AutoCAD 2006 introduced several tools that remain foundational to the software today.
This was the headline feature. It allowed users to create a single block that could change shape, size, or configuration (e.g., a door block that can be flipped or resized) without exploding it. autocad 2006
This replaced the old MNU and MNS files. It provided a single, centralized dialog box for customizing toolbars, menus, and keyboard shortcuts. or configuration (e.g.