code: function argPoint(bbox, args) {
  
          var x = args.x;
          if (util.isString(x)) {
              x = parseFloat(x) / 100 * bbox.width;
          }
  
          var y = args.y;
          if (util.isString(y)) {
              y = parseFloat(y) / 100 * bbox.height;
          }
  
          return g.point(x || 0, y || 0);
      }
docs: Creates a point stored in arguments