains on when the computer is
turned back on.
(3) Integrated numeric keypad (select models
only) When the num lk has been enabled, it can be used like an
external numeric keypad.
(4) fn key Executes frequently used system functions when pressed
in combination with a function key.
(5) Operating system logo key Displays the operating system menu.
(6) Operating system applications key Displays a shortcut menu for items beneath the cursor.
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