Meaning that changing to SVG window paths at the same time will delete the others?

Thanks. Looks good. Much easier than opening .properties file.

ok

PS I guess users who edit SVG cutouts, may also want to change other doorOrWindow properties (and lightsource), so I don't think you should be too afraid of including the more advanced properties too (especially ID which is a pain to add manually), just put them far down in the window saying "optional/advanced".