@SYNTAX:umode@

This command is used to manage client's modes in the network.
Note that some of the modes the client cannot set itself.
The mode is added by adding + before the option(s) and removed
by adding - before the option(s).  The following channel user
modes are available:

    a        Unset all modes
    s        Unset server operator privileges
    r        Unset router operator privileges
    g        Set/unset to be gone (or use /AWAY command)
    i        Set/unset to be indisposed
    b        Set/unset to be busy
    p        Set/unset to await paging
    h        Set/unset to be hyper active
    t        Set/unset to be actually robot
    P        Set/unset to block incoming private messages.
             If set then only private message secured with
             private message keys are delivered.  Other
             private messages server automatically discards.
             This can be used to block unwanted private
             messages.
    w        Set/unset to reject anyone from watching you
    I        Set/unset invite blocking.  When set server
             does not send invite notifications to you

See also: CMODE, CUMODE, AWAY