Fri, 17 Jun 2005 18:33:08 +0200 wenzelm accomodate identification of type Sign.sg and theory;
Fri, 17 Jun 2005 18:33:05 +0200 wenzelm accomodate change of TheoryDataFun;
Fri, 17 Jun 2005 18:33:03 +0200 wenzelm renamed sg_ref to thy_ref;
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