Sat, 11 Mar 2006 16:53:27 +0100 wenzelm *** empty log message ***
Sat, 11 Mar 2006 16:53:23 +0100 wenzelm added read_class, read/cert_classrel/arity (from axclass.ML);
Sat, 11 Mar 2006 16:53:20 +0100 wenzelm moved read_class, read/cert_classrel/arity to sign.ML;
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