Happy July 4th! Bits and pieces of self-similarity all over the place. Go to http://maxitersfractalfollies.blogspot.com for the ready made version. To the dark imagination it might look like worms. fract292.gif { ; blank ; blank ; calctime 0:09:31.38 ; created Jul 04, 2010 ; Fractint Version 2004 Patchlevel 9 reset=1900 type=formula formulafile=fract002.frm formulaname=mask function=asin/atan/tan center-mag=+0.06954360169420207/-0.10547296438733110/190405.8/1/90/3.885\ 78058618804789e-016 params=-0.125/2.125/2.125/-0.125 float=y maxiter=1200 inside=0 cyclerange=0/255 colors=000430320220210110000000100200310310420520620730730840940A40B50B5\ 0C60D60E60E70F70G80H80I80I90J90KA0LA0MA0MB0NB0OC0PC0QC0QD0RD0SE0TE0UE0UF\ 0VF0WG0XG0XH0YH0ZH0_I0`I0`J0aJ0bJ0cK0dK0dL0eL0fL0gM0hM0hN0iN0jN0kO0lO0lP\ 0mP0nP0oQ0oQ0pR0qR0rR0sS0sS0tT0uT0vT0wU0wU0xV0yV0zW0zW0zX0zY0zZ0z_0z`0za\ 0zb0zc0zd0ze0zf0zg0zh0zi0zj0zk0zl0zm0zn0zo0zp0zq0zr0zs0zt0zu0zv0zw0zx0zy\ 0zz0zz4zz8zzCzzGzzKzzOzzSzzWzzZzzbzzfzzjzznzzrzzvzzzzzvzzrzznzzjzzfzzbzz\ ZzzWzzSzzOzzKzzGzzCzz8zz4zz0zy0zx0zw0zv0zu0zt0zs0zr0zq0zp0zo0zn0zm0zl0zk\ 0zk0zj0zi0zh0zg0zf0ze0zd0zc0zb0za0z`0z_0zZ0zY0zX0zW0zW0yW0xW0wV0wV0vU0uU\ 0tU0sT0sT0rS0qS0pS0oR0oR0nQ0mQ0lP0kP0kP0jO0iO0hN0gN0gN0fM0eM0dL0cL0cL0bK\ 0aK0`J0_J0_J0ZI0YI0XH0WH0VG0VG0UG0TF0SF0RE0RE0QE0PD0OD0NC0NC0MC0LB0KB0JA\ 0JA0IA0H90G90F80F80E70D70C70B60B60A50950850740740630530 } frm:Mask = {; Ron Barnett [70153,1233] ; try fn1 = log, fn2 = sinh, fn3 = cosh ;P1 = (0,1), P2 = (0,1) ;Use floating point z = fn1(pixel): z = P1*fn2(z)^2 + P2*fn3(z)^2 + pixel, |z| <= 4 } Roger Alexander _________________________________________________________________ Look 'em in the eye: FREE Messenger video chat http://go.microsoft.com/?linkid=9734386