KMARK-1, nerve agent antidote kit in Korean army Follow GNU General Public License (http://www.gnu.org/licenses/fdl-1.3.html) 1. You can use a computer program for any purpose. However, the act of restricting it by law cannot be done. 2. Any executable copy of a computer program should always be sold with the source code of the program or distributed free of charge. 3. You can change the source code of a computer program according to its purpose. 4. The changed computer program must also publicly distribute the source code of the program. 5. Changed computer programs must have the same license. That is, the GPL licence should be applied.