WordPress at a glance
action is not described

woocommerce_checkout_order_review action-hook . WC 1.0

Usage

add_action( 'woocommerce_checkout_order_review', 'action_function_name_1328' );
function action_function_name_1328(){
	// action...
}

Where the hook is called

In file: /templates/checkout/form-checkout.php
woocommerce_checkout_order_review
woocommerce/templates/checkout/form-checkout.php 59
<?php do_action( 'woocommerce_checkout_order_review' ); ?>

Where in WP core the hook is used WooCommerce

woocommerce/includes/wc-template-hooks.php 216
add_action( 'woocommerce_checkout_order_review', 'woocommerce_order_review', 10 );
woocommerce/includes/wc-template-hooks.php 217
add_action( 'woocommerce_checkout_order_review', 'woocommerce_checkout_payment', 20 );