wp_widgets_add_menu()

Source

File: wp-includes/functions.php

function wp_widgets_add_menu() {
	global $submenu;

	if ( ! current_theme_supports( 'widgets' ) ) {
		return;
	}

	$submenu['themes.php'][7] = array( __( 'Widgets' ), 'edit_theme_options', 'widgets.php' );
	ksort( $submenu['themes.php'], SORT_NUMERIC );
}