许可证
From LimeSurvey Manual
这个软件是免费软件。
你可以对这个软件重新进行分发或者进行修改,但是所有的操作请遵守 GNU General Public License Version 2 许可协议。
这个协议是免费软件基金会(Free Software Foundation)发布的。
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details: http://www.gnu.org/licenses/gpl.html