File Source for requirements

<?php
/**
* @version $Header$
* @package kernel
* @subpackage functions
*/
/**
* Setup
*/
require_once( '../kernel/setup_inc.php' );
$gBitSystem->verifyPermission( 'p_admin' );
global $gBitInstaller;
$gBitInstaller = &$gBitSystem;
$gBitInstaller->verifyInstalledPackages();
$gBitInstaller->drawRequirementsGraph( !empty( $_REQUEST['install_version'] ), ( !empty( $_REQUEST['format'] ) ? $_REQUEST['format'] : 'png' ), ( !empty( $_REQUEST['command'] ) ? $_REQUEST['command'] : 'dot' ));
?>

Source for file requirements_graph.php