code: private void addSingleColumnSelectExample() {
  		add(new WHeading(HeadingLevel.H3, "WRadioButtonSelect laid out in a single column"));
  		add(new ExplanatoryText("When layout is COLUMN, setting the layoutColumnCount property to one, or forgetting to set it at all (default is "
  				+ "one) is a little bit pointless."));
  		final WRadioButtonSelect select = new WRadioButtonSelect("australian_state");
  		select.setButtonLayout(WRadioButtonSelect.LAYOUT_COLUMNS);
  		add(new WLabel("One column", select));
  		add(select);
  	}
docs: adds a WRadioButtonSelect with LAYOUT_COLUMN in 1 column simply by not setting the number of columns. This is
  superfluous as you should use LAYOUT_STACKED (the default) instead.