Comment by mjmas

They use Creo it seems:

  ISO-10303-21;
  HEADER;
  FILE_DESCRIPTION((''),'2;1');
  FILE_NAME('DIGAI_1_1_1_1_1_1_1','2025-01-07T11:51:29',('\X2\7B26836394A6\X0\'),(
  ''),'CREO PARAMETRIC BY PTC INC, 2022073','CREO PARAMETRIC BY PTC INC, 2022073',
  '');
  FILE_SCHEMA(('CONFIG_CONTROL_DESIGN'));
  ENDSEC;