Available HELP topics (some of them are only accessible to IRC operators):

ACCEPT          ADMIN           AWAY            CHALLENGE
CLOSE           CMODE           CONNECT         DIE
DLINE           ERROR           ETRACE          GLINE
GUNGLINE        HASH            HELP            INF
INVITE          ISON            JOIN            KICK
KILL            KLINE           KNOCK           LINKS
LIST            LOCOPS          LUSERS          MAP
MODULE          MOTD            NAMES           NICK
NOTICE          OPER            PART            PASS
PING            PONG            POST            PRIVMSG
QUIT            REHASH          RESTART         RESV
SET             SQUIT           STATS           TIME
TOPIC           TRACE           UMODE           UNDLINE
UNKLINE         UNRESV          UNXLINE         USER
USERHOST        VERSION         WALLOPS         WHO
WHOIS           WHOWAS          XLINE
