Files in gwd *. Gwd format is the file format of Tsinghua Tongfang 2D CAD software MDS. MDS is an integrated system of mechanical design and drawing with independent copyright and integrating standardization and intelligence. It can be used in engineering design of various industries, especially in general mechanical design. MDS has friendly Chinese interface, intelligent design and drawing function supported by parametric technology, built-in electromechanical standard parts library meeting the latest national standards, and provides full navigation, so that engineering designers can get rid of drawing boards after short-term training. MDS 2002 adds support for raster images, spline curves, simplified polysemy lines and solid lines, which makes parallel work a reality. Because of MDS's good openness and strong follow-up development strength, MDS users always have international-level CAD products. CAD technology is the cornerstone of enterprise information management, and MDS is the best tool to build this cornerstone. Open TDF with Adobe Reader 7.0.