YES

    Enables RMS related name context processing. If an option RMS_
    RELATED_CONTEXT=NO is in effect, its saved related name context
    is restored. If RMS related name context processing is already
    enabled, this option has no effect.

    RMS related name context processing is enabled by default.
    Therefore command line file specifications are processed with RMS
    related name context. Also, RMS related name context processing
    is enabled at the start of each options file. The related name
    context is limited to a single options file. That is, the saved
    related name context is cleared at the start of each options
    file.

 NO

    Disables RMS related name context processing. If an option RMS_
    RELATED_CONTEXT=YES is in effect, the current name context is
    saved for a possible future RMS_RELATED_CONTEXT=YES option.
    If RMS related name context processing is already disabled,
    specifying RMS_RELATED_CONTEXT=NO has no effect.