/usr/share/k3d/lsystem/cees-plant.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 | # --- plant01.ls ------C.J. van der Mark jr. ----------------------------------
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q
q=[p][>(90)-(90)g(50).+(90)c(4)?(1)[x]]>(90)-(90)g(100).+(90)[p]
p=sp
s={ab[+Zh]<(90)ab[-Zh]}
a=Z+(5)a
b=Z-(5)b
d=Z{[+++e.][++ee.][+eee.][eeee.][-eee.][--ee.][---e.]}
h=cZZZt(3.2)$[++[++ZZd]ZZd][--[--ZZd]ZZd]ZZd
x=Z(60)!(0.90)x
e=t!g
@
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