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-rw-r--r--modules/system/system.api.php2
1 files changed, 2 insertions, 0 deletions
diff --git a/modules/system/system.api.php b/modules/system/system.api.php
index f85c014a1..202c08732 100644
--- a/modules/system/system.api.php
+++ b/modules/system/system.api.php
@@ -320,6 +320,8 @@ function hook_cron_queue_info() {
* - "#pre_render": array of callback functions taking $element and $form_state.
* - "#post_render": array of callback functions taking $element and $form_state.
* - "#submit": array of callback functions taking $form and $form_state.
+ * - "#title_display": optional string indicating if and how #title should be
+ * displayed, see theme_form_element() and theme_form_element_label().
*
* @see hook_element_info_alter()
* @see system_element_info()