Flips is licensed under GNU General Public License, version 3.0 or higher. The full legal text can
  be found in boring.zip; a rough interpretation (for non-lawyers only) follows:

- You must credit the author. Don't claim it as your own. You may modify it and take credit for your
  modifications, but the author (Alcaro) must be credited for the original software.
- If you modify this software, it must clearly be labeled as a modification.
- Any applications containing any part of this software must provide the full source code needed to
  modify and rebuild this application, under the same license. Including this interpretation is
  optional.
- The author claims no copyright over input, output, or error messages generated by this tool. Use
  it however you want.