Frédéric_Plante:
Wow, cool thank's it will be even eazer then i touth.
No worries.
but I can't find what it is
For your reference I added a link to the containing file on github.
But you can view the entire core API here ( or your local installation ):https://github.com/arduino/Arduino/blob/ide-1.5.x/hardware/arduino/avr/cores/arduino/