Thu, 03 Apr 2014 21:55:48 +0200 wenzelm more direct warning within persistent Protocol.Status;
Thu, 03 Apr 2014 21:08:00 +0200 wenzelm clarified Version.syntax -- avoid guessing initial situation;
Thu, 03 Apr 2014 20:53:35 +0200 wenzelm more abstract Prover.Syntax, as proposed by Carst Tankink;
Thu, 03 Apr 2014 20:17:12 +0200 wenzelm tuned signature (see also 0850d43cb355);
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