FLEXPART_PREPARE; FLEXPART_prepare
{
    PREPARE_MODE [interface = option_menu ]
    {
        FORECAST ; FORECAST
        PERIOD ; PERIOD
    } = FORECAST

    INPUT_SOURCE [interface = option_menu ]
    {
        MARS ; MARS
        FILE ; FILE
    } = MARS

    INPUT_FILE
    {
      @
    } = ''

    FC_MARS_EXPVER [ visible = false]
    {
      @
    } ='1'

    AN_MARS_EXPVER [ visible = false]
    {
      @
    } ='1'

    DATE
    {
      *
    } = -1

    TIME
    {
      *
    } = 0

    STEP
    {
    TO  ;   TO
    BY  ;   BY
    /
    *
    } = 0/6

    PERIOD_START_DATE
    {
      *
    } = -1

    PERIOD_START_TIME
    {
      *
    } = 0

    PERIOD_END_DATE
    {
      *
    } = -1

    PERIOD_END_TIME
    {
      *
    } = 0

    PERIOD_STEP [interface = option_menu ]
    {
           1 ; 1
           3  ; 3
           6 ; 6
    } = 3

    GRID_INTERPOLATION
    {
            ON ; ON
            OFF ; OFF
    } = ON

    AREA
        [
                help = help_input,
                help_icon = 'help_map',
                input_type = map,
                input_window = '/Metview/Defaults/Input Window'
        ]
    {
        *
        /
    } = -90./-179./90./180

    GRID
    {
      *
      /
    } = 1/1

    TOP_LEVEL
    {
      *
    } = '1'

    TOP_LEVEL_UNITS [interface = option_menu ]
    {
        MODEL_LEVELS ; ML
        HPA ; HPA
    } = 'ML'


    REUSE_INPUT [interface = option_menu ]
    {
           ON  ; ON
               OFF ; OFF
    } = ON

    OUTPUT_PATH
    {
      @
    } = ''

}
