Let's say I want, for whatever reason, to combine two or more packs into a mega-pack, so that the structure is:
Mega-Pack > Pack A > Ranks A1, A2, A3
Pack B > Ranks B1, B2, B3
This is relatively simple in NL: put both packs inside a mega-pack folder, remove "BASE" from their levels.nxmi files, and make a levels.nxmi for the mega-pack.
However, there's one small issue. NL's main menu displays the name and author of the current pack, just above where it displays NL's version number. This information is, correctly, read from either Pack A's or Pack B's info.nxmi, rather than that of the mega-pack.
Now, if I use the arrow keys to select a rank, I move from A1, A2, A3 to B1, B2, B3, but when I move onto the B ranks, the name of pack A is still displayed.