Function Syntax: C3D_NamespaceFix Version: 1.0 Date: 20.06.2026 3:11:44PM N/A Description 🧩 C3D_NamespaceFix is an AutoCAD and Civil 3D diagnostic AutoLISP routine designed to inspect possible namespace problems affecting core arithmetic symbols and Visual LISP COM support. 📌 The routine checks the current state of the multiplication addition subtraction and division symbols and prints the results directly to the AutoCAD command line. Execution 🚀 There is no separate AutoCAD command defined by this LISP. ⚙️ The diagnostic runs immediately when C3D_NamespaceFix.lsp is loaded. Primary Workflow • The routine evaluates the multiplication symbol and checks whether its current type is SUBR. • If the multiplication symbol is not a SUBR the routine calls vl-load-com. • The same condition is checked again and vl-load-com can be called a second time. • A C3D Namespace Report header is printed. • The routine reports the detected type of the multiplication addition subtraction and division symbols. • Multiplication is tested through vl-catch-all-apply using 3 and 7. • AutoCAD COM access is tested through vlax-get-acad-object inside a protected call. • The routine checks whether vl-load-com is present in the current AutoLISP atom table. Functionalities ✅ Namespace inspection - checks the current function type associated with important arithmetic symbols. ✅ Visual LISP initialization attempt - calls vl-load-com when the multiplication symbol does not have the expected SUBR type. ✅ Second recovery attempt - repeats vl-load-com when the multiplication symbol still does not report the expected type. ✅ Arithmetic type report - displays the current type of multiplication addition subtraction and division. ✅ Protected multiplication test - evaluates the multiplication function through vl-catch-all-apply. ✅ COM availability test - checks whether vlax-get-acad-object produces a trapped error. ✅ Atom table verification - verifies whether vl-load-com exists in the AutoLISP symbol table. ✅ Command line diagnostics - prints all results in one compact namespace report. Important Diagnostic Elements 🔎 SUBR is the expected function type checked for the multiplication symbol. ⚙️ vl-load-com is the only recovery action attempted by the current source. 🧪 vl-catch-all-apply protects the multiplication and AutoCAD COM tests. 🔌 vlax-get-acad-object is used to test Visual LISP COM access to AutoCAD. 🧠 atoms-family is used to verify that vl-load-com exists in the atom table. Important Notes ⚠️ The routine does not directly redefine the arithmetic operators multiplication addition subtraction or division. ⚠️ The implemented fix action is limited to vl-load-com and therefore the file is primarily a diagnostic utility. ⚠️ The file name suggests namespace repair but the actual source mainly reports symbol state and tests Visual LISP COM availability. ⚠️ No drawing objects are selected modified created or deleted by this routine. SEO Keywords 🏷️ AutoCAD 🏷️ Civil 3D 🏷️ AutoLISP 🏷️ Visual LISP 🏷️ Namespace diagnostics 🏷️ vl-load-com 🏷️ COM diagnostics 🏷️ AutoCAD troubleshooting 🏷️ Civil 3D troubleshooting 🏷️ SUBR 🏷️ vl-catch-all-apply 🏷️ vlax-get-acad-object 🏷️ CAD diagnostics 🏷️ CAD automation