_paletteRoot = new PaletteRoot();
      final List<PaletteContainer> categories = new ArrayList<PaletteContainer>();
      // a group of default control tools
      final PaletteGroup controls = new PaletteGroup(Messages.MapPalette_Controls);
      // the selection tool
      final ToolEntry tool = new SelectionToolEntry();
      controls.add(tool);
      // use selection tool as default entry
      _paletteRoot.setDefaultEntry(tool);
      // the marquee selection tool
      controls.add(new MarqueeToolEntry());