Because the length of an interactive form containing subforms that are set to flow content can vary depending on the amount of data displayed in the form, the form often has more than one page. As a result, you may want certain subforms (sections) in the form to continue on subsequent pages.Using overflow leader and overflow trailer subforms, you can designate different subforms to precede and follow repeating or expanding subforms that are likely to carry over to additional pages. Overflow leaders and trailers are special types of subforms that you can use in form designs that have a flowable layout. After you specify a subform as an overflow leader subform in the Binding tab of the Object palette, the subform appears at the top of each new page.For example, you can use the heading row at the top of a table as an overflow leader subform. This way, the heading row is repeated at the top of each new page, making the information in the table rows easier to read and follow from page to page.In a similar manner, you may also want to assign an overflow trailer subform to follow the last occurrence on a page of a repeating or expanding subform that could possibly span multiple pages.