When Nintendo first unveiled the Switch 2 last month, we (and everyone else) noticed something peculiar about the new Joy-Con controllers. Now, some recently unearthed patent filings more or less confirm all the theories.

Nintendo’s latest earnings report is out and sales of the Switch console have plummeted after the Switch 2 rumors and announcement, exactly as you’d expect. Switch sales are now projected to hit 11.0 million for the year ending March, down from 12.5 million units forecasted.

If we had to judge by the included diagrams, the trigger and bumper on each controller would act as the mouse click. Multiple included images show a hand with the thumb on the joystick. Multiple parts of the patent mention the use of the thumbstick, and we suspect it could act as the scroll wheel or serve some other scrolling function.