/usr/share/k3d/lsystem/shell4.ls is in k3d-data 0.8.0.3-3build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | # --- L-System Parser/Mutator --- Lj Lapre ----------------------------------
38
10
10
#
PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
#
P=S>(20)gg'
S=[&(90)[A]+(20)^(90)gg'&(90)[B][cD]]
#
D=^FD # show stalks
#
A=[^gA{.]. # put polygons on them
B=B^.g.}
@
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