upr for the above image:

step-3 {
fractal:
  title="step-3" width=480 height=480 author="Kerry Mitchell"
  created="July 13, 2001" numlayers=1
layer:
  insolid=16777215 method=multipass caption="Layer 1" visible=yes alpha=no
mapping:
  center=0/0 magn=1 angle=0
formula:
  filename="mt.ufm" entry="mt-pixel" maxiter=1 percheck=off p_inside=yes
inside:
  filename="lkm.ucl" entry="rose-range-lite" transfer=linear repeat=yes
  p_scale=1 p_rangewidth=0.1 p_colorby="last magnitude" p_ac=1 p_bc=3
  p_as=0 p_bs=0 p_curvecenter=0/0 p_rot=0
outside:
  transfer=linear repeat=yes
gradient:
  smooth=yes numnodes=1 index=0 color=0
}