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A fractal display program using the Lindenmayer rule system to describe the fractal.
For more information on Lindenmayer Systems (L-Systems) see:
http://www.biologie.uni-hamburg.de/b-online/e28_3/lsys.html
Contributed by Arlo Belshee, Kim Wallmark, Ward Cunningham, and Kevin Altis.
some examples until we have a file load/save implemented...
axiom=l
l=+rf-lfl-fr+
r=-lf+rfr+fl-
koch
angle=10
iterations=3
axiom=f+f+f+f
f=f+f-f-ff+f+f-f
seaweed
angle=21
iterations=3
axiom=[f-f+af][+fa]
a=ff+a-f
f=f[-aff+fa+f-bbb][-ff]
wheat
angle=10
iterations=4
axiom=f
f=ff-[-f+f+f]+[+f-f-f]
stars
angle=156
iterations=4
axiom=a
a=ff+aaaaf+f+f--fffff
the world's most difficult crossword puzzle
angle=89
iterations=4
axiom=a
b=af+[-b]ff+f+fff
a=affbb+b+b+af+b
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