/* begin *

   xz 5.2.7 (compression utility based on the LZMA algorithm)

   LZMA is a general purpose compression algorithm designed by Igor
   Pavlov as part of 7-Zip.  It provides high compression ratio while
   keeping the decompression speed fast.  XZ Utils are an attempt to
   make LZMA compression easy to use on free (as in freedom) operating
   systems.

   The people most responsible for xz are Igor Pavlov, Ville Koskinen,
   and Lasse Collin.  For more info:  http://tukaani.org/xz/

 * end */