Fri, 16 Apr 2010 22:45:07 +0200 replaced old Sign.add_tyabbrs(_i) by Sign.add_type_abbrev (without mixfix);
wenzelm [Fri, 16 Apr 2010 22:45:07 +0200] rev 36179
replaced old Sign.add_tyabbrs(_i) by Sign.add_type_abbrev (without mixfix); misc tuning and simplification;
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