Fri, 26 Jul 2019 09:50:12 +0200 more explicit type proof_serial;
wenzelm [Fri, 26 Jul 2019 09:50:12 +0200] rev 70413
more explicit type proof_serial;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 tip