WordPress at a glance
action is not described

rss2_head action-hook . WP 2.0.0

Fires at the end of the RSS2 Feed Header.

Usage

add_action( 'rss2_head', 'action_function_name_4733' );
function action_function_name_4733(){
	// action...
}

Changelog

Since 2.0.0 Introduced.

Where the hook is called

In file: /wp-includes/feed-rss2.php
rss2_head
wp-includes/feed-rss2.php 83
do_action( 'rss2_head' );
wp-admin/includes/export.php 522
do_action( 'rss2_head' );

Where in WP core the hook is used WordPress

wp-includes/feed-rss2.php 324
add_action( $action, 'the_generator' );
wp-includes/feed-rss2.php 329
add_action( 'rss2_head', 'rss2_site_icon' );