Add/remove users or change their settings.
 
Add a user:
  USER + <handle> <*|channel> <nick|mask> <level> [password]
 
Remove a user:
  USER - <handle>
 
Change a users level:
  USER <handle> +<newlevel>
 
Add/remove a channel:
  USER <handle> +chan #channel
  USER <handle> -chan #channel
 
Add/remove a host mask:
  USER <handle> +host *!*my@*example.com
  USER <handle> -host *!*my@*example.com
 
Only one channel or one mask can be modified with each USER command.
 
Prefix flags with a "-" to disable them or a "+" to enable them.
 
User flags:
  AO         auto-op on/off
  AV         auto-voice on/off
  BNC        enable a user to use the bouncer feature
  ECHO       partyline echo on/off
  P<level>   change protection level (0-4)
             If disabling (-P), level is not needed.

Botnet user flags:
  NS         not shared, user is not set to botnet but may be
             overwritten by incoming shares
  RO         read only, user is not overwritten by incoming shares
 
Example: USER owner +ao -av
  Enables user autoop and disables autovoice for user "owner".
 
See also: protection, userlist, setaop, setavoice, setprot