Mon, 23 May 2016 14:56:48 +0200 tuned document;
wenzelm [Mon, 23 May 2016 14:56:48 +0200] rev 63111
tuned document;
Mon, 23 May 2016 14:43:14 +0200 misc tuning and modernization;
wenzelm [Mon, 23 May 2016 14:43:14 +0200] rev 63110
misc tuning and modernization;
Mon, 23 May 2016 12:48:24 +0200 proper document source;
wenzelm [Mon, 23 May 2016 12:48:24 +0200] rev 63109
proper document source; tuned proofs;
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