[STUMP] floating windows

Hello once again,

I have a general question about StumpWM. I see that you can make a new 
group/desktop, and set every frame in the group to float. Is it possible 
to have a single floating frame in an other wise tiled group?

Tiling works for me most of the time, but I occasionally use a program 
that produces a graphics window that must be of a set size, the 
dimensions changing from time to time. So this one window really has to 
float, and it's fine to have it float over top of the tiled windows. Is 
that possible? Otherwise I can make do with the occasional use of a 
floating group.

Best,

Tyler