I'm the reading the book "Sayfaring". There are two waypoints I don't get the origins in the sentences.
"Boston has lifted a particularly intricate constellation of itself into the ether above New England. There is PLGRM, for the region’s history; CHWDH, LBSTA and CLAWW for its food"
"Even the region’s speech –WIKID, followed by PAHTI – seems to be mapped