Form & Back Button

Hey all,

I was wondering if there is away to keep the data a user entered into a form filled in when they press back. Lets say someone fills in a form and presses submit. They then realize they made a mistake and press the backbutton. I want the old data they filled in to still be there. Is this possible?

I guess I could use sessions and save it and fill it, right?

 

There for sure is a way to do it.

I am not sharp enough right at this moment to tell you how.