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action is not described

atom_head action-hook . WP 2.0.0

Fires just before the first Atom feed entry.

Usage

add_action( 'atom_head', 'action_function_name_4243' );
function action_function_name_4243(){
	// action...
}

Where the hook is called

In file: /wp-includes/feed-atom.php
atom_head
wp-includes/feed-atom.php 48
do_action( 'atom_head' );

Where the hook is used (in WP core)

wp-includes/default-filters.php 312
add_action( 'atom_head', 'atom_site_icon' );
wp-includes/default-filters.php 308
add_action( $action, 'the_generator' );