In Train Simulator Classic, the MapTiler(https://rail-sim.de/forum/filebase/entry/8743-maptiler/) exists. This tool is a node.js proxy, that uses a free Google Maps API, that gives low-resolution images. All the requests from TS show up in a Request Monitor Tool like (https://www.charlesproxy.com/). TSW Editor seems to be working completely differently, does anybody know, how it works?
