doc/Contents

--- a/doc/Contents	Tue Oct 10 13:50:33 2006 +0200
+++ b/doc/Contents	Tue Oct 10 13:59:12 2006 +0200
@@ -2,6 +2,8 @@
   tutorial        Tutorial on Isabelle/HOL
   isar-overview   Tutorial on Isar
   locales         Tutorial on Locales
+  classes         Tutorial on Haskell-style type classes
+  codegen         Tutorial on code generation
   axclass         Tutorial on Axiomatic Type Classes
   sugar           LaTeX sugar for proof documents
   ind-defs        (Co)Inductive Definitions in ZF