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@@ -1,3 +1,14 @@
+# Copyright (C) 2013-2021 Yuchen Pei.
+
+# Permission is granted to copy, distribute and/or modify this
+# document under the terms of the GNU Free Documentation License,
+# Version 1.3 or any later version published by the Free Software
+# Foundation; with no Invariant Sections, no Front-Cover Texts, and
+# no Back-Cover Texts. You should have received a copy of the GNU
+# Free Documentation License. If not, see <https://www.gnu.org/licenses/>.
+
+# This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
+
#+title: jst
#+date: <2015-04-02>