diff -r 22fa8b16c3ae -r 13b32661dde4 doc-src/TutorialI/Misc/fakenat.thy
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc-src/TutorialI/Misc/fakenat.thy	Wed Apr 19 11:56:31 2000 +0200
@@ -0,0 +1,13 @@
+(*<*)
+theory fakenat = Main:;
+(*>*)
+
+text{*\noindent
+The type \isaindexbold{nat} of natural numbers is predefined and
+behaves like
+*}
+
+datatype nat = "0" | Suc nat
+(*<*)
+end
+(*>*)