only allow 7-bit ASCII for IGES and STEP header information
only allow 7-bit ASCII for IGES and STEP header information

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master