View, print, zoom, pan, rotate & measure 2D/3D Cad Files (DWG, DXF, DWF,DXB). Convert between various document types (DXF, DWG, DWF, & DXB) and versions (r12, r13, r14, AutoCAD 2000, 2004, 2006, 2007) and export to images (JPEG, BMP), & PDF files. Full support for drawing layouts is included. Users can select an "active" layout and then export it to PDF or image. Plot style file support allows for easy mapping of colored drawings to greyscales.