About key items in a repeating form or section

In repeating forms and repeating sections, you can identify certain items as key items. In the InForm application, key items are used to:

Simplify navigation to a specific instance of a repeating form. The values of key items appear in a drop-down list in the summary view of the repeating form, and users can navigate to a specific instance of the form by clicking the key item values for that instance.
Verify that the values of certain items are unique among instances of a repeating form or an itemset.