WordPress at a glance
function is not described

screen_icon() WP 2.7.0

Deprecated in 3.8.0. It is no longer supported and can be removed in future releases. It is recommended to replace this function with the same one.

Displays a screen icon.

No Hooks.

Return

Nothing (null).

Usage

screen_icon();

Code of screen icon: wp-admin/includes/deprecated.php VER 5.1.1

<?php
function screen_icon() {
	_deprecated_function( __FUNCTION__, '3.8.0' );
	echo get_screen_icon();
}