Switch to side-by-side view

--- a/tool/run/plugins/basic/nodeTools.java
+++ b/tool/run/plugins/basic/nodeTools.java
@@ -49,6 +49,10 @@
      */
     public void addNode(){
         JTree tree = core.studio.getTree();
+        // avoid empty null objects when there is nothing on the tree
+        if(tree.getModel().getRoot()==null){
+            return;
+        }
         TreeNodeSPDX nodeRoot = (TreeNodeSPDX) tree.getModel().getRoot();
         TreeNodeSPDX node = swingUtils.nodeCreate("Tools", NodeType.none, nodeRoot);
         node.setIcon("toolbox.png");