difference => except
difference => except

key/keyRef become elements rather than attributes.

hanshuebner/jing-trang,dmj/jing-trang,dmj/jing-trang,brand/jing-trang,hanshuebner/jing-trang,brand/jing-trang,dmj/jing-trang,hanshuebner/jing-trang,brand/jing-trang