PDS_VERSION_ID     = PDS3                                                     
RECORD_TYPE        = STREAM                                                   
OBJECT             = TEXT                                                     
  PUBLICATION_DATE = 2017-08-21                                               
  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.                                                                
                                                                              
This directory contains a full sized TIFF version of the DTM file in          
the DATA area. This image may be useful to users of ArcGIS or other software  
packages. However, the data in the TIFF file are stored in a 16-bit signed    
format that is not supported by all TIFF viewers. If the viewing software does
not support this format, the image will appear to be saturated.