PDS_VERSION_ID = PDS3                                                         
RECORD_TYPE    = STREAM                                                       
OBJECT         = TEXT                                                         
  PUBLICATION_DATE = 2002-07-03                                               
  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:                             
                                                                              
                                                                              
BROWSE.HTM   - an HTML document with links to browse plots                    
                                                                              
CATALOG.HTM  - an HTML document with links to CATALOG files                   
                                                                              
DOCUMENT.HTM - an HTML document with links to DOCUMENT files                  
                                                                              
GEOMETRY.HTM - an HTML document with links to GEOMETRY files                  
                                                                              
MAGDATA.HTM  - an HTML document with links to Magnetometer (MAG) data         
               files, and to other files relevant to those data               
                                                                              
ERDATA.HTM   - an HTML document with links to Electron Reflectometer          
               (ER) data files, and to other files relevant to those          
               data                                                           
                                                                              
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.                                                                         
                                                                              
Some disks in this series also have files named BACKLINR.AI and               
FACEPLTE.AI in their EXTRAS directories.  These files are used by             
the PDS and are of no use to other users of the disk.