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

ACCEPT          ADMIN           AWAY            CHALLENGE
CLOSE           CMODE           CONNECT         DIE
DLINE           ERROR           ETRACE          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
