PDS_VERSION_ID        = PDS3                                                  
RECORD_TYPE           = STREAM                                                
OBJECT                = TEXT                                                  
  PUBLICATION_DATE    = 2016-02-19                                            
  NOTE                = "Description of the DOCUMENT directory contents."     
END_OBJECT            = TEXT                                                  
END                                                                           
                                                                              
The DOCUMENT directory contains copies of documents that are necessary or     
useful for users to understand the archive data set. These documents are      
orgainized in the subdirectories listed below.                                
                                                                              
CERES_COORD_SYS                                                               
This document describes updates to the Ceres coordinate system made           
as a result of observation made by the NASA Dawn mission.                     
                                                                              
ENVI_TUTORIAL                                                                 
VIR ENVI Tutorial document. This document describes the procedure to manually 
open Dawn VIR .QUB files using ENVI. Please use the ASCII version of this     
document (DAWNVIR_ENVI_TUTORIAL_V3.ASC) when copying and pasting lines from   
the IDL routine included in this document.                                    
                                                                              
ISIS_TUTORIAL                                                                 
VIR ISIS Tutorial document. The document describes the procedure for reading  
and processing VIR data qubes using ISIS.                                     
                                                                              
SCIENCE_PLAN                                                                  
The Dawn Science Plan document. This document provides a description of the   
Dawn observations. Note that this document includes both as-flown and planned 
observations. Not all of the planned observations actually occurred due to a  
variety of instrument resets and spacecraft safings.                          
                                                                              
SIS                                                                           
The Dawn VIR Software Interface Specification (SIS). This document describes  
the contents and types of archive volumes belonging to all of the VIR NASA    
level 1 (CODMAC levels 2 and 3) data sets. This includes detailed             
descriptions of the data formats to allow users to read the data products.