Make 3.9 final "window" smaller

Hi,

This seems like the stupidst question ever, but...

I downloaded the Squeak 3.9 final image.  But when I open in on my 12"
powerbook, the Squeak window is larger than my 1024x768 screen.  So
the bottom and right go off my screen.

How can I make the window smaller?

As far as I know on my mac there isn't a window resize apart from
dragging the bottom right corner, which I can't get to....

Thanks,
Steve