WordPress at a glance
action is not described

admin_head action-hook . WP 2.1.0

Fires in head section for all admin pages.

Usage

add_action( 'admin_head', 'action_function_name_2627' );
function action_function_name_2627(){
	// action...
}

Where the hook is called

In file: /wp-admin/admin-header.php
admin_head
wp-admin/admin-header.php 142
do_action( 'admin_head' );
wp-admin/includes/media.php 512
do_action( 'admin_head' );
wp-admin/includes/template.php 1814
do_action( 'admin_head' );

Where the hook is used (in WP core)

wp-includes/class-wp-admin-bar.php 56
add_action( 'admin_head', 'wp_admin_bar_header' );
wp-includes/general-template.php 4077
add_action( 'admin_head', '_thickbox_path_admin_subfolder' );
wp-admin/network/settings.php 42
add_action( 'admin_head', 'network_settings_add_js' );
wp-admin/options-reading.php 18
add_action('admin_head', 'options_reading_add_js');
wp-admin/includes/admin-filters.php 43
add_action( 'admin_head', 'wp_admin_canonical_url' );
wp-admin/includes/admin-filters.php 44
add_action( 'admin_head', 'wp_color_scheme_settings' );
wp-admin/includes/admin-filters.php 45
add_action( 'admin_head', 'wp_site_icon' );
wp-admin/includes/admin-filters.php 46
add_action( 'admin_head', '_ipad_meta' );
wp-admin/options-general.php 23
add_action('admin_head', 'options_general_add_js');
wp-admin/export.php 43
add_action( 'admin_head', 'export_add_js' );
wp-admin/upload.php 28
remove_action( 'admin_head', 'wp_admin_canonical_url' );
wp-admin/users.php 222
add_action( 'admin_head', 'delete_users_add_js' );