# File r4tw.rb, line 668
  def store_to_s
    # not sure about this bit. breaks some tests if I put it in

    #((@use_pre and @tiddlers.length > 0) ? "\n" : "") +

    @tiddlers.sort_by{|t| t.name}.inject(""){ |out,t|out << t.to_div(@use_pre) << "\n"}
  end