Wed, 11 Aug 2010 17:50:29 +0200 wenzelm simplified/unified command setup;
Wed, 11 Aug 2010 17:37:04 +0200 wenzelm removed obsolete Proof.get_thmss_cmd (cf. Attrib.eval_thms);
Wed, 11 Aug 2010 17:31:56 +0200 wenzelm prefer plain Attrib.eval_thmss -- also means the assert_forward of Proof.get_thmss_cmd is skipped, leading to uniform (albeit odd) behaviour concerning forward chaining;
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