doc-src/TutorialI/Misc/natsum.thy
changeset 16417 9bc16273c2d4
parent 15364 0c3891c3528f
child 16523 f8a734dc0fbc
--- a/doc-src/TutorialI/Misc/natsum.thy	Fri Jun 17 11:35:35 2005 +0200
+++ b/doc-src/TutorialI/Misc/natsum.thy	Fri Jun 17 16:12:49 2005 +0200
@@ -1,5 +1,5 @@
 (*<*)
-theory natsum = Main:;
+theory natsum imports Main begin;
 (*>*)
 text{*\noindent
 In particular, there are @{text"case"}-expressions, for example