: Users can compare past and present versions of a drawing to see the evolution of their work.
The MEASUREGEOM command, which provides real-time distance readouts as you move the cursor, added area support.
The Blocks Palette, first introduced in AutoCAD 2020, received a significant upgrade in 2021. The enhanced palette made it easier than ever to manage and insert blocks. Key improvements included:
The 2021 version prioritized background automation, allowing users to cross-reference design changes instantly. Xref Compare AutoCAD 2021
: Similar to the drawing compare tool, this lets you track changes made to external references without leaving your main drawing.
Access your most frequently used blocks from any device logged into your Autodesk account.
AutoCAD 2021 continues the push toward the "One AutoCAD" experience, which provides users with specialized toolsets for different industries. : Users can compare past and present versions
在新版本推出之前，设计师若要追踪一张图纸的演变过程，通常依赖于繁琐的本地文件命名习惯（如“XX图纸_v1”、“XX图纸_最终版”），这不仅极易造成混乱，更使得团队协作中的版本回滚异常困难。AutoCAD 2021引入的“图纸历史”功能，借助云存储服务（OneDrive、Dropbox及Box）的力量，彻底颠覆了这一传统模式。
: Users no longer need to press Enter to select boundaries; hovering and clicking immediately modifies the line work.
: Similar to the "DWG Compare" tool, this allows users to see changes made to an external reference (Xref) without leaving the host drawing. Blocks Palette Improvements The enhanced palette made it easier than ever
AutoCAD 2021作为该软件向现代化协作工具转型的一座里程碑，其战略价值值得高度肯定。它通过“图纸历史”与“外部参照比较”两大功能，在行业内率先确立了“非破坏性协作”的基本范式。在订阅制体系中，将七大专业工具组合打包进标准版的做法，也为后续版本的定价策略奠定了基础。该版本在发布后整体保持稳定，并获得了用户的积极评价。
Work without installing software, directly in a web browser. Access cloud-stored files anytime. Conclusion