def meter_descriptions(meters)
      content_tag(:ul) do
        meters.keys.sort.each do |name|
          concat content_tag(:li, meter_description(name))
        end
      end
    end
def meter_descriptions(meters)
      content_tag(:ul) do
        meters.keys.sort.each do |name|
          concat content_tag(:li, meter_description(name))
        end
      end
    end
Constructs a list of meter descriptions