The big chance of this program is that it was first a study case of a French book about Java / Swing I wrote in 2006, so I took great care to make its architecture and its code as clear as possible for readers, and kept the same direction since that time (even if I had to adjust a few things time after time).

Hi, Emmanuel.
You wrote an excellent book, but it is very difficult to perceive the French (I'm Russian). [:(]
SweetHome3D multilingual community, and I think many would like to have a book at least in English. Or may be a series of articles based on the book. Source code and comments to them - it's very good, but I would like to understand the architecture of the program.
I think many people will be grateful if such articles appear. [;)]