Tue, 23 Feb 2010 10:11:16 +0100 haftmann dropped axclass, going back to purely syntactic type classes
Tue, 23 Feb 2010 10:11:15 +0100 haftmann dropped axclass; dropped Id
Tue, 23 Feb 2010 10:11:15 +0100 haftmann dropped axclass; dropped Id; session theory Hoare.thy
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