PDS_VERSION_ID                   = PDS3                                      

                                                                             

RECORD_TYPE                      = STREAM                                    

                                                                             

 OBJECT                           = TEXT                                     

  PUBLICATION_DATE               = 2013-05-03                                

  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.