Using LiveCycle Designer ES,you can create interactive forms for data capture that have a flowable layout. This type of form combines both flowable elements and interactive form functionality so that users can enter data directly into expandable fields, add or remove sections, and return the form data electronically. For example, you might create an interactive form where users can add or remove item rows and can choose to add their comments to the form. For more information, see Form design layouts.
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About interactive forms that have a flowable layout