Mechanics involve drawing paths on screen for the mouse to follow. i find the obstacle navigation and cheese goal creates a clear puzzle loop.
Clicking and dragging to draw a path is the main control, you must guide the mouse to the cheese while avoiding obstacles.
No extra buttons or toggles are stated.
Quick tip from my own play, drawing a path is better then guessing. The core mechanic is drawing lines on screen, so look at the whole level first and plan a route that avoids all obstacles before you let the mouse run.
Q: What is the main mechanic for controlling the mouse? A: You draw a path on the screen for the mouse to follow.
Q: What is the objective? A: You must guide the mouse to reach the cheese.
Q: Is there a timer or hints? A: Not stated.
Q: What is the main mechanic? A: Drawing a path on the screen for the mouse to follow.