Creates one or more new directories or subdirectories. The
    /DIRECTORY qualifier is required.

    Requires write (W) access to the master file directory (MFD) to
    create a first-level directory. On a system volume, generally
    only users with a system user identification code (UIC) or the
    SYSPRV (system privilege) or BYPASS user privileges have write
    (W) access to the MFD to create a first-level directory.

    Requires write (W) access to the lowest level directory that
    currently exists to create a subdirectory.

    Format

      CREATE/DIRECTORY  directory-spec[,...]