formula            {
  reset=1960 type=formula 
  formulaname=Formula821 center-mag=2.8e-006/8.465e-006/0.1610499
  viewwindows=4.2/0.75/yes/300/0
  colors=cye<62>0A40A41B5<55>cyeCNO<4>7GK5EJ6FK<29>dxxfzzfyy<29>DCRCAPDBQ<\
  29>ieskgtjft<29>47S
  }

frm:Formula821 {; Giuseppe Zito
 z = pixel ,
c1 = 0.376928
d4 = -0.964622
d7 = 0.631211
d10 = -0.762901
d12 = 0.388134
d13 = 0.077604
d14 = -0.916567
  : 
 x = real(z), y = imag(z)
s0 = x
s0 = s0 *c1
s0 = s0 +y
newx = s0 
s0 = x
s0 = s0 +y
s0 = s0 /d4
s0 = s0 *x
s0 = s0 +d7
s0 = s0 *y
s0 = s0 *x
s0 = s0 -d10
s0 = s0 +d12
s0 = s0 *d13
s0 = s0 *d14
s0 = s0 -x
newy = s0 
z = newx + flip(newy)
 newx < 4 && newx > -4 && newy < 4 && newy > -4 
}