+import java.util.Locale;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.BitSet;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Hashtable;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.SortedMap;
+import java.util.TreeMap;
+import java.util.Vector;
+
+import javax.swing.ButtonGroup;
+import javax.swing.JCheckBoxMenuItem;
+import javax.swing.JInternalFrame;
+import javax.swing.JLabel;
+import javax.swing.JMenu;
+import javax.swing.JMenuItem;
+import javax.swing.JPanel;
+import javax.swing.JPopupMenu;
+import javax.swing.JRadioButtonMenuItem;
+import javax.swing.JScrollPane;
+
+import jalview.analysis.AAFrequency;
+import jalview.analysis.AlignmentAnnotationUtils;
+import jalview.analysis.AlignmentUtils;
+import jalview.analysis.Conservation;
+import jalview.api.AlignViewportI;
+import jalview.bin.Console;
+import jalview.commands.ChangeCaseCommand;
+import jalview.commands.EditCommand;
+import jalview.commands.EditCommand.Action;
+import jalview.datamodel.AlignmentAnnotation;
+import jalview.datamodel.AlignmentI;
+import jalview.datamodel.DBRefEntry;
+import jalview.datamodel.HiddenColumns;
+import jalview.datamodel.MappedFeatures;
+import jalview.datamodel.PDBEntry;
+import jalview.datamodel.SequenceFeature;
+import jalview.datamodel.SequenceGroup;
+import jalview.datamodel.SequenceI;
+import jalview.gui.ColourMenuHelper.ColourChangeListener;
+import jalview.gui.JalviewColourChooser.ColourChooserListener;
+import jalview.io.FileFormatI;
+import jalview.io.FileFormats;
+import jalview.io.FormatAdapter;
+import jalview.io.SequenceAnnotationReport;
+import jalview.schemes.Blosum62ColourScheme;
+import jalview.schemes.ColourSchemeI;
+import jalview.schemes.ColourSchemes;
+import jalview.schemes.PIDColourScheme;
+import jalview.schemes.ResidueColourScheme;
+import jalview.util.Comparison;
+import jalview.util.GroupUrlLink;
+import jalview.util.GroupUrlLink.UrlStringTooLongException;
+import jalview.util.MessageManager;
+import jalview.util.Platform;
+import jalview.util.StringUtils;