Usage: BOOK -[a|d|l] <nick email> 

  Creates/lists an addressbook fot instant emailing in combination
  with /IMAIL.

   Examples:
   /BOOK -a hsoc hsoc@irc.gr     adds handle hsoc
   /BOOK -d hsoc                 deletes hsoc from your address book
   /BOOK -l                      lists all entries in address book

See also: [IMAIL]
