<http://schema.org/keywords>
"SECTION WALL, SECTION OPENING, KITCHEN, SECTION SLAB, SECTION FOUNDATION, roof, mezzanine, slab, stair, reservoir, Mezzanine, Dach, Treppe, Platte, mezzanine, toiture, escaliers, dalle, mezanino, telhado, escadas, lajes"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bibliocad.com/library/section--wall-in-kitchen_57106>