Section 4: Substitution Systems and Fractalshttps://www.wolframscience.com/nks/chap-5--two-dimensions-and-beyond#sect-5-4--substitution-systems-and-fractals
Section 7: Systems Based on Constraintshttps://www.wolframscience.com/nks/chap-5--two-dimensions-and-beyond#sect-5-7--systems-based-on-constraints