bug#24520: 25.1.50; calccard.tex has somewhat unclear licensing

[Richard Stallman]

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  > 1) Following from the removal of "This file is part of GNU Emacs.",
  > I suggest s/GNU Emacs/This document/ (or "This reference card") in the
  > rest of the permission notice.

Yes, thanks.

-- 
Dr Richard Stallman
President, Free Software Foundation (gnu.org, fsf.org)
Internet Hall-of-Famer (internethalloffame.org)
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