Can you update or revise a submitted form?

Many applications need to be updated or revised, particularly if they are part of an approval process.  Once a form has been submitted, can it be "returned' or edited by the submitter if given the hyperlink for the specific form they originally submitted.

Yes, this is possible. You can see how to do it here: http://www.jotform.com/help/40-How-to-Let-Users-Update-Their-Form-Submissions-at-a-Later-Date

Let us know if this is what you're trying to accomplish.