Tue, 31 May 2011 22:15:39 +0200 wenzelm turned "Overview" into "Preface" (similar to doc-src/Intro/intro.tex);
Thu, 26 May 2011 22:42:52 +0200 wenzelm moved/updated basic HOL overview;
Thu, 26 May 2011 21:39:02 +0200 wenzelm updated and re-unified (co)inductive definitions in HOL;
Thu, 26 May 2011 15:56:39 +0200 wenzelm clarified current 'primrec' vs. old 'recdef';
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