docs: function(rect) {
              // Truncate to next, lower integer, but don't modify if already integer
              rect._x = Math.floor(rect._x);
              rect._y = Math.floor(rect._y);
              // Ceil to next, higher integer, but don't modify if already integer
              rect._w = Math.ceil(rect._w);
              rect._h = Math.ceil(rect._h);
              return rect;
          }