Wed, 06 Dec 2023 11:08:39 +0100 blanchet don't freeze terms in Sledgehammer, as this has a bad impact on 'using' facts
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 tip