PDS_VERSION_ID                     = PDS3                                     
RECORD_TYPE                        = FIXED_LENGTH                             
                                                                              
OBJECT                             = TEXT                                     
   PUBLICATION_DATE                = 2007-07-17  /* Label Generated */        
   NOTE                            = "Description of the contents of the      
        document directory."                                                  
END_OBJECT                         = TEXT                                     
END                                                                           
                                                                              
"document" Directory Contents                                                 
                                                                              
The document directory contains documentation files, where available, for the 
data set in this volume.  All document files will have an accompanying label  
file to describe content and structure.  Label files have the same name as the
main document file, with an extension of ".lbl".                              
                                                                              
docinfo.txt -  The file you are reading.                                      
                                                                              
ads.txt -  The file sent to Abstract Data Service (ADS).                      
                                                                              
ads.lbl -  The label for ads.txt.                                             
                                                                              
checksum.tab -  A table of checksums for all the data files.                  
                                                                              
checksum.lbl -  The label for checksum.tab.