82 E x h i b i t AGNU GENERAL PUBLIC LICENSE Version 2, June 1991Copyright ' 1989, 1991 Free Software Foundation,Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USAEveryone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.PreambleThe licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and ch...