Sun, 02 Sep 2018 14:56:26 +0200 wenzelm more robust reset_state: begin/end structure takes precedence over goal/proof structure;
Sun, 02 Sep 2018 14:14:43 +0200 wenzelm no reset_proof for notepad: begin/end structure takes precedence over goal/proof structure;
Sun, 02 Sep 2018 13:53:55 +0200 wenzelm clarified signature;
Sun, 02 Sep 2018 13:21:15 +0200 wenzelm tuned;
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