An
M:Line is a line in an
ircd configuration file giving
information about the
IRC Server -
Format:
M:server address:ip:description:port
In cyclone at least, there's also (in no particular order) a K:Line, Q:Line, C:Line, N:Line, X:Line, A:Line, O:Line, Y:Line, I:Line, U:Line, L:Line, H:Line and a P:Line. There's also a G:Line