PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2013-07-20 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 volume contains full sized TIFF versions of the mosaics. These may be useful to users of ArcGIS or other software packages. The data are organized and named following the same conventions used in the DATA directory.