+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.List;
+
+import javax.swing.JCheckBoxMenuItem;
+import javax.swing.JMenu;
+import javax.swing.JMenuItem;
+import javax.swing.event.MenuEvent;
+import javax.swing.event.MenuListener;
+
+import compbio.metadata.Argument;