code: def build_howto(request=None):
      
      how_tos = {}
  
      for app in settings.INSTALLED_APPS:
          mod = import_module(app)
          app_dir = os.path.dirname(mod.__file__)
          how_to_file = os.path.join(app_dir, 'how_to.md')
  
          if os.path.exists(how_to_file):
              contents = open(how_to_file).read()
              how_tos[app] = markdown.markdown(contents)
  
      return render(request, 'admin/how-to/index.html', {'how_tos': how_tos})
docs: Searches for "how_to.md" files in app directories.
      Creates user-friendly admin how-to section from apps that have them.