Tue, 23 Dec 1997 11:50:36 +0100 paulson Tidied. Also better proof using new blast_tac
Tue, 23 Dec 1997 11:49:46 +0100 paulson Decremented subscript because of change to iffD1
Tue, 23 Dec 1997 11:47:13 +0100 paulson Tidied using rev_iffD1, etc
Tue, 23 Dec 1997 11:46:03 +0100 paulson Tidied using rev_iffD1
Tue, 23 Dec 1997 11:43:48 +0100 paulson Tidied using more default rules
Tue, 23 Dec 1997 11:41:12 +0100 paulson Overloading info for image
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