WordPress at a glance
action is not described

rss2_comments_ns action-hook . WP 2.8.0

Fires at the end of the RSS root to add namespaces.

Usage

add_action( 'rss2_comments_ns', 'action_function_name_9619' );
function action_function_name_9619(){
	// action...
}

Where the hook is called

In file: /wp-includes/feed-rss2-comments.php
rss2_comments_ns
wp-includes/feed-rss2-comments.php 31
do_action( 'rss2_comments_ns' );

Where the hook is used (in WP core)

Does not used.