Derived from Unfinished user interfaces
by Buch (https://opengameart.org/users/buch)
https://opengameart.org/content/unfinished-user-interfaces
http://creativecommons.org/publicdomain/zero/1.0/

And Hard Vacuum: IntfcBuy
By Daniel Cook (http://lostgarden.com/)
https://opengameart.org/content/hard-vacuum-intfcbuy
http://creativecommons.org/licenses/by/3.0/