PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM

OBJECT                = TEXT
  PUBLICATION_DATE    = 2003-10-30
  NOTE                = "Description of contents of INDEX directory"
END_OBJECT            = TEXT
END

The INDEX directory contains an index table, INDEX.TAB, that lists
every data product in the archive. The index table is accompanied by a
PDS label, INDEX.LBL, that describes the format of the table.

The index table is an ASCII text file. Each line (record) in INDEX.TAB
contains information about a data product in the archive. The record
includes the path and file name of the PDS label that describes the
data product. Some data products consist of multiple files described
by a single PDS label, but there is only one record in the index table
per product, even if it is spread across multiple files. 

Each line in INDEX.TAB consists of a set of fixed-length fields
delimited by commas. INDEX.LBL tells the start byte, number of bytes,
and data type of each field. Character fields are enclosed in double
quotation marks (").