GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007

Copyright (C) [Year] [Your Name]
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.

Preamble

The GNU General Public License is a free, copyleft license for
software and other kinds of works.

[... full GPL-3.0 text continues ...]

You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.