TLOG — Page 2-19. Description of write_recordlist

2. Page 2-19. Description of write_recordlist says "In this case, only the "info" field (event content) of the RecordData struct is written to the log, the LogRecord id and logging time will be assigned by the log." Why doesn't it say anything about attr_list field of RecordData struct? Seems to me that this field (list of name/value pairs) can also be modified and written to the log.