This is the anniversary of 9/11, I will be brief. A classical mandelbrot rendered with the Carlson stalk plotting algorithm and outside=summ.Ready made at http://maxitersfractalfollies.blogspot.com. fract380.gif { ; carlson mandelbrot ; blank ; calctime 0:02:35.28 ; created Sep 11, 2010 ; Fractint Version 2004 Patchlevel 9 reset=2004 type=formula formulafile=_m.frm formulaname=Mandel_Rings center-mag=-0.349298/-0.0653489/0.7966487/1/-30.0000000000036948/-3.3535\ 3828040396706e-011 params=0.08/0/2/128 float=y maxiter=1500 inside=0 outside=summ colors=00A00Azbezbeyadyady`cy`bx_bxZaxZaxY`wY_wX_wXZwWZvWYvVXvUXvUWuTWuT\ VuSUuSUtRTtRTtQStPRsPRsOQsOQsNPrNOrMOrMNrLNqKMqKLqJLqJKpIKpIJpHIpHIoGHoF\ HoFGoEFnEFnDEnDEnCDmCCmBCmABmABl9Al99l89l88k78k77k66k56j55j45j44j33i33i2\ 2i22i11h00h00g00g00f00e00e00d00c00c00b00b00a00`00`00_00Z00Z00Y00X00X00W0\ 0W00V00U00U00T00S00S00R00Q00Q00P00P00O00N00N00M00L00L00K00J00J00I00I00H0\ 0G00G00F00E00E00D00C00C00B00A00mmzmmzllzkkyjjyiixhhxggxffweeweevddvccvbb\ uaau``t__tZZtYYsYYsXXrWWrVVqUUqTTqSSpRRpQQoPPoPPoOOnNNnMMmLLmKKmJJlIIlHH\ kHHkGGjFFjEEjDDiCCiBBhAAh99h99g88g77f66f55f44e33e22d11d00c00c00c00b00b00\ a00a00a00`00`00_00_00Z00Z00Z00Y00Y00X00X00W00W00W00V00V00U00U00U00T00T00\ S00S00R00R00R00Q00Q00P00P00O00O00O00N00N00M00M00L00L00L00K00K00J00J00J00\ I00I00H00H00G00G00G00F00F00E00E00D00D00D00C00C00B00B00A } frm:Mandel_Rings {; Copyright (c) Paul W. Carlson, 1998 z = w = k = iter = range_num = bailout = 0 c = pixel ring_width = real(p1) num_ranges = real(p2) colors_in_range = imag(p2) index_factor = (colors_in_range - 1) / ring_width : w = w * w + c ; dist = abs(|w|-.25) IF (dist < ring_width && iter > 0) bailout = 1 z = index_factor * dist + range_num * colors_in_range + 1 ENDIF range_num = range_num + 1 IF (range_num == num_ranges) range_num = 0 ENDIF iter = iter + 1 z = z - iter bailout == 0 && |w| < 1.0e20 ;SOURCE: carlson2.frm } Roger Alexander