What is the purpose of the 'setTimer' function in the Circle Wall program?

The 'setTimer' function plays a crucial role in the Circle Wall program by enabling the draw function to be executed at regular intervals. This is essential for creating animations or dynamic visual effects, as it allows the program to update the display continuously over time. By specifying a time interval, the 'setTimer' function ensures that the draw function is called repeatedly, which updates the position or appearance of the circle, thereby creating the illusion of movement or other changes in the animation.

Using the 'setTimer' function effectively syncs the visual updates with a specific timing aspect, enhancing the overall experience of the animation by providing smooth transitions and consistent behavior.