The reaction really soften since a few day. probably cause of apophysis extensive usage. 
I also encounter the rectangle thru my reserch,
here the parent show a part of rectangle with a ellipsoide above it, in union.
the resulted fractal is in a debris Field surronding the ellipsoide.

pretty an ritch enought to be posted with a 6.5 



--
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https://sites.google.com/site/sinpix12823/fractint

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https://sites.google.com/site/sinpix12823fractal/

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start parameter file===========================
rectangle_swirl { ; 15_09_2012
reset=2004 type=formula formulafile=2012_6_1.frm
formulaname=retro_virus1
center-mag=-1.64464712041402300/-1.44959021993491700/6633.707/1/90/-1.23\
373533611470521e-014 params=4/-4 float=y inside=0
colors=00000e0e00eee00e0eeL0eeeLLLLLzLzLLzzzLLzLzzzLzzz000555<3>HHHKKKOO\
O<3>ccchhhmmmssszzz00z<3>z0z<3>z00<3>zz0<3>0z0<3>0zz<2>0GzVVz<3>zVz<3>zV\
VzbVzjV<8>mX`kVajUb<2>ePdcNecPe<7>ddfdffdhf<3>epg<3>QkgLjfHhf<3>0ce<8>0X\
L0WJ0WH<3>0S7<2>0SS<2>07SEES<8>66_55`44a<2>11d00e11d<8>IDVKETMFSOHRQIQSK\
OSKMSKK<2>SQKSSKQSKOSKMSKKSK<2>KSQKSSKQSKOSKMS00G<3>G0G<3>G00<3>GG0<3>0G\
0<3>0GG<2>04G88G<2>E8GG8GG8EG8CG8AG88<2>GE8GG8EG8CG8AG88G8<2>8GE8GG8EG8C\
G8AGBBG<2>FBGGBGGBFGBDGBCGBB<2>GFBGGBFGBDGBCGBBGB<2>BGFBGGBFGBDGBCG000<6\
>000
}
frm:retro_virus1{;sinpix
a=real(p1^(-1*0.707106)),b=imag(p1/2)
z=1.4142^0.70106,c=pixel:
m=z^a+c
z=b*m/c*z
|z|<1974
}
end parameter file=================================