diff --git a/core/modules/system/system.api.php b/core/modules/system/system.api.php
index 57a2e24..6a3b30d 100644
--- a/core/modules/system/system.api.php
+++ b/core/modules/system/system.api.php
@@ -64,6 +64,8 @@ function hook_hook_info() {
  * instead of executing the tasks directly. To do this, first define one or
  * more queues via hook_queue_info(). Then, add items that need to be
  * processed to the defined queues.
+ *
+ * @see queue
  */
 function hook_cron() {
   // Short-running operation example, not using a queue:
@@ -125,6 +127,8 @@ function hook_data_type_info_alter(&$data_types) {
  *
  * @see hook_cron()
  * @see hook_queue_info_alter()
+ *
+ * @ingroup queue
  */
 function hook_queue_info() {
   $queues['aggregator_feeds'] = array(
@@ -149,6 +153,8 @@ function hook_queue_info() {
  *
  * @see hook_queue_info()
  * @see \Drupal\Core\Cron
+ *
+ * @ingroup queue
  */
 function hook_queue_info_alter(&$queues) {
   // This site has many feeds so let's spend 90 seconds on each cron run
@@ -178,6 +184,8 @@ function hook_queue_info_alter(&$queues) {
  *   from the current item's queue during the current cron run.
  *
  * @see \Drupal\Core\Cron::run()
+ *
+ * @ingroup queue
  */
 function callback_queue_worker($queue_item_data) {
   $node = node_load($queue_item_data);