PDS_VERSION_ID                   = PDS3

RECORD_TYPE                      = STREAM

OBJECT                           = TEXT
  PUBLICATION_DATE               = 2009-08-20
  NOTE                           = "Description of the INDEX
                                   directory contents."
END_OBJECT                       = TEXT
END

                    INDEX Directory Contents

The INDEX directory contains tabular index files describing the
content of the data set.  Each tabular index is accompanied by
a detached PDS label.  The index files present depend upon the
files in the data set.

Required files present in all data sets:
---------------------------------------

INDXINFO.TXT - The file you are reading.

INDEX.TAB     - Main INDEX table listing all label files

INDEX.LBL     - PDS Label for the main INDEX table

    N.B. The INDEX.TAB file contains columns for the
    RELEASE_ID and REVISION_ID.  This is a system
    used by the PSA to incrementally build up a data
    set and to provide a mechanism by which files can
    be updated without reconstructing the entire data
    set. The system is not used by all missions. For
    those missions not using the concept, a default
    value of RELEASE_ID=0001 REVISION_ID=0000
    is used in the INDEX label and table.

Optional files, depending on the content of the data set:
--------------------------------------------------------
BROWSE_INDEX.TAB     - INDEX table listing all label files in the BROWSE
directory

BROWSE_INDEX.LBL     - PDS Label for the BROWSE_INDEX table

GEO_XXXX.TAB  - Geometry and position index file, where
                   XXXX = the reference target used to compute the
                   geometric parameters.

GEO_XXXX.LBL  - PDS Label for the GEO_XXXX.TAB index file

Other index files can be defined by the data set developer to list
products in their data set and to provide valuable information and
relate various parameters to their data products. These are
individual to each data set.

                 Notes on Using the Index Tables
                 -------------------------------
     Each index table contains one row (record) for each data product
on the volume.  The table is formatted so that it can be read directly
into many data management systems.  All fields are separated by commas
and character fields are enclosed in double quotation marks (").
Character fields are left justified and numeric fields are right
justified.  Each record ends with ASCII carriage return and line feed
characters.  This allows the table to be treated as a fixed length
record file on computers that support this file type and as a normal
text file on other computers.

     The PDS label file for each table describes the content and
structure of the fields in the index table.  This description includes
the name of each field, its format, and a brief definition.  The
values for start byte and number of bytes listed in the label file do
not include commas between fields or quotation marks surrounding
character fields.
