Fine, I actually don't really mind.

I guess my main (implicit) point was that I'm not going to dig any 
further since it satisfy me at this point: that's the code that will be 
shipped with muO for 4.1, until Squeak catches up... so feel free to 
improve my implementation and submit it.

By the way Pharo has full-length grips on windows size, so maye there is 
something to get from there.

Stef