Media Robot Utility software (MRU) is a multiplatform utility for
    controlling robotic media loaders and libraries.  The MRU allows
    you to control operations at a very low level:  injecting and
    ejecting cartridges, loading and unloading cartridges, and showing
    status and attributes of robotic loaders and libraries.

                               CAUTION

    MRU provides no media management or cataloging capability.  Use
    MRU in a managed media environment with care.  Manipulating
    cartridges with MRU and without knowledge of the media management
    system could create inconsistency between the media management
    system's view and the physical status of the robot and cartridges.