Fri, 05 Jun 1998 14:32:23 +0200 wenzelm added print_theorems: theory -> unit;
Fri, 05 Jun 1998 14:29:54 +0200 wenzelm Object.T;
Fri, 05 Jun 1998 14:29:33 +0200 wenzelm improved data: secure version using Object.T and Object.kind;
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