GNU License for Hardware

[Richard Stallman]

If you are inspired by the GNU Project and the Free Software movement,
I hope you will choose a name that refers to freedom.  The word "open"
calls to mind the Open Source movement, which differs from the Free
Software movement in rejecting all talk of freedom, principle and
other non-material benefits.

See http://www.gnu.org/philosophy/free-software-for-freedom.html.