diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index 3453b2a..8b6f913 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -3579,3 +3579,18 @@ function lock() {
 /**
  * @} End of "defgroup lock".
  */
+
+/**
+ * @defgroup ux
+ * @{
+ * Elements to improve Durpal UX.
+ */
+
+/**
+ * Clairify the difference between files and directories for CMI UX.
+ */
+drupal_set_message(t('They all just inodes, man!'), 'error');
+
+/**
+ * @} End of @defgroup ux".
+ */