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LibreCAD 2D Architecture: From addHistory to RS_UndoCycle, Two History and Undo Systems

【LibreCAD 2D架构】从 addHistory 到 RS_UndoCycle：LibreCAD 里的两套 History 与撤销机制

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LibreCAD 2D Architecture: From addHistory to RS_UndoCycle, Two History and Undo Systems | ThreadEast