I was zooming into Jim Muth's FOTD for Jan 7, 2014 and I was able to find some of those unusual rectangles. I suspect Jim was trying to find something other than rectangles when he posted the fractal. Even so, I thought the colors around the rectangles were great so I decided to post an image. I listed the PAR file for the image below if anyone wants to see where the image is from. Fracton mangles the PAR files when you import then export them but it is exactly Jim's post with a different location, zoom, and rotation. Nice Jim. Thanks for posting it. Here is a link to an image: http://dl.dropboxusercontent.com/u/33642054/image/fotd_20130107_zoom_1200_5.... The Fractint compatible PAR file for the image is: fotd_20130107_zoom { ; Exported from Fracton. reset=2004 type=formula formulafile=fracton.frm formulaname=F_20140108_1006 passes=1 float=y center-mag=-0.000485015869256406/0.002209586310987\ 4/144824000767.9423/1/-90/0 params=89.59999999999999/0/89.59999999999999/0/-1.\ 7435/0.0001/0.000175/0.073883/2.003/0 maxiter=1800 inside=0 logmap=265 colors=00001c02c23c45c66c97cB9cDAcGBcIDcLEcNFcPHcS\ IcUJcWLcZMc`NcbPceQcgRcjTc987JGETPL1A22K54V75dA6nC\ 8yF22644D66K88RAAYCCdEEkHHr1203415727938C3AE4CG5EJ\ 6FL6HO7JQ8LS9MV9OXAQ_BSaCUdD1213535857A69D8BGADJBF\ LDHOFJRGLUIMWKOZLQaNScPUfQWiSYlU_nVaqXctZew`120351\ 5827B39E3AH4CK5EN6GP6IS7JV8LY9N`9PcARfBTiC320741B6\ 2E82IA3MC4PE4TG5XI61403804D16H17L29Q2AU3CY3Db4Ff4H\ k540590BE0HJ1MO1ST1YY1cb2hg2nl2tq3z331663A95DD7GG9\ KJBNMCRQEUTGXWI`_KcbMgeNjhPmlRqoTtrVxvX00200400600\ 800A11200C00E00G00I00K00M00O00Q00S00V68TDHRJPPQYMW\ eKbnIiwFbsGWoHOkIHgJ9bLAbLCbLEaMehSimV211532844A65\ D87G98IB9QDBTECWGEYIF`JGcLIeNJhILeLMjONfQPbTQcWS84\ CH8OQC`1333665A97DC9GFBKIDNLFQOHURJXUL_XNc_PfbRje1\ 103314516728829A3BC3CE4EG4GH5HJ5JL6KN6MO7OQ7PS8RU8\ TW90211431652972B93DB4FD4IF5KG5MI6OK7RM7TO8VQ8XS9_\ U9aVAcXBeZBh`CjbCldDnfEqh } frm:F_20140108_1006 { ; time=0:02:15.00 SF5 at 2000MHZ ; draws all slices of Julibrot pix=pixel,u=real(pix),v=imag(pix), a=pi*real(p1*0.0055555555555556), b=pi*imag(p1*0.0055555555555556), g=pi*real(p2*0.0055555555555556), d=pi*imag(p2*0.0055555555555556), ca=cos(a),cb=cos(b),sb=sin(b),cg=cos(g), sg=sin(g),cd=cos(d),sd=sin(d), p=u*cg*cd-v*(ca*sb*sg*cd+ca*cb*sd), q=u*cg*sd+v*(ca*cb*cd-ca*sb*sg*sd), r=u*sg+v*ca*sb*cg,s=v*sin(a),esc=imag(p5)+9, c=p+flip(q)+p3,z=r+flip(s)+p4: z=z^(real(p5))+c, |z|<esc } -- Mike Frazier www.fracton.org