-Generate a new map
-Command: /c game.player.force.chart(game.player.surface,{{x = -4048, y = -4048}, {x = 4048, y = 4048}})
-Repeat the command.

-Look into the map view: notice that the map is being revealed in a spiral fashion
-If map is good
--save it into an autosave, then check the exchange string. (I want to get achievements while I play, so I have to recreate the map)
-If map is not good
--restart the map
--repeat


EDIT: The underlined part is why I made this topic in the General Discussions. Now it's clear that for some, even the warning is not enough. I made a suggestion about making the warning appear only once here: viewtopic.php?f=6&t=54455