***** File PATHTABL.TXT The PATHTABL.* files document the full volume and subdirectory specification for each file on this disc. The table itself (PATHTABL.IDX) is a delimited table, with fields for filename, extension and version number, date and time of observation, volume name and five subdirectory levels. Only non-blank values in the subdirectory fields contribute to the path specification for a file. No delimiters are included in the fields for separating subdirectory levels, as the character to use is operating system specific. The version number is in a separate (numeric) field. Some CD-ROM drivers (such as the Microsoft Extensions under MS-DOS) ignore the version number when accessing the disc. Others (e.g., Unix) append the version number as a required part of the file name. In any event, the version number is coded on the disc, and is so documented in the path table. Its value is always "1" on these discs.