Fri, 20 Feb 2009 21:00:28 +0100 wenzelm improved section "Rule composition";
Fri, 20 Feb 2009 19:07:31 +0100 wenzelm tuned;
Fri, 20 Feb 2009 18:48:58 +0100 wenzelm improved section on "Hereditary Harrop Formulae";
Thu, 19 Feb 2009 21:19:49 +0100 wenzelm more on object-level rules;
Wed, 18 Feb 2009 22:44:59 +0100 wenzelm updated generated files;
Wed, 18 Feb 2009 22:44:52 +0100 wenzelm tuned;
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