diff -r 47d5f1fe0b03 -r 40cabcdcd2be samples/visitor/11-cleanversion/src-api1.0/org/apidesign/visitor/Language.java
--- a/samples/visitor/11-cleanversion/src-api1.0/org/apidesign/visitor/Language.java	Sat Jun 14 22:59:00 2008 +0200
+++ b/samples/visitor/11-cleanversion/src-api1.0/org/apidesign/visitor/Language.java	Thu Oct 30 21:30:10 2014 +0100
@@ -1,5 +1,7 @@
 package org.apidesign.visitor;
 
+
+// BEGIN: visitor.cleandefinitionofversion
 public final class Language {
     private Language() { }
     
@@ -49,3 +51,4 @@
         public void visitNumber(Number n);
     }
 }
+// END: visitor.cleandefinitionofversion