WordPress at a glance
action is not described

(page_hook) action-hook . WP 1.5.0

Used to call the registered callback for a plugin screen.

Usage

add_action( '(page_hook)', 'action_function_name_5295' );
function action_function_name_5295(){
	// action...
}

Where the hook is called

In file: /wp-admin/admin.php
(page_hook)
wp-admin/admin.php 224
do_action( $page_hook );

Where the hook is used (in WP core)

Does not used.