As a digressive aside, if you are interested in sciapods and other mediaeval beasts, or mediaeval topics in general, pick up a copy of the 2003 book "Baudolino," which tells a fabulous tale involving Prester John (the lost Christian king of the East) and touches upon all the major themes of the day (early 12th century Constantinople): The Fourth Crusade; the troubadours; the legend of the Holy Grail; the rise of the cathedral cities; the position of Jews; the market in relics; the local rivalries that made Italy so vulnerable to outside attack; the perennial power struggles between the pope and the emperor, and the geographic location of the Earthly Paradise. One of the main characters is a sciapod! This mythical epic story is by Umberto Eco, of "Foucault's Pendulum" and "The Name of the Rose" fame. All of them are worth reading.
x° N/S y° E/W ↦ x° S/N (180 − y)° W/E
A Village Street Slips off the Subway Map
It never ceases to amaze me how things are decided in this world, cartographic decisions included.