Is it possible for a person filling out a form to save it, close it, and return to it later?

Hi,

It is indeed possible to allow for saving and continuing later.  It does take a small bit of setup.  Here is our guide on how to do so:

http://www.jotform.com/help/97-How-to-Save-Forms-and-Continue-Later

If you have any further questions, let us know and we will be happy to help.