docs: def latex(source: str):
      """
      Add a mathematical equation in latex math-mode syntax to the display.
      Instead of the traditional backslash escape character, the @ character is
      used instead to prevent backslash conflicts with Python strings. For
      example, \\delta would be @delta.
  
      :param source:
          The string representing the latex equation to be rendered.
      """
      r = _get_report()
      if 'katex' not in r.library_includes:
          r.library_includes.append('katex')
  
      r.append_body(render_texts.latex(source.replace('@', '\\')))
      r.stdout_interceptor.write_source('[ADDED] Latex equation\n')