PDS_VERSION_ID     = PDS3                                                     
RECORD_TYPE        = STREAM                                                   
OBJECT             = TEXT                                                     
  PUBLICATION_DATE = 2017-06-01                                               
  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.                                                                
                                                                              
GRaND_Acronyms_130711.pdf                                                     
                   List of definitions of GRaND acronyms (Adobe PDF/A format).
                                                                              
SHAPE_MODEL        Shape model data from the Dawn Ceres shape model. These    
                   decimated shape models used in the calculation of solid    
                   angles for the EPG file. Binary stereolithography (STL),   
                   and ASCII versions are provided.                           
                                                                              
SOFTWARE           IDL Software provided by the GRaND team for reading the    
                   GRaND L1A data. Included in this directory is a            
                   presentation (Extras_Guide_130711.pdf, Adobe PDF/A format) 
                   providing a tutorial on using the IDL routines provided.