Index: trunk/quest-core-tasktrees/src/main/java/de/ugoe/cs/quest/tasktrees/treeifc/TaskTree.java
===================================================================
--- trunk/quest-core-tasktrees/src/main/java/de/ugoe/cs/quest/tasktrees/treeifc/TaskTree.java	(revision 465)
+++ trunk/quest-core-tasktrees/src/main/java/de/ugoe/cs/quest/tasktrees/treeifc/TaskTree.java	(revision 466)
@@ -18,5 +18,5 @@
  */
 //-------------------------------------------------------------------------------------------------
-public interface TaskTree
+public interface TaskTree extends Cloneable
 {
 
@@ -39,3 +39,9 @@
   public Map<TaskTreeNode, NodeInfo> getTaskMap();
 
+  //-----------------------------------------------------------------------------------------------
+  /**
+   *
+   */
+  //-----------------------------------------------------------------------------------------------
+  public TaskTree clone();
 }