1 files changed, 33 insertions, 1 deletions
diff --git a/modules/system/system.api.php b/modules/system/system.api.php
index 1f4d1d394..d29a16035 100644
--- a/modules/system/system.api.php
+++ b/modules/system/system.api.php
@@ -12,6 +12,38 @@
  */
 
 /**
+ * Defines one or more hooks that are exposed by a module.
+ *
+ * Normally hooks do not need to be explicitly defined. However, by declaring a
+ * hook explicitly, a module may define a "group" for it. Modules that implement
+ * a hook may then place their implementation in either $module.module or in
+ * $module.$group.inc. If the hook is located in $module.$group.inc, then that
+ * file will be automatically loaded when needed.
+ * In general, hooks that are rarely invoked and/or are very large should be
+ * placed in a separate include file, while hooks that are very short or very
+ * frequently called should be left in the main module file so that they are
+ * always available.
+ *
+ * @return
+ *   An associative array whose keys are hook names and whose values are an
+ *   associative array containing:
+ *   - group: A string defining the group to which the hook belongs. The module
+ *     system will determine whether a file with the name $module.$group.inc
+ *     exists, and automatically load it when required.
+ *
+ * See system_hook_info() for all hook groups defined by Drupal core.
+ */
+function hook_hook_info() {
+  $hooks['token_info'] = array(
+    'group' => 'tokens',
+  );
+  $hooks['tokens'] = array(
+    'group' => 'tokens',
+  );
+  return $hooks;
+}
+
+/**
  * Inform the base system and the Field API about one or more entity types.
  *
  * Inform the system about one or more entity types (i.e., object types that
@@ -700,7 +732,7 @@ function hook_image_toolkits() {
  *
  * Email messages sent using functions other than drupal_mail() will not
  * invoke hook_mail_alter(). For example, a contributed module directly
- * calling the drupal_mail_sending_system()->mail() or PHP mail() function
+ * calling the drupal_mail_system()->mail() or PHP mail() function
  * will not invoke this hook. All core modules use drupal_mail() for
  * messaging, it is best practice but not manditory in contributed modules.
  *