VMS Help SET, RMS_DEFAULT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Defines default values for multiblock and multibuffer counts,
    network transfer sizes, prolog level, extend quantity, and the
    query lock option used by OpenVMS Record Management Services
    (RMS) for file operations.

    If you set the default value for either the multiblock count or
    the multibuffer count at 0, RMS tries to use the process default
    value or the system default value, in that order. If these are
    set at 0, RMS uses a default value of 1. Defaults are set for
    sequential, relative, or indexed file organizations on a process-
    only basis, unless a systemwide basis is requested.

    Format

      SET RMS_DEFAULT

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