Hi John,

Thank you for the feature request. When we launched Cool Calc in the beginning of 2015 most sites that offered floor plan editing used "flash" based editors. We did not want to add a flash editor since it is not supported on many mobile devices/ tablets and we feel the technology is slowly going away.

Our outline is displayed in html5 which works in most modern browsers. The good thing is html5 has come a long way since we first launched the site. We are now working on a much more robust html5 editor that not only allows you to edit the outline, but also the interior walls and windows.

Bill