Free DWG Viewer will open native DWG, DXF, and DWF files for viewing, along with accompanying Xref files. It will also open Informative Graphics' own "content sealed" (CSF) file format, which is generated by the company's Net-It publishing products and featuring Visual Rights security options for file content. The DWG viewer also supports IGC's legacy formats from previous versions of Brava! and MYRIAD. Based on ActiveX, IGC's Free DWG Viewer serves as a stand-alone desktop application, or an ActiveX control that can be invoked from a specified application, such as Internet Explorer. Printing and markup functions are available in IGC's fee-based viewing products. For a full-featured viewer, IGC recommends it's MYRIAD 2D/3D desktop viewing software. View native AutoCAD r12 to 2005 files.