SET <option> <value>

<option> can be one of the following:
  ADMINSTRING - Sets string shown in WHOIS for admins
  AUTOCONN    - Sets auto-connect on or off for a particular
                server
  AUTOCONNALL - Sets auto-connect on or off for all servers
  FLOODCOUNT  - The number of lines allowed before
                throttling a connection due to flooding
                Note that this variable is used for both
                channels and clients
  IDENTTIMEOUT- Timeout for requesting ident from a client
  IDLETIME    - The number of seconds a client can be idle
                before disconnecting them
  MAX         - Sets the number of max connections
                to <value>.  (This number cannot exceed
                HARD_FDLIMIT in config.h)
  OPERSTRING  - Sets string shown in WHOIS for opers
  SPAMNUM     - Sets how many join/parts to channels
                constitutes a possible spambot.
  SPAMTIME    - Below this time on a channel
                counts as a join/part as above.
  SPLITMODE   - Sets splitmode to <value>:
                 ON   - splitmode is permanently on
                 OFF  - splitmode is permanently off
                 AUTO - ircd chooses splitmode based on 
                        SPLITUSERS and SPLITNUM
  SPLITUSERS  - Sets the minimum amount of users needed to
                deactivate automatic splitmode.
  SPLITNUM    - Sets the minimum amount of servers needed to
                deactivate automatic splitmode.