Order Status Email Content

Hi, where do I edit the order status email content?

\admin\language\english\mail\order.php

I can only see the following in that file:

<?php
// Text
$_['text_subject'] = '%s - Order Update %s';
$_['text_order'] = 'Order ID:';
$_['text_date_added'] = 'Date Ordered:';
$_['text_order_status'] = 'Your order has been updated to the following status:';
$_['text_comment'] = 'The comments for your order are:';
$_['text_link'] = 'To view your order click on the link below:';
$_['text_footer'] = 'Please reply to this email if you have any questions.';
?>

I want to know where to change the actual text that is sent with, for example, a canceled order.