[Butz]

make a file called yourworldnamemap.txt

in this file put the level names in quotes across each line
(Notepad works nice because it you can easily turn off word wrap to keep things organized)
Like this..

"level-a-1.graal","level-a-2.graal",...and so on..on the last level to be in that row, DO NOT put a comma after it.
A 2x2 map would be something like this...

"level-a-1.graal","level-a-2.graal"
"level-b-1.graal","level-b-2.graal"

put an NPC in a level that sets the map to use that file

load the level so it tries to set the map...

bring up the editor, hit 'm' and if your text file is set up correctly, it will create a png of your map....

That should be it...if you have any more problems, PM me...