Mon, 24 May 1999 21:53:18 +0200 wenzelm outer syntax keyword classification;
Mon, 24 May 1999 15:56:24 +0200 paulson renamed Lprg to Lift; simplified proof of Always_nonneg
Mon, 24 May 1999 15:54:58 +0200 paulson int_Suc->int_Suc_int_1 avoiding confusion with the more useful Bin.int_Suc
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