diff --git a/web/gui/src/main/webapp/index.html b/web/gui/src/main/webapp/index.html
index e4fa6e2..22865a1 100644
--- a/web/gui/src/main/webapp/index.html
+++ b/web/gui/src/main/webapp/index.html
@@ -126,6 +126,13 @@
     <link rel="stylesheet" href="app/fw/widget/table.css">
     <link rel="stylesheet" href="app/fw/widget/table-theme.css">
 
+    <!-- Under development for Region support. -->
+    <script src="app/view/topo2/topo2.js"></script>
+    <script src="app/view/topo2/topo2Event.js"></script>
+    <script src="app/view/topo2/topo2Force.js"></script>
+    <link rel="stylesheet" href="app/view/topo2/topo2.css">
+    <link rel="stylesheet" href="app/view/topo2/topo2-theme.css">
+
     <!-- Builtin views javascript. -->
     <script src="app/view/topo/topo.js"></script>
     <script src="app/view/topo/topoD3.js"></script>