Press 1 - 9 to see different patterns of curves. Use turbo (shift+green flag) for a quick look, don´t use turbo if you want to see the process. Press b to change the background (black or squares). Press space to stop. Press c to see the colours 0 - 100 (from left to right).
COLOURING BY MATHS Examples of how modulus (mod) and absolute value (abs) can be useful for colouring.