On_the_Diagonal    { ; Fractal of the day, 05-03-01 Rating (4)
                     ; time=0:00:59.04 -- SF5 on P200
  reset=2001 type=formula 
  formulaname=MandelbrotMix4 function=recip passes=b
  center-mag=+0.25627508097681630/+0.057075232315386\
  08/6988.571/1/169.999
  params=0.75/-2/-1/-2.5/-75/300 float=y maxiter=600
  inside=255 outside=tdis periodicity=10
  colors=000_ka`i_ahZbfYceXddVebUfaTg`Sf_TeZTdYTdXTc\
  WTbVTaUTaTT`SU_RU_QUZPUazzazzXMUWLUVKVVJVUIVTHVSGV\
  SFVREVQDVOCSQDVREXTF_UFaWGcXHfZHhcMqcMqdMrdOqePthO\
  vjMyhPxfRxdTxbVx`XwZZwY`wWbwUdvSfvQhvOjvNlvPnwQpwS\
  rwTtxUvxWxxXyyZzy_zy`zx_zwZzvYztXysXwqWvpVtnUsmTql\
  TojSniRlgQjfQidPgcOfbNd`Mb_MaYL_XKYVJXUJVSIURHSQGQ\
  OFONFLLEIKDGICDHCDGGFIKGJNHLRIMUJOYJPaJRdJShKUkKVo\
  KXrKY`RdKYj1cr3dp4dn5el6ej7eh8ffAfdBfbCg`DgZEhXFhV\
  HhTIiRJiPKiNLjLMjJOkHPkFQkDRlBSl9Sm9Tl8Uk8Vk8Wj8Wi\
  8Xi8Yh8Zg8_g8_f8`e8ae7bd7bc7cc7db7ea7fa7f`7g_7h_7i\
  Z7iZ7h_Ag_Df_Ge_Jd`Mc`Pb`Sa`V`aY_a`ZacYafXbiWblVbo\
  UbrSavTbuTctTctTdsTerTerUfqUgpUgpUhoUhoUinVjmVjmVk\
  lVlkVlkVmjWniWniWohWohWpgWqfXqfXreXsdXsdXtcYwfXtcX\
  r`WpZWnWVkUViRUgPUeMUcKWbJYbI_aHaaGc`Fe`Fg_Ei_DkZC\
  mZBnYAoZBoZCo_Do_Eo_Fo`Go`GoaHoaIoaJobKobLocLocMoc\
  NpdOpdPpdQpeQpeRpfSpfT000
  }

frm:MandelbrotMix4 {; Jim Muth
a=real(p1), b=imag(p1), d=real(p2), f=imag(p2),
g=1/f, h=1/d, j=1/(f-b), z=(-a*b*g*h)^j,
k=real(p3)+1, l=imag(p3)+100, c=fn1(pixel):
z=k*((a*(z^b))+(d*(z^f)))+c,
|z| < l
}