There's a break between the flag combinations without binary and those with binary. This seems like an arbitrary and meaningless distinction.

Also the rows are in an inconsistent order. The rows without in are the same as the rows with in (except that the row with no flags set is invalid), but that's very unclear because some of them got shuffled around. Suggest reordering both "a" rows after the second "w" row. This would also group together the rows with the same stdio equivalent.