In computer-aided design (CAD) software like AutoCAD and BricsCAD, BLOCKREPLACE is an Express Tools command used to globaly swap out every instance of a specific visual layout component (block) with a different one. How BLOCKREPLACE Works
The command searches your entire drawing for references to a designated block name and replaces them with an internal block definition already loaded into your file.
Properties Retained: The newly placed blocks automatically retain the unique scale, orientation/rotation, and attribute values of the original instances.
Drawing Cleanup: When running the command, you are typically prompted with an option to purge unreferenced block definitions. Saying yes removes the old block blueprint entirely from your file, instantly trimming file size. Key Limitations Replacing Blocks in AutoCAD: REPLACE vs BREPLACE