diff --git a/ccm-cms/src/com/arsdigita/cms/ContentItemXMLRenderer.java b/ccm-cms/src/com/arsdigita/cms/ContentItemXMLRenderer.java
index ba378cd4e..2f8c470df 100644
--- a/ccm-cms/src/com/arsdigita/cms/ContentItemXMLRenderer.java
+++ b/ccm-cms/src/com/arsdigita/cms/ContentItemXMLRenderer.java
@@ -11,6 +11,14 @@ import com.arsdigita.domain.DomainObjectXMLRenderer;
 import com.arsdigita.xml.Element;
 
 /**
+ * This is a special ContentItemXMLRenderer for CMS to get a more transparent
+ * way to handle ContentBundles during XML output.
+ *
+ *  The problem was to change RelatedLinks and therefore Link to always link to
+ *  the corresponding ContentBundle instead of the content item. To get the
+ *  corresponding content item during XML generation, I have to test for
+ *  ContentBundle and negotiate the language version.
+ *  This is not possible in com.arsdigita.ccm
  *
  * @author quasi
  */
@@ -21,6 +29,11 @@ public class ContentItemXMLRenderer extends DomainObjectXMLRenderer {
         super(root);
     }
 
+
+    // This method will be called by DomainObjectTraversal.walk()
+    // It's purpose is to test for ContentBundle objects and if found, replace
+    // that object with the negotiated version of the content item.
+    // Otherwise this methd will do nothing.
     protected void walk(final DomainObjectTraversalAdapter adapter,
             final DomainObject obj,
             final String path,