Turbo mode is recommended. Map marker: Move to change start. Detail: The iteration of the fractal, fractals are infinite! Dropoff: How many pixels the size will increase before the detail increases by 1. The detail is reset each loop. Loop: The number of pixels after the animation seamlessly repeats. Speed: The zooming speed.
Use https://turbowarp.org/930851032?hqpen&offscreen&limitless&turbo for a vector pen. https://en.wikipedia.org/wiki/Koch_snowflake The Koch snowflake is a fractal curve constructed by making a triangle, then building a smaller triangle on each side of the curve.