HorizontalPanel helpPanel = new HorizontalPanel();
Image helpImage = new Image(ThemeResources.INSTANCE.help());
helpImage.getElement().getStyle().setMarginRight(4, Unit.PX);
helpPanel.add(helpImage);
helpLink_ = new HyperlinkLabel(caption);
helpLink_.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event)
{
RStudioGinjector.INSTANCE.getGlobalDisplay().openRStudioLink(
rstudioLink_,