Wordpress/wp-includes/version.php

<?php
/*
WordPress - Web publishing software

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

/**
 * The WordPress version string
 *
 * @global string $wp_version
 */
$wp_version = '3.1-RC4-17441';

/**
 * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
 *
 * @global int $wp_db_version
 */
$wp_db_version = 17056;

/**
 * Holds the TinyMCE version
 *
 * @global string $tinymce_version
 */
$tinymce_version = '3393';

/**
 * Holds the cache manifest version
 *
 * @global string $manifest_version
 */
$manifest_version = '20111113';

/**
 * Holds the required PHP version
 *
 * @global string $required_php_version
 */
$required_php_version = '4.3';

/**
 * Holds the required MySQL version
 *
 * @global string $required_mysql_version
 */
$required_mysql_version = '4.1.2';