code: private void addInteractiveExamples() {
  		add(new WHeading(HeadingLevel.H2, "Simple WCheckBoxSelect examples"));
  		addExampleUsingLookupTable();
  		addExampleUsingArrayList();
  		addExampleUsingStringArray();
  		addInsideAFieldLayoutExamples();
  		add(new WHeading(HeadingLevel.H2, "Examples showing LAYOUT properties"));
  		addFlatSelectExample();
  		addColumnSelectExample();
  		addSingleColumnSelectExample();
  		add(new WHeading(HeadingLevel.H2, "WCheckBoxSelect showing the frameless state"));
  		add(new WHeading(HeadingLevel.H3, "Normal (with frame)"));
  		WCheckBoxSelect select = new WCheckBoxSelect("australian_state");
  		add(select);
  		select.setToolTip("Make a selection");
  		add(new WHeading(HeadingLevel.H3, "Without frame"));
  		select = new WCheckBoxSelect("australian_state");
  		add(select);
  		select.setFrameless(true);
  		select.setToolTip("Make a selection (no frame)");
  	}
docs: Simple interactive-state WCheckBoxSelect examples.