You can place a subform anywhere on a page; however, when a large amount of data is merged with the form, the subform may expand beyond the bottom edge of the rendered page. To deal with this issue, you can either select the Allow Page Breaks Within Content option to cause the server to break the subform in the middle or deselect this option to force the entire subform to the top of the next rendered page. Forcing a subform to the next page ensures that any nested subforms are displayed together on the same page. If you do not select the Allow Page Breaks Within Content option, you will probably want to create an overflow leader and overflow trailer subform. (See Overflow leader and trailer subforms.)When data is merged, the server positions the content of a subform within the confines of content areas only. In cases where a large amount of data needs to be merged with any of the objects in a subform, a subform may span multiple form pages. When a form page is filled, the server automatically renders another identical page and continues to place the subform on the new page unless you explicitly direct the flow to a different content area or master page. When more than one content area or master page exists in the same form, you can specify whether a subform will be placed in a particular content area or positioned according to the specified master page.