[NetToolKit]

The demo is a little unclear. The instructions says to "Click [shape]" and I think you should probably delete that, since I don't see the shape anywhere else on the page. Starting with "Click where to start" is probably clear enough, although I think you can clarify the language further.

After someone clicks the "delete selected shape" button, you should probably resume the click-shape mode (with the crosshair cursor). It took we a while to figure out how to start clicking the shape and that I need to refresh the page if I want to restart.

Beyond that, I only got it to give me results when I specified a very small area; my earlier attempts encountered a "too big" error. I would guess that you are running into performance issues for larger areas, but limiting the area too much makes the demo less impressive.

[laurentabbal]

Thanks. I will take into account these remarks.