PDS_VERSION_ID        = PDS3                                                  
RECORD_TYPE           = STREAM                                                
OBJECT                = TEXT                                                  
  PUBLICATION_DATE    = 2011-10-01                                            
  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.                                
                                                                              
                                                                              
ACTIVITY_REPORTS                                                              
This directory contains reports describing instrument operations and results  
of the various instrument activities and observations. Each report is located 
in a subdirectory whose name is identical to that used in the DATA directory  
for the corresponding data.                                                   
                                                                              
                                                                              
DATA_PROCESSING                                                               
PDS Data Processing document. This document describes data processing for the 
reduction of gamma ray and neutron spectroscopy data acquired by the NASA Dawn
mission's Gamma Ray and Neutron Detector (GRaND).                             
                                                                              
                                                                              
SIS                                                                           
The Dawn Gamma Ray and Neutron Detector Software Interface Specification      
(SIS). This document describes the contents and types of archive volumes      
belonging to all of the GRaND 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.