Tue, 24 Sep 1996 08:59:24 +0200 nipkow Moved Option into core HOL which caused a few local changes.
Mon, 23 Sep 1996 18:26:51 +0200 paulson Proofs made more robust to work in presence of le_refl
Mon, 23 Sep 1996 18:26:12 +0200 paulson Now uses init_html
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