# File lib/mongrel/cgi.rb, line 127
    def out(options = "text/html", really_final=@default_really_final)
      if @out_called || !really_final
        # don't do it more than once or if it's not the really final call
        return
      end

      header(options)

      @response.start status do |head, body|
        send_cookies(head)
        
        @head.each {|k,v| head[k] = v}
        body.write(yield || "")
      end

      @out_called = true
    end