. "15.3.331" . . . . . . "SketchUp (formerly Google Sketchup) is a 3D modeling computer program for a wide range of drawing applications such as architectural, interior design, civil and mechanical engineering, film, and video game design\u2014and available in a freeware version, SketchUp Make, and a paid version with additional functionality, SketchUp Pro.SketchUp is currently owned by Trimble Navigation, a mapping, surveying, and navigation equipment company."@en . . . "SketchUp"@en . . .