WordPress at a glance
action is not described

commentsrss2_head action-hook . WP 2.3.0

Fires at the end of the RSS2 comment feed header.

Usage

add_action( 'commentsrss2_head', 'action_function_name_3572' );
function action_function_name_3572(){
	// action...
}

Where the hook is called

In file: /wp-includes/feed-rss2-comments.php
commentsrss2_head
wp-includes/feed-rss2-comments.php 68
do_action( 'commentsrss2_head' );

Where the hook is used (in WP core)

wp-includes/default-filters.php 308
add_action( $action, 'the_generator' );