The document summarizes the new features in AutoCAD Mechanical 2010. It highlights a streamlined user interface with task-oriented tabs and customizable workspaces. It also describes new productivity tools like the constraint manager and improved rectangle, move, copy and rotate commands. Additionally, it mentions enhanced BOM and parts list functionality with automatic extraction and general enhancements. New content library features are discussed like part publishing, content management and updated content in the library. Finally, it briefly outlines improved symbol features for tapers, slopes and dead joints as well as a common symbol palette.