src/Pure/General/ROOT.ML

--- a/src/Pure/General/ROOT.ML	Tue Jun 19 23:15:38 2007 +0200
+++ b/src/Pure/General/ROOT.ML	Tue Jun 19 23:15:43 2007 +0200
@@ -8,6 +8,7 @@
 use "ord_list.ML";
 use "alist.ML";
 use "table.ML";
+use "balanced_tree.ML";
 use "output.ML";
 use "graph.ML";
 use "heap.ML";