It can open 3D data files in step (. STP or. Step) and .iges format, and use perspective or orthogonal projection to view the model in 3D, rotate, translate, zoom in / out, measure distance, position, volume, area, length, radius, angle, boundary, etc. Multiple files can be opened in the same window to compare 3D models. It is very powerful and super easy to use. It is fast and can load huge models. It is a great tool for viewing, reviewing, and collaborating on 3D assets.