NavigationInfo{ type "EXAMINE" }
  Viewpoint{ fieldOfView .1 position 0 0 100 description "[100]"}
  Viewpoint{ fieldOfView .1 position 71 0 71 orientation 0 1 0 .785 description "[110]"}
  Viewpoint{ fieldOfView .1 position 56 56 56 orientation -1 1 0 .955 description "[111]"}
  DEF XForm Transform{ children[] }
  Script{
    field SFNode XForm USE XForm
    directOutput TRUE
  url ["javascript:
  function initialize() { 
    var i,j,k, n=3, is=1,js,ks, Str = '';
    for ( i= -n; i<= n; i++) {
      js = is; sj='';
      for ( j= -n; j<= n; j++) {
        ks = js;  sk = '';
        for ( k= -n; k<= n; k++) {
          if (ks > 0) sk += 'Cl{ trans '+i+' '+j+' '+k+'}';
          ks = -ks;}
        sj += sk; js = -js;}
      Str += sj; is = -is;}
    XForm.addChildren = Browser.createVrmlFromString(
  'PROTO Cl[ field SFVec3f trans 0 0 0]{'+
  'Transform{ translation IS trans children['+
  'Shape{ appearance Appearance{ material Material{ diffuseColor 1 1 0 } }'+
  'geometry Sphere{ radius 0.2 }}]}}' + Str );
  }"]
  }