// declare a texture of a shape's surface (goes inside an object)
  // any of the attributes can be changed, or left out (default)
  texture
  {
    // pigment - attributes for surface color
    pigment
    {
      // agate, wood, checker, color, gradient…
     }
    // normal - attributes for surface “texture”
    normal
    {
       // bumps, dents, ripples, bump_map...
     }
    // finish - attributes for surface finish or shininess
    finish
     {
       // phong, specular, reflection, diffuse, metallic...
     }
    // material_map, tiles…
 }