# File lib/wikicloth/wiki_link_handler.rb, line 31
  def section_list(root=nil)
    ret = []
    root = sections[0].children if root.nil?
    root.each do |child|
      ret << child
      unless child.children.empty?
        ret << [section_list(child.children)]
      end
    end
    ret.flatten
  end