It essentially laid out what north, south, east and west looked like, and it also enabled you to kind of create new directions, like northwest, southeast, what have you. And for the first time, they knew where they were going.
Básicamente, señala cómo lucen norte, sur, este y oeste. También te permite crear nuevas direcciones como noroeste, sudeste, etc. Y por primera vez, sabían hacia dónde iban.