old_contents: import markdown
  from .mdx_urlize import UrlizeExtension
  
  
  def render_content(text, gfm=False, context=None):
      """
      Renders the specified markup locally.
      """
      return markdown.markdown(text, extensions=[
          'fenced_code',
          'codehilite(css_class=highlight)',
          UrlizeExtension(),
      ])
  
new_contents: import markdown
  from .mdx_urlize import UrlizeExtension
  
  
  def render_content(text, gfm=False, context=None):
      """
      Renders the specified markup locally.
      """
      return markdown.markdown(text, extensions=[
          'fenced_code',
          'codehilite(css_class=highlight)',
          'toc',
          'tables',
          UrlizeExtension(),
      ])
  
subject: add offline extension: toc and tables