# File lib/doc_book_printer.rb, line 91
  def replace_html_tags text
    @html_tag_mapping.each do |html, docbook|
      if docbook.nil?
        text.gsub! "<#{html}>", ""
      else
        text.gsub! "<#{html}>", "<#{docbook}>"
        text.gsub! "</#{html}>", "</#{docbook}>"
      end
    end
  end