Jim, I already have a formula named SliceJulibrot6 in my collection of your formulas. This one: SliceJulibrot6 { ; draws slices of DivideBrot init: 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) aa=real(@p5) bb=imag(@p5)+0.00000000000000000001 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) c=p+flip(q)+@p3 z=r+flip(s)+@p4 loop: z=sqr(z)/(z^(-aa)+bb)+c bailout: |z|< 1000000 } Would you please rename your new formula SliceJulibrot7? Brian Prentice