Golden Rectangular Solid isn`t a conventional graphic editor. It lets you create rectangles in 3D from other rectangles in 2D that you create first.
Each of the rectangles in Golden Rectangular Solid is subdivided repeatedly in order to get the parts with the same proportions as the original rectangle (denominated in the program interface as the golden rectangle).
Among the Golden Rectangular Solid editing options the user can specify the lines, faces and vertices of the rectangle, and also the spiral curves that can be formed.