Objects in the subform are positioned
according to their individual X and Y coordinates. When the form
is rendered, the subforms are placed in an order determined by their
positions in the Hierarchy palette.
All subforms except the root subform (form1) are set to position
content by default. When a subform is set to position content, the
subform can still expand to fit any amount of merged data, but none
of the objects within the subform can move from their anchor points.
As a result, if a subform is configured to position content, you
must frequently test your form design to make sure that any objects within
the subform that you expect to expand in response to data merging
do not interfere with other objects in the form design. Remember
that any objects you configure to expand, such as text field objects,
can possibly overlap other objects when the form is rendered. To
avoid this design concern, you can set the subform to flow and expand
to fit the content. (See Subforms that flow content.)
Designer automatically sets the default page subform to position
content to make it easier to create forms that have a fixed layout
and are interactive forms. For more information, see About subforms.
However, when designing a form whose layout will adjust to accommodate
data, you will need to reset the default page subform to flow content
after you complete the form design. It is a good idea to do this
last so that the subform remains visible and the objects you place
within the subform remain in the intended position on the page.
You use the Position Content option in the Type list in the Subform
tab to position content in a subform. When you select the Position
Content option, the X and Y coordinates of each object within the
subform are maintained. The objects are placed at their X and Y
coordinates relative to the position of the subform.
When designing nested subforms to emulate tables, the header
subform has to be "positioned" content. Otherwise, the field elements
are not positioned properly on subsequent pages.