The Morse-Thue Floor. I think about eight iterations should be enough to give an idea... MorseThue-2c{ Axiom i Angle 4 i=[c6@i2[f[+@4f]f[+@4f]f[+@4f]f]+f[-@4f]f[-@4f]f[-@4f]f] i=[[ij]+g-ji]gg j=[c44@i2[f[+@4f]f[+@4f]f[+@4f]f]+f[-@4f]f[-@4f]f[-@4f]f] j=[[ji]+g-ij]gg f=gg g=gg }