diatom

  package 'box'
    density 2
    insert box
      p1 = 45,35,0
      p2 = 55,90,20
    endinsert
  endpackage

  package 'cylinder'
    density 1
    insert cylinder
      ce1 = 50,0,0
      ce2 = 50,0,20
      r = 40
      ri = 30
    endinsert
  endpackage

enddiatom
