diff --git a/framework/yii/bootstrap/ButtonGroup.php b/framework/yii/bootstrap/ButtonGroup.php
index 9b98cc8..fa903a1 100644
--- a/framework/yii/bootstrap/ButtonGroup.php
+++ b/framework/yii/bootstrap/ButtonGroup.php
@@ -51,6 +51,8 @@ class ButtonGroup extends Widget
 	 *
 	 * - label: string, required, the button label.
 	 * - options: array, optional, the HTML attributes of the button.
+	 *
+	 * Optionally, you can also set each item as a string, or even the [[items]] attribute.
 	 */
 	public $items = array();
 	/**