[Newbies] Can I make a window outside of the "world?"

[Rick H.]

Hi all. 

I'd like to make an operating system window, that can go outside of 
the "world."  I found a nice Sample Image Viewer by Michael Davies.  It uses a 
SystemWindow, but it also is constrained to be within the Squeak box.  Do you 
understand what I am thinking of?  Is it possible? 

         Regards, Rick