Fujitsu LIFEBOOK T901 Série Guide D'utilisation page 45

Clicking
Clicking means pushing and releasing a button. To
left-click, move the cursor to the item you wish to
select, press the left button once, and then
immediately release it. To right-click, move the
mouse cursor to the item you wish to select, press
the right button once, and then immediately release
it. You also have the option to perform the clicking
operation by tapping lightly on the touchpad once.
Figure 16. Clicking with Touchpad
Figure 17. Right-clicking with button
Figure 15. Clicking with button
39 - Touchpad/Active Digitizer/Touchscreen