%if FLEXTRA_PREPARE_MODE = FORECAST %then 
 		%unset FLEXTRA_PERIOD_START_DATE
		%unset FLEXTRA_PERIOD_START_TIME
		%unset FLEXTRA_PERIOD_END_DATE
		%unset FLEXTRA_PERIOD_END_TIME
		%unset FLEXTRA_PERIOD_STEP
		%unset FLEXTRA_AN_MARS_EXPVER

%if FLEXTRA_PREPARE_MODE = PERIOD %then 
        %unset FLEXTRA_DATE
		%unset FLEXTRA_TIME
		%unset FLEXTRA_STEP


%if FLEXTRA_INPUT_SOURCE = MARS %then
        %unset FLEXTRA_INPUT_FILE
        %unset FLEXTRA_GRID_INTERPOLATION

%if FLEXTRA_GRID_INTERPOLATION = OFF %then
        %unset FLEXTRA_AREA
        %unset FLEXTRA_GRID
