(In the United States,) Keebler chocolate-chip cookies list egg as an ingredient. But they list it after salt, meaning that the amount of egg in the product is less than (well, not more than) the amount of salt. From the sodium content one can figure out that the amount of salt is not more than about five-sixth of a percent (or less than four grams per pound of cookies), so the amount of egg is also not more than that.
Why would they put in such a small quantity of egg? What does adding that small amount of egg do for the cookies, that they couldn't leave it out?