Thank you for these replies! Guess I just had wrong keywords when I tried to search.

I'm making this tilemap thingie when the problem struck me. I used this code to save the map for y = 1 , mapheight do file:write("\n") for x = 1, mapwidth do if x == 1 then file:write(map[x][y][0]) else file:write("," .. map[x][y][0] ) end end end and the text it generates looks ...