I haven't tested this but for 4 I would assume something similar to
the following should work.
var sometext:UITextField;
sometext.styleName = UITextField
in your style sheet you should be able to now set styles and the font,
UITextField{
fontFamily: ...;
}
if you call it UITextField you may not have to assign the styleName. I
probably don't have all of this right but it should at least help you
get in the right direction.
> 4. How do I set the font of UITextField with stylesheet, or embedded
> font