In the abstract, perhaps "describes" could be "specifies"/"defines"? It might make sense to provide references to the definition of tags 260 and 261. I had to look them up. "was removed in this specification" -> "is removed in this specification"? "When applied to an array that starts with a number"? Is 'number' the correct terminology? I confused it with the tag number? What would happen to tags 260 and 261. Are they now discouraged/forbidden? Are they meant to co-exist with 52 and 54?