*******************************************************************
    *                                                                 *
    *        DDJ files and material are available at                  *
    *                http://www.ddj.com/                              *
    *                                                                 *
    *             please go there for access                          *
    *                                                                 *
    *        Questions may be addressed to editors@ddj.com            *
    *                                                                 *
    *                        Thanks!                                  *
    *                                                                 *
    *******************************************************************