docs: def _enrich_with_par(par_nml, par_file):
      """Enrich a par namelist with the content of a file."""
      par_new = f90nml.read(str(par_file))
      for section, content in par_new.items():
          if section not in par_nml:
              par_nml[section] = {}
          for par, value in content.items():
              try:
                  content[par] = value.strip()
              except AttributeError:
                  pass
          par_nml[section].update(content)