© 2012 Autodesk
§1. Start with a Class Library application type (DLL)
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§2. Add references to AutoCAD’s managed assemblies
§acdbmgd.dll, acmgd.dll & accoremgd.dll
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§3. Add the namespaces
§ In VB use Imports keyword, in .C# use the using keyword
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§ 4. Add an AutoCAD command using CommandMethod  attribute.
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§  5. Create the procedure that will run when the command is run in AutoCAD
§ using the classes from the AutoCAD managed assemblies.
§(acmgd.dll,  acdbmdg.dll & accoremgd.dll)
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Recap the steps