A method and system for controlling a transmission in a work machine is provided. At least one retention structure is located in the intervertebral disc space. A method for adjusting the settings of this lamp permits the optimum illumination for a particular subject to be found, whilst the latter carries out a task such as reading or writing. Subsequently, protective elements are obtained which extend within the delimitation structure and coat the resistive region. The sets of cache memory within a cluster are also coupled to one another. Grinders remove matter from the well pipe.