+import jalview.api.FeatureColourI;
+import jalview.datamodel.AlignmentAnnotation;
+import jalview.datamodel.SequenceI;
+import jalview.io.AnnotationFile;
+import jalview.io.FeaturesFile;
+import jalview.io.JalviewFileChooser;
+import jalview.io.JalviewFileView;
+import jalview.util.MessageManager;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.FlowLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.Map;
+
+import javax.swing.BorderFactory;
+import javax.swing.ButtonGroup;
+import javax.swing.JButton;
+import javax.swing.JInternalFrame;
+import javax.swing.JLabel;
+import javax.swing.JLayeredPane;
+import javax.swing.JPanel;
+import javax.swing.JRadioButton;
+import javax.swing.SwingConstants;