Mon, 13 Oct 1997 17:49:50 +0200 wenzelm fixed extern;
Mon, 13 Oct 1997 17:49:08 +0200 wenzelm uses Sign.str_of_classrel, Sign.str_of_arity, Sign.str_of_arity;
Mon, 13 Oct 1997 17:47:59 +0200 wenzelm uses Sign.str_of_sort;
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