+import java.awt.BorderLayout;
+import java.awt.CheckboxMenuItem;
+import java.awt.Color;
+import java.awt.Menu;
+import java.awt.MenuBar;
+import java.awt.MenuItem;
+import java.awt.ScrollPane;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.ItemEvent;
+import java.awt.event.ItemListener;
+
+public class TreePanel extends EmbmenuFrame
+ implements ActionListener, ItemListener, AutoCloseable