An
N:Line is a line on an
ircd's setup file, describing which
IRC servers are allowed to it, and is named after the way the line starts with N:...
Format:
N:hostname:password:server name::class
In cyclone at least, there's also (in no particular order) a K:Line, Q:Line, C:Line, O:Line, X:Line, A:Line, M:Line, Y:Line, I:Line, U:Line, L:Line, H:Line and a P:Line. There's also a G:Line