WordPress at a glance
action is not described

rss_tag_pre action-hook . WP 1.0

This action is documented in wp-includes/feed-rss2.php

Usage

add_action( 'rss_tag_pre', 'action_function_name_5271' );
function action_function_name_5271( $string ){
	// action...
}
$string
-

Where the hook is called

In file: /wp-includes/feed-rss2-comments.php
rss_tag_pre
wp-includes/feed-rss2-comments.php 13
do_action( 'rss_tag_pre', 'rss2-comments' );
wp-includes/feed-atom.php 14
do_action( 'rss_tag_pre', 'atom' );
wp-includes/feed-atom-comments.php 12
do_action( 'rss_tag_pre', 'atom-comments' );
wp-includes/feed-rss2.php 21
do_action( 'rss_tag_pre', 'rss2' );
wp-includes/feed-rdf.php 14
do_action( 'rss_tag_pre', 'rdf' );

Where in WP core the hook is used WordPress

Usage not found.