constant MENU_CALLBACK

Menu type -- A hidden, internal callback, typically used for API calls.

Callbacks register a path so that the correct function is fired when the URL is accessed. They do not appear in menus or breadcrumbs.

Menu item types Definitions for various menu item types. Menu system Define the navigation menus, and route page requests to code based on URLs.

49 uses of MENU_CALLBACK

admin_bar_menu in core/modules/admin_bar/admin_bar.module: Implements hook_menu().
admin_bar_translate in core/modules/admin_bar/admin_bar.inc: Translate an expanded router item into a menu link suitable for rendering.
ajax_example_menu in modules/examples/ajax_example/ajax_example.module: Implements hook_menu().
ajax_test_menu in core/modules/simpletest/tests/ajax_test.module: Implements hook_menu().
batch_test_menu in core/modules/simpletest/tests/batch_test.module: Implement hook_menu().

define('MENU_CALLBACK', 0x0000)