code: function setRefsLabel () {
    var values = getCheckedAndUnchecked(form.refs.external, form.refs.circular);
  
    switch (values.checked.length) {
      case 0:
        form.refs.label.text("Only follow internal $refs");
        break;
      case 1:
        form.refs.label.text("Don't follow " + values.unchecked[0] + " $refs");
        break;
      case 2:
        form.refs.label.text("Follow all $refs");
    }
  }
docs: Sets the "refs" label, based on which options are selected