# File lib/rir/query.rb, line 40
      def to_s
        h = "<parameters>\n"
        h += "<memory>#{@memory}</memory>\n"
        h += "<index>#{@index_path}</index>\n"
        h += "<count>#{@count}</count>\n"
        unless @baseline.nil?
          h += "<baseline>#{@baseline}</baseline>\n" 
        else
          h += "<rule>#{@rule}</rule>\n"
        end
        h += "<queryOffset>#{@offset}</queryOffset>\n"
        h += "<runID>#{@run_id}</runID>\n"
        h += "<printQuery>#{@print_query}</printQuery>\n"
        h += "<printDocuments>#{@print_docs}</printDocuments>\n"

        h
      end