Page break in smartform

Hello Experts,

I am printing some lines in Template in smartforms. As per the size of template only some of the lines are getting displayed in the template.

My requirement is suppose if there are 12 lines in my internal table and only 3 lines can be displayed in template on a single page at a time, then on next page in the template lines 4,5,6 will get displayed likewise on further pages lines 7,8,9 and 10,11,12 will get displayed subsequently.

As per the requirement I cannot use main window to achieve this.

How should I achieve this.

Please help.