code: function(env, arr) {
          if (arr && arr.length == 4) {          
              env.minx = arr[0];
              env.miny = arr[1];
              env.maxx = arr[2];
              env.maxy = arr[3];
          }
      }
docs: Method: parseEnvelope
  Parse an array of coordinates into an ArcXML envelope structure.
  
  Parameters:
  env - {Object} An envelope object that will contain the parsed coordinates.
  arr - {Array(double)} An array of coordinates in the order: [ minx, miny, maxx, maxy ]