Ruser
This removes user from the user list.
/ruser [levels] <nick | address> [type]
If you specify levels then these levels are removed from the current access levels of this user. If all levels a user user has have been removed, the user will be removed too. If you specify a type then the users address is looked up with a /userhost and any users in the users list matching this address are removed.
If you put an exclamation mark after the nick (e.g. /ruser foobar!), it removes all users with an address beginning with foobar!.
Example
ruser Dana
This would remove Dana from your user list.
ruser Dana 2
This would remove all users matching *!*@staff.quakenet.org as type 2 of Dana's address (Dana!dana@staff.quakenet.org) is *!*@staff.quakenet.
See Also
To add a user by his address, use /guser.
If you want to remove all users from the remote users list with a specified general access level, look at /rlevel.
To use these levels, take a look at the $level identifier.
To use the information you have stored, use the $ulist identifier.
$mask gives you a view over all address types.