RETRIEVE,
    CLASS      = MS,
    COUNTRY    = IT,
    MODEL      = HRM,
    BCMODEL    = IFS,
    ICMODEL    = MVOI,
    DOMAIN     = EUROATL,
    STREAM     = OPER,
    TYPE       = FG,
    EXPVER     = 0001,
    LEVTYPE    = 110,
    PARAM      = 201033,
    TIME       = 1800,
    DATE       = 20040102,
    STEP       = 6,
    LEVELIST   = 1,
    TARGET     = reference.data,
    GRIB       = ECMWF