Wed, 14 Nov 2001 23:21:05 +0100 wenzelm removed BT, Data, Enum (see ZF/Induct);
Wed, 14 Nov 2001 23:20:41 +0100 wenzelm case_names;
Wed, 14 Nov 2001 23:20:14 +0100 wenzelm added Datatypes, Binary_Trees (from ZF/ex);
Wed, 14 Nov 2001 23:19:09 +0100 wenzelm Isar attribute and method setup;
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