WordPress at a glance
action is not described

sanitize_comment_cookies action-hook . WP 2.0.11

Fires when comment cookies are sanitized.

Usage

add_action( 'sanitize_comment_cookies', 'action_function_name_1492' );
function action_function_name_1492(){
	// action...
}

Where the hook is called

In file: /wp-settings.php
sanitize_comment_cookies
wp-settings.php 357
do_action( 'sanitize_comment_cookies' );

Where the hook is used (in WP core)

wp-includes/default-filters.php 328
add_action( 'sanitize_comment_cookies', 'sanitize_comment_cookies' );