Smartform (printing plural result at once)

Hello Experts

I'm working on smartform programming at the moment.

I call the function module to call smartform in LOOP like

CALL FUNCTION 'SSF_FUNCTION_MODULE_NAME'

....

...

..

.

LOOP AT itab into WA.

CALL FUNCTION function_name.

ENDLOOP.

and I want to see plural result at once.

I think it's related to the option 'SELECT_OPTIONS' which is one of the default option of smartform.

Does anybody know how to use this option?