The Mandelbrot Set is a fractal. An explanation of how it works can be found here. Click on a spot to zoom in on that spot or press A to zoom in and
Q to zoom out. Press P to increase the power, and L to decrease it. Press I to increase the maximum number of iterations and K to decrease it.
Every time you zoom in or out, change the power, or change the maximum number of iterations it will take a bit of time to load.