Custom menus are those defined by the administrator. Reserved for internal use; do not return from hook_menu() implementations.
File
- includes/
menu.inc, line 152 - API for the Drupal menu system.
Code
define('MENU_CUSTOM_MENU', MENU_IS_ROOT | MENU_VISIBLE_IN_TREE | MENU_CREATED_BY_ADMIN | MENU_MODIFIABLE_BY_ADMIN)