How to save and restore a form?

So, I have a form with a few dozen controls and someone would like to save and later restore their contents and settings - which radio button was selected, what was the Position of that up/down, etc.

I would also like to store any entries added to a list box at run time.

What's the simplest way to do it? DfmToString and reverse? Write/read a .INI? Something else?