There is an in-game method, or at least I think that’s what he was talking about… Using debug (first go into ? menu, then 1 for control layout, then scroll to the bottom of the list, debug menu is there, then use + to assign a key to an unassigned button (I usually use Z for debug menu…), then in debug menu there is a map editor option…
Not completely sure that’s what he was talking about though
And of course I’ve never used debug a day in my life, at least I haven’t used it since I began chronically telling blatant lies like the previous sentence…
Its addictive…