Wed, 12 Oct 1994 16:34:00 +0100 wenzelm remove _explode, _implode and trfuns;
Wed, 12 Oct 1994 16:32:06 +0100 wenzelm prove_subclass, prove_arity now exported;
Wed, 12 Oct 1994 16:31:01 +0100 wenzelm added is_equals: term -> bool;
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