Forums Scripts & Popups Whats $ for 'set by'?

clear.channel {
  if $chan($chan).topic == $null { echo $colour(info) -gta * Cleared channel $chan }
  else {
    echo $colour(info) -gta * Cleared channel $chan
    echo $colour(topic) -gta *  Topic is ' $+ $chan($chan).topic $+ '
    echo $colour(topic) -gta *  Set by $
  }
}