+import jalview.api.AlignViewportI;
+import jalview.api.AlignmentViewPanel;
+import jalview.api.ComplexAlignFile;
+import jalview.api.FeatureSettingsModelI;
+import jalview.api.FeaturesDisplayedI;
+import jalview.api.FeaturesSourceI;
+import jalview.bin.Jalview;
+import jalview.datamodel.AlignmentI;
+import jalview.datamodel.ColumnSelection;
+import jalview.datamodel.SequenceI;
+import jalview.io.AppletFormatAdapter;
+import jalview.io.FileParse;
+import jalview.io.FormatAdapter;
+import jalview.io.IdentifyFile;
+import jalview.io.JalviewFileChooser;
+import jalview.io.JalviewFileView;
+import jalview.jbgui.GCutAndPasteTransfer;
+import jalview.json.binding.biojson.v1.ColourSchemeMapper;
+import jalview.schemes.ColourSchemeI;
+import jalview.util.MessageManager;
+
+import java.awt.Toolkit;
+import java.awt.datatransfer.Clipboard;
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.StringSelection;
+import java.awt.datatransfer.Transferable;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.MouseEvent;