/usr/share/k3d/lsystem/circle-form.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 | # --- L-System Parser/Mutator --- Lj Lapre ----------------------------------
15
10
80
^^^^^^^^^[CL]|[CL]
C=FR&!C
R=[^^^^^^^^^ca%a|L]
a=[nmmn]
m=+Zm
n=-Zon
L=[>>>>>>>>>c{--z++z++z--|--z++z++z}]
o=[---------!!!'''cZl]
l=[c{--z++z++z--|--z++z++z}]
@
|