WordPress at a glance
action is not described

admin_print_scripts action-hook . WP 2.1.0

Fires when scripts are printed for all admin pages.

Usage

add_action( 'admin_print_scripts', 'action_function_name_8387' );
function action_function_name_8387(){
	// action...
}

Where the hook is called

In file: /wp-admin/admin-header.php
admin_print_scripts
wp-admin/admin-header.php 125
do_action( 'admin_print_scripts' );
wp-admin/includes/media.php 501
do_action( 'admin_print_scripts' );
wp-includes/class-wp-customize-widgets.php 649
do_action( 'admin_print_scripts' );
wp-admin/includes/template.php 1808
do_action( 'admin_print_scripts' );

Where the hook is used (in WP core)

wp-includes/default-filters.php 329
add_action( 'admin_print_scripts', 'print_emoji_detection_script' );
wp-includes/default-filters.php 330
add_action( 'admin_print_scripts', 'print_head_scripts', 20 );
wp-admin/edit-form-blocks.php 37
remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );