By the way, while this "dividing into sections" with a magic wand feature works perfectly, I am wondering if it's possible (I'm going towards perfection)
to make these sections separate, or at least mark this in the plan view (like in the attached image) - I only need this for graphical representation of separate sheets of glass in plan view. Is it also possible to make gaps between these sheets? This would be perfect, and I believe it's possible, but in any way, is just a minor inconvenience.
Thanks again!