Comment by kragen

hmm, i tried those rules in xfractint with 90-degree angles, and it doesn't seem to be a space-filling curve; http://canonical.org/~kragen/nothcurve.png is what i get at order 3

maybe my translation is buggy?

    hcurve {
      Angle 4
      Axiom A
      A=BF-F-BFFFD-F-FD+F+BF-F-BFFFD-F-FD
      B=BFFFD-F-FD+F+B
      D=D+F+BF-F-BFFFD  ; C is reserved in Fractint
    }