[Lomgren]

From what I understand, this is how you are supposed to make a map.
1. backup your copy of bigmap.txt (maybe call it bigmapspare.txt or something like that), and then change it by putting your level names in it, and make sure it is saved as bigmap.txt
2. open graal, and press M while you are in the editor. This should cause each of your levels to show briefly as it is added to the map. Save the map as whatever you want, and then open it to make sure it worked.
3. If it worked, you now have a 24 bit png map. You need to change it to an 8 bit png (since gifs are no longer used) so you can use it in graal. Use some sort of graphics editor to change it.
4. go back and replace the bigmap.txt with the proper version, since you have finished the map.

hopefully this should work.