Thu, 30 Aug 2007 15:04:44 +0200 wenzelm infer_types: general check_typs instead of Type.cert_typ_mode;
Thu, 30 Aug 2007 15:04:42 +0200 wenzelm maintain mode in context (get/set/restore_mode);
Thu, 30 Aug 2007 15:04:41 +0200 wenzelm added burrow_types;
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