The Get service retrieves a record from a file.

                                   NOTE

       When you invoke the Get service, RMS takes control of the
       record buffer and may modify it. RMS returns the record size
       and guarantees the contents only from where it accessed the
       record to the completion of the record.

                         RAB64 USERS (ALPHA ONLY)

       On Alpha systems, RAB64 can replace the RAB or RAB prefix
       wherever it is used with the Get service on OpenVMS Alpha
       systems.

    Format

      SYS$GET  rab [,[err] [,suc]]