diff --git a/index.html b/index.html
index 6ebb739..541ba45 100755
--- a/index.html
+++ b/index.html
@@ -172,14 +172,14 @@ var N =
 var Pivot = 
 {
     Leaves:{},
-    Root:N.Create({}),
+    Root:N.Create({Label:"All Pivots"}),
 
     Init(inRows)
     {
         Pivot.Leaves = inRows.map(r => N.Create({Row:r}));
         Pivot.Init = ()=>{};
     },
-    Pivot(inParent, inPivotIndicies, inSumIndicies, inDepth)
+    Pivot(inRoot, inParent, inPivotIndicies, inSumIndicies, inDepth)
     {
         //arguments:
         //    - a Node with leaf Nodes temporarily stored in its Meta.Leaves
@@ -226,6 +226,7 @@ var Pivot =
         {
             iterator = inLastBranch =>
             {
+                N.Connect(inRoot, inLastBranch, "Terminal");
                 inLastBranch.Meta.Leaves.forEach( inLeaf =>
                 {
                     // collect modifiers effecting leaves
@@ -247,7 +248,7 @@ var Pivot =
                         inLastBranch.ID.Walk = N.ID.Walk;
                         modifiers.forEach( inModifier => N.Connect(inModifier, inLastBranch, "ModifyUp") )
 
-                        // also walk them up, but with a unique check connection
+                        // also walk them up and connect, but with "check unique" enabled
                         N.Walk( inNode=>
                         {
                             modifiers.forEach( inModifier => N.Connect(inModifier, inNode, "ModifyUp", true) )
@@ -263,7 +264,7 @@ var Pivot =
         }
         else
         {
-            iterator = child => Pivot.Pivot(child, inPivotIndicies, inSumIndicies, depth+1);
+            iterator = child => Pivot.Pivot(inRoot, child, inPivotIndicies, inSumIndicies, depth+1);
         }
         N.Step(inParent, "Hierarchy").forEach(iterator);
         return inParent;
@@ -274,10 +275,11 @@ var Pivot =
         
         let pivotRoot = N.Create({Label:"Pivot Root", Leaves:Pivot.Leaves});
         N.Connect(Pivot.Root, pivotRoot, "Pivot");
-        return Pivot.Pivot(pivotRoot, inPivotIndicies, inSumIndicies);
+        return Pivot.Pivot(pivotRoot, pivotRoot, inPivotIndicies, inSumIndicies);
     },
     Delete(inRoot)
     {
+        // disconnect modifiers
         let check = N.Step(inRoot, "Modifier");
         if(check)
         {
@@ -286,6 +288,14 @@ var Pivot =
                 Pivot.Unmodify(check[0]);
             }
         }
+
+        // disconnect terminal branches
+        N.Walk(()=>{}, inRoot, "Terminal", inNode=>{
+            N.Disconnect(inNode, null, "Hierarchy");
+        });
+
+        // disconnect from app
+        N.Disconnect(null, inRoot, "Pivot")
     },
     Modify(inNode)
     {
@@ -461,6 +471,7 @@ let ElModifiers = ({node}) =>
 };
 let ElRoot = props =>
 {
+    let pivots = N.Step(Pivot.Root, "Pivot")||[];
     return h("div", null, [
         h("h3", null, "tree view"),
         h(ElModifiers, {node:Pivot.Root}),
@@ -469,7 +480,7 @@ let ElRoot = props =>
             AddNewPivot();
         }
         }, "add new pivot"),
-        ...N.Step(Pivot.Root, "Pivot").map(pivot=>h(ElPivot, {pivot}))
+        pivots.map(pivot=>h(ElPivot, {pivot}))
     ])
 };
 let Render = () => render(h(ElRoot), document.querySelector("#app"));