Q. Do you have a policy about this pet peeve of mine? I think it is fine to write something like “My office hours are 10–11 AM,” but it really seems wrong when the en-dash is used in place of the word and or to. How can we make the world stop writing “My office hours are from 10–11 AM” or “My office hours are between 10–11 AM”?

A. We do have such a policy! (Please see CMOS 6.78.) Unfortunately, we have no way to make the world follow it.