isosurface { //-------------------------------------------------------------

  function{  abs(x)+abs(y)+abs(z)-2 }

  contained_by { box { -2, 2 } }
  accuracy 0.003
  max_gradient 5

  texture{ pigment{ color rgb<1,0.75,0.45>}
           finish { specular 0.2 phong 1}}
  scale 0.5
  rotate<0,5,0>
  translate <0, 1.3, 0>
} // end of isosurface -----------------------------------------------------