WordPress at a glance
function is not described

the_title_rss() WP 0.71

Display the post title in the feed.

No Hooks.

Return

Nothing (null).

Usage

the_title_rss();

Code of the title rss: wp-includes/feed.php VER 5.1.1

<?php
function the_title_rss() {
	echo get_the_title_rss();
}