B zlib-1_2_3, Programming, zlib data compression library for OpenVMS  < From Wikipedia: zlib is an open-source, cross-platform data ; compression library by Jean-loup Gailly and Mark Adler and  < is an abstraction of the DEFLATE compression algorithm used ( in their gzip file compression program.   ; The first public version, 0.9, was released on May 1, 1995  ? and was originally intended for use with libpng image library.    + zlib is distributed under the zlib license.    For further information:  %   <http://en.wikipedia.org/wiki/Zlib>    <http://www.zlib.net/>  