Thu, 06 Feb 1997 17:46:22 +0100 wenzelm adapted read_typ, simple_read_typ;
Thu, 06 Feb 1997 17:44:14 +0100 wenzelm improved comments;
Thu, 06 Feb 1997 17:25:17 +0100 wenzelm added string_of_vname' (treats neg. index as free);
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