You can customize IntelliCAD® 2001 by adding custom programs written in any of several programming languages that run within IntelliCAD, including LISP, Solutions Development System™ (SDS), and Visual Basic for Applications (VBA). With IntelliCAD, you can run many programs originally created for use with AutoCAD. Specifically, you can use programs written entirely in AutoLISP with no modification.
IntelliCAD supports the AutoCAD dialog control language (DCL), which is used by AutoLISP functions to define the look of dialog boxes. You can use all DCL files unmodified within IntelliCAD.
To write applications in C or C++, IntelliCAD uses SDS, a C/C++ language interface compatible with the AutoCAD Development System (ADS) interface in AutoCAD.
You can also write custom applications to run within IntelliCAD by using VBA.
For more information about adding custom programs to IntelliCAD in one of the compatible programming languages, click the appropriate link here.
Solutions Development System™ (SDS)