[Inkscape-devel] Implementaion of Division Command

What's the reasoning behind Inkscape's implementation of Division as opposed to having two overlapping shapes resulting in three pieces, including the exclusion area of the top (stacking order) shape in addition to the exclusion area of the bottom object and intersection?

I illustrated the question at http://www.angelfire.com/mi/kevincharles/inkscape/division.html

Thanks, -Kevin