Mon, 26 Sep 1994 17:56:21 +0100 improved expand_typ (now handles TVars);
wenzelm [Mon, 26 Sep 1994 17:56:21 +0100] rev 621
improved expand_typ (now handles TVars); slightly changed ext_tsig_abbrs; added ext_tsig_arities; removed extend_tsig; various internal changes;
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