Fri, 05 Jan 2001 10:17:48 +0100 paulson more removal of obsolete rules
Fri, 05 Jan 2001 10:17:19 +0100 paulson fixed two proofs that were affected by the removal of obsolete rules
Fri, 05 Jan 2001 10:15:48 +0100 paulson new examples by Sidi Ehmety
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