-import jalview.analysis.AlignSeq;
-import jalview.datamodel.AlignmentAnnotation;
-import jalview.datamodel.ColumnSelection;
-import jalview.datamodel.HiddenColumns;
-import jalview.datamodel.RnaViewerModel;
-import jalview.datamodel.SequenceGroup;
-import jalview.datamodel.SequenceI;
-import jalview.ext.varna.RnaModel;
-import jalview.structure.SecondaryStructureListener;
-import jalview.structure.SelectionListener;
-import jalview.structure.SelectionSource;
-import jalview.structure.StructureSelectionManager;
-import jalview.structure.VamsasSource;
-import jalview.util.Comparison;
-import jalview.util.MessageManager;
-import jalview.util.ShiftList;
-