Your first variables

The system variables mouseX and mouseY have values that reflect the position of the mouse on the canvas.

1. Update your program by setting the position of the ellipse to be specified by mouseX and mouseY.

2. Run the program and check that the ellipse follows your mouse around the canvas.

3. Move the background command into the setup method and run your program again. What difference do you see and can you explain why you see different behaviour?

4. Move the background command back into the draw method, but put it back as the last command in the draw method.

5. Run your program again. What difference do you see and can you explain why you see different behaviour?

6. Move the background command back to be the first command in the draw method.

7. Save your sketch.