Fantastic. I notice some oddities (win8) that appear not to be functional (javastart issue?):
- undo / redo,
- drag-drop furniture (file or catalogue) in plan

As for the auto_guess cut_out shape, I am impressed. Preliminary testing shows even strange shapes ( http://advokatredet.no/design/xxxxx.zip ) are cut out correctly. So playing with SVG paths is not really a required skill (but it is not impossible, even if it requires some frustrating trying and failing - mostly failing - to begin with... ).

ok