PDS_VERSION_ID = PDS3                                                         
RECORD_TYPE    = STREAM                                                       
OBJECT         = TEXT                                                         
  PUBLICATION_DATE = 2000-05-15                                               
  NOTE             = "EXTRINFO.TXT describes the files in the EXTRAS          
                      directory of this disk."                                
END_OBJECT     = TEXT                                                         
END                                                                           
                                                                              
The EXTRAS directory contains files which facilitate the use of the           
data on the disk, but which are not actually required for the use or          
understanding of those data. The main files in the EXTRAS directory           
are HTML documents which can be viewed with a Web browser and used to         
navigate the disk via links. These files include:                             
                                                                              
CATALOG.HTM  - an HTML document with links to CATALOG files                   
                                                                              
DOCUMENT.HTM - an HTML document with links to DOCUMENT files                  
                                                                              
HIRESDAT.HTM - an HTML document with links leading to high-resolution         
               data files, and to other files relevant to those data          
                                                                              
LORESDAT.HTM - an HTML document with links leading to low-resolution          
               data files, and to other files relevant to those data          
                                                                              
HIRnnnn.HTM (nnnn a number)  - an HTML document with a table of links         
               to high-resolution data files in the 100-orbit subdirectory    
               /DATA/HIGH_RES/ORBnnnn.  This file is intended to be           
               accessed via links in HIRESDAT.HTM.                            
                                                                              
LOWRnnnn.HTM (nnnn a number) - an HTML document with a table of links         
               to low-resolution data files in the 100-orbit subdirectory     
               /DATA/LOW_RES/ORBnnnn.  This file is intended to be            
               accessed via links in LORESDAT.HTM.                            
                                                                              
These files may be accessed individually or may be reached from links         
in the HTML file AAREADME.HTM, which is in the root directory of the          
disk.