Objects in the subform are positioned
during the data-merging process so that no objects are rendered
on top of each other. Subforms that flow content are placed in ascending
order. You can use subforms that flow content when you need the
form to automatically expand to fit the contents.
The root subform (form1) is set to flow content by default. The
root subform always flows content according to the flow direction
option that you apply to the associated default content area. Because
the root subform is set to flow content, all subforms nested under
the root subform automatically flow, as needed, from one form page
(content area) to the next when data is merged. When the form is rendered,
the subforms under the root subform are placed in descending order according
to their position in the object hierarchy.
You can set any other subform to flow content as well. Each subform
that is set to flow content can hold varying amounts of data, whereas
the objects within the subform move together during the data-merging
process so that none of the objects interfere with each other.
You use the Flow Content option in the Type list in the Subform
tab to flow content in a subform. When you select the Flow Content
option, the objects are positioned based on the Flow Direction option
you select. Notice that the Flow Direction list and the Allow Page
Break option are enabled after you select Flow Content in the Type
Note: When you resize a subform that flows content,
the subform is automatically converted to a subform that has a fixed
layout, which prevents page breaks.