When you run it, the program asks you for the screen size.
Once we enter it, it will start monitoring all the movements of the mouse and will tell you in real time how long it travels and how many times you use the buttons.
In addition it calculates average speed. Really curious. Maybe it's not as useful as you can imagine, but it can be very curious to know it.
Finally, it can draw an histogram of the position of the pointer during the period of time.