The INDEX directory contains 2 indices for this volume : INDEX.TAB and BROWSE_INDEX.TAB Accompanying each index files is a PDS label (INDEX.LBL and BROWSE_INDEX.LBL). The *.TAB files are ASCII files. Each line (or record) in the .TAB-files contains information about a single data file in the data or browse archive volume. Each line in a *.TAB file is made up of comma-delimited fixed-length fields. Users of the SOIR archive can make use of the BROWSE directory to have a quick look into the available data products. The structure and naming conventions for the BROWSE directory are completely identical to that of the DATA directory.