The pressure reported by the tablet, between 0.0 and 1.0. If you use the mouse, it will be 0.5 when a button is pressed and 0.0 otherwise.
A presión da que a táblet informa, entre 0. 0 e 1. 0. Se emprega o rato será 0. 5 cando o botón estea premido e 0. 0 cando non.