Technical data for this type of fractal : click here (C06-010).

For the fractal here :
fn1() = ident(), fn2 = ident(), fn3 = ident(), fn4 = zero().
real(p1) = 1, imag(p1) = 4, real(p2) = 1, imag(p2) = 1, real(p3) = 0, imag(p3) = 2

Note.
This fractal and fractal C06-200 have the same functions and parameters.
Here the fractal is a zoom on an area of fractal C06-230
(see for example the center bottom of C06-230)
with the same palette of colors.