• data_pointer : osgbpb_controlblock_s
• end_address : osfile_parameterblock_s
• exec_address : osfile_parameterblock_s
• file_handle : osgbpb_controlblock_s
• file_name : osfile_parameterblock_s
• load_address : osfile_parameterblock_s
• num_bytes : osgbpb_controlblock_s
• seq_pointer : osgbpb_controlblock_s
• start_address : osfile_parameterblock_s