-import java.awt.*;
-import java.awt.event.*;
-import java.util.Hashtable;
-
-import jalview.analysis.*;
-import jalview.datamodel.*;
-import jalview.io.*;
-
-public class TreePanel
- extends EmbmenuFrame implements ActionListener, ItemListener
+import jalview.analysis.NJTree;
+import jalview.api.analysis.ScoreModelI;
+import jalview.api.analysis.ViewBasedAnalysisI;
+import jalview.datamodel.Alignment;
+import jalview.datamodel.AlignmentView;
+import jalview.datamodel.ColumnSelection;
+import jalview.datamodel.SequenceI;
+import jalview.io.NewickFile;
+import jalview.schemes.ResidueProperties;
+import jalview.util.MessageManager;
+
+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