Stone bar-tracery, an important decorative element of Gothic styles, first was used at Reims Cathedral shortly after 1211, in the chevet built by Jean D'Orbais.
Tracery n ablaɣ n tahunt, iyyan daɣ titbaqqa n iššikilan n adaloj assohen n Gothic, wa ezzaran ijja daɣ Katedral tan Reims darat 1211 a andarran, daɣ Chevet iday Jean D’Orbais