QuestionRe: your St. Louis Metrolink map... I wasn't sure from the way you phrased it, but the the Primary transfer point isn't represented by a P exactly, but by the square surrounding the circled-P (which simply indicates that it's a park&ride station). It just so happens there's only one transfer point so they happened to include the P in the legend for Primary Transfer Station.
AnswerWell, that’s exactly my point. If it’s the square that represents the primary transfer station, why show the black circle with a “P” in it as a part of that icon in the legend?