Fujitsu Stylistic Manual page 22

Button Icon
and Name
(Primary)
(Secondary)
Table 1-3 Application Buttons - Primary and Secondary Functions
* The Fn button has a handy "sticky" feature that allows you to press the two buttons in immediate
succession, rather than at exactly the same time. After pressing the Fn button, you have a short
time (2 to 3 seconds) to press the second button. Note that this feature is not available with
the Right-Click/Hovering button.
14
Table Icon
(Fn +
Button)
The Function button works in conjunction with the other
application buttons to provide additional functionality for
the buttons. Refer to specific details above.*
Pressing the Fn button twice in succession (within the
"sticky" time*), causes the Fujitsu menu to appear on your
screen, allowing you to modify certain system settings.
Description