ircII help: mode
Usage: MODE *|<channel> [+|-]<modechars> [<parameters>] MODE *|<channel> [+|-]b [<nick>[!<user>[@<host>]]] MODE <nick> [+|-]<umodechars> Mode command is quite complicated and it allows channel operators to change channel mode, or any user to change their personal mode. For a channel mode, <modechars> is one of the following: i - channel is invite only k <key> - Adds join key <key> to the channel. Keys can added or removed (MODE <channel> -k <key>), but not changed. l <number> - channel is limited, where <number> is the maximum number of users allowed m - channel is moderated (only channel operators talk) n - No MSGs to the channel are allowed from someone outside the channel. o <nick> - Makes <nick> a channel operator p - channel is private s - channel is secret Note: On 2.8 servers you cannot set both +p and +s modes t - topic limits, only the channel operators may change it v <nick> - Gives someone a voice to talk on a moderated channel. A + or - sign determines whether the specified mode should be added or deleted. If you supply * as channel name, modes will apply to your current channel. The second form of the MODE command allows you to ban somebody from a channel. This is done by specifying a sting of the form nick!user@host. For example: MODE #MyChannel +b *!*@gus.* bans everybody from the channel who is on IRC from any machine whose name is gus. MODE #MyChannel +b netw1z bans anybody using the nickname netw1z. MODE #MyChannel +b *!merklin@* bans anybody whose user name is merklin. MODE #MyChannel +b email@example.com bans the user firstname.lastname@example.org from the channel whenever he is using the nickname "jerk". If you are channel operator, you can list the bans in effect on a channel: MODE #MyCHannel b The third form of the MODE command allows you to modify your personal parameters. You can precede any combination of the following with + or - (+to switch that mode on, - to switch it off). o - IRC operator status. You may not turn this on with mode. To assert operator status, you must use OPER w - Receive WALLOPS (messages directed at all operators. see WALLOPS. s - Receive server notices. This includes KILL notices and notices about what is happening with links to the local server. i - Render yourself invisible. This prevents you from being seen in WHO and WHOIS information, unless somebody specifies your exact nickname with WHOIS. Note: Attempting to avoid a ban placed on you may result in forcible removal from IRC or being banned from your server.