    _______ _     _ _     _ __   _ _     _ __   _ _______ _______
    |       |_____| |     | | \  | |____/  | \  | |______    |
    |_____  |     | |_____| |  \_| |    \_ |  \_| |______    |
                                                              
              distributed chunk-based R environment
            dramatis personae: client, locator, worker
