An engineer's viewer for users who don't have or don't know CAD. In addition to DWG, DXF DWF,HPGL (PLT) and Acrobat PDF files the application opens many raster formats including TIFF, JEDMICS C4, CALS and BMP. Tools are provided for measuring of lengths, perimeters and areas. Features include an automated comparator which displays the differences between two versions of the same drawing, markup and export of markup in CAD formats and precise printing and scaling controls. Supports AutoCAD DWG versions 12 through 2008.