Can you edit submissions?

Once someone has submitted responses on a form, is there a way to change that information?  If so, is that done on the back end only, or does the submitter receive a link to edit/update?

You can add the edit link in your autoresponder email so users can update their submissions data.

Guide: http://www.jotform.com/help/40-How-to-Let-Users-Update-Their-Form-Submissions-at-a-Later-Date