# File lib/kramdown/converter/html.rb, line 275
      def convert_footnote(el, indent)
        number = @footnote_counter
        @footnote_counter += 1
        @footnotes << [el.options[:name], el.value]
        "<sup id=\"fnref:#{el.options[:name]}\"><a href=\"#fn:#{el.options[:name]}\" rel=\"footnote\">#{number}</a></sup>"
      end