Comment by cjs_ac
It's one thing to know that the US, Canada and the Philippines don't use the same paper sizes as the other 190 countries in the world; it's quite another to be given a physical example for the first time in your life.
It's one thing to know that the US, Canada and the Philippines don't use the same paper sizes as the other 190 countries in the world; it's quite another to be given a physical example for the first time in your life.
You missed at least one other country that uses “US” paper sizes.