Magento simple Hello World extension: Application configuration file

Tutorials_HelloWorld.xml

<!--
/**
 * Magento simple Hello World extension: Application configuration file
 *
 * Specifies the extension's namespace (Tutorials_HelloWorld),
 * that the extension is active, and is in the community
 * code pool. Provided for documentation purposes for the 
 * Magento 1.x Extension Developer's Guide
 * 
 * @copyright Copyright (c) 2014 eBay Inc. (http://www.magentocommerce.com)
 */
-->

<?xml version="1.0"?>
<config>
    <modules>
        <Tutorials_Hello>
            <active>true</active>
            <codePool>community</codePool>
        </Tutorials_Hello>
    </modules>
</config>