Index: trunk/src_plugins/sketch_route/cdt/list/list.c
===================================================================
--- trunk/src_plugins/sketch_route/cdt/list/list.c	(revision 18215)
+++ trunk/src_plugins/sketch_route/cdt/list/list.c	(revision 18216)
@@ -79,6 +79,14 @@
 	return NULL;
 }
 
+LST(node_t) *LST(nth)(LST(node_t) *list, int n)
+{
+	int i;
+  for (i = 0; i < n && list != NULL; i++)
+		list = list->next;
+	return list;
+}
+
 size_t LST(length)(LST(node_t) *list)
 {
 	size_t len = 0;
Index: trunk/src_plugins/sketch_route/cdt/list/list.h
===================================================================
--- trunk/src_plugins/sketch_route/cdt/list/list.h	(revision 18215)
+++ trunk/src_plugins/sketch_route/cdt/list/list.h	(revision 18216)
@@ -14,6 +14,7 @@
 LST(node_t) *LST(remove)(LST(node_t) *list, LST(node_t) *node);
 LST(node_t) *LST(remove_item)(LST(node_t) *list, LST_ITEM_T *item);
 LST(node_t) *LST(find)(LST(node_t) *list, LST_ITEM_T *item);
+LST(node_t) *LST(nth)(LST(node_t) *list, int n);
 
 size_t LST(length)(LST(node_t) *list);
 int LST(get_index)(LST(node_t) *list, LST(node_t) *node);