Hi GF. I've noticed that some of our senior members use the British style and place them outside the quotes. I read the rule you refer to and use the so-called American system, but there are a few situations in which I bend it.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
GramerFreekThe sign said "NO TRESPASSING".Maybe he is just trying to show that the wording on the sign did not have a period, so he put the period outside the quotations.