Thread:FixSRwiki/@comment-46261745-20200811012110/@comment-44256294-20200811140632

These are the results when searching for 迷宮ランク:

classes.jaf:962:	lint 迷宮ランク; 多田/■初期化.jaf:272:	国[no].迷宮ランク = ランク; あべ/C_国.jaf:116:int 国_迷宮ランク(int nNo) あべ/C_国.jaf:123:	return rfData.迷宮ランク;

Looks like it only shows up in the class definition, Ｄ国３ and 国_迷宮ランク. I'm guessing they intended to implement this feature at some point but then decided not to.