nesting cells in wxMaxima ?



Hi,

I've dowloaded the latest version of wxMaxima, and I like it a lot.

I was wondering though if it is at all possible to nest cells, like you can 
in mathematica?
I think so, because I unintentionally stumbled upon it (a cell in a cell), 
but I don't know how I did it, and I'm not able to reproduce it. I couldn't 
delete the "mothercell" either, but after saving, closing and reopening, it 
was gone altogether.

Anyway, I didn't find antything in the tutorials I've read so far, so I 
thougt I'd ask it here.

If it isn't possible, it would be a nice add-on, I think. Nothing major, 
just handy...

Thanks.

Rudy