How to save a multpile choice?

Im going to make this simple.

I've made a multiple choice button here it is :

-Function Update () { print ("Hello") } -Function OnGUI() if (GUI.Button(Rect(20,40,100,40),'Hello')) { var answer1=print ("How are you?"); answer1.rendrer.enabled=true;

}}

Ok before any comment shows up, I'm aware that my script is wrong. (and if someone can correct it, I thank him for that, it'll be of great help)

But that is not what I want know.

I just want to know how is it possible to save this "function" or choice?

I mean I want to make a rewind button, in the game, that will allow player to come back to another choice option he already made.

Like a save game.

I'm taking this idea from this game: http://ded.increpare.com/~locus/Detective_Clean/

Try it, and try the rewind button you'll understand what I mean.

I want to know how I can save this multiple choice as per exemple "choice 1" and get back to it if i choose in the game to rewind to choice 1.

Thanks