1. With the overworld editor, copy & paste the level tiles in the map16 area into the second page.



2. Now you can use a layer 1 tiles in the second page.



3. The entrances will be level number + 1E0 for the layer 1 tiles of the 2nd page.
If you set a level number into 12, then the level will lead to 1F2.



4. Some settings won't work for levels 1E0-1F7 (see below),
because they are shared by the levels of the same number (e.g. level 1 and 1E1).
In ExtraTransLVData.asm there are all things you will need to modify those options of levels 1E0-1F7.


Everything is unchanged for ordinary levels (e.g. level 1).