Usage: ON [#|+|-|^|&|@]ENCRYPTED_PRIVMSG [-|^]<parameters> [action]
  This is activated whenever you recieve a PRIVMSG from someone that
  was encrypted with CTCP SED.

  The parameters for the action are as follows:
    $0    nickname of person who sent the MSG
    $1-   The message

  Note:  If you hook this event with the silent or quiet flags, then 
  the normal execution of the ON MSG events will be suppressed.
  This is useful if you wish to have special handling of messages that
  are encrypted that is different from your normal handling of incoming
  messages.  The same rules apply for this event as for MSG with respect
  to sending MSGs or NOTICEs.
