Bitsbox's circle command lets you draw circles of any size and color.
You can use the circle command with a lot of different parameters, or options.
The most basic usage takes three numbers. The first pair of numbers is the x and y position of the circle's center. The third is its radius, which is half of how wide it is.
You can also pass in color names for the circle's background color and line color.
To change the thickness of the line, you can call the line command first, like so:
There's a special color, 'clear' for when want a circle with a border but no inside color.