<http://schema.org/about>
"Since the early days of computer aided design, the holy grail has been to not simply draw the building, but to build it in the computer and then drive the machinery to build it for real. Archicad and Revit now commonly build electronic versions of"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-product-design/11-making-the-digital-house.html>