anchor.diff:    void createActions() {
       _actionManager = new ActionManager();
   
  -    actionManager.registerAction(new NextAnnotationAction(this));
  -    actionManager.registerAction(new PrevAnnotationAction(this));
  +    actionManager.registerAction(new NextMarkerAction(this));
  +    actionManager.registerAction(new PrevMarkerAction(this));
       actionManager.registerAction(new FileOpenInTabAction(this));
       actionManager.registerAction(new FileNewAsAction(this));
       actionManager.registerAction(new FileOpenAction(this));
  
positive.code:   }
  }
  
  class PrevAnnotationAction extends SparkAction {
    PrevAnnotationAction(Spark spark) : super(
        spark, "annotation-prev", "Previous Annotation") {
      macBinding("ctrl-shift-p");
      winBinding("ctrl-shift-p");
    }
  
    void _invoke([Object context]) {
  
negative.code:   }
  }
  
  class NextMarkerAction extends SparkAction {
    NextMarkerAction(Spark spark) : super(
        spark, "marker-next", "Next Marker") {
      defaultBinding("ctrl-p");
    }
  
    void _invoke([Object context]) {
  