on *:TEXT:!world:#:{
  if ($nick isvoice $chan) {
    .notice $nick %world [ $+ [ $chan ] ]
  }
}
on *:TEXT:!setworld *:#:{
  if (!$3) {
    .msg $nick Use !Setworld #channel-name World-Number
  }
  elseif ($nick isop $2) {
    set %world [ $+ [ $chan ] ] $3
  }
}