Creating a copy of a mc

1

Hello,
I am creating a new instance of a class file lets say Person

var p:Person = new Person();

and then i am customizing it…

p.height = 44;

etc

now I am making 10 or 20 persons in a for loop… but how can I clone ONE specific(3rd )of those
I was thinking

if(i==3){
// create instance of the already customized one .. i seen this done before but i cant seem to find info on it.. something like var newp3:DisplayObject as Person()??? please help

}