Modules are windows in the Visual Basic Editor where you write VBA code. The modules have word processing and other features that simplify writing VBA code. There are the following kinds of modules:

Module	Uses
ThisDrawing	Simple procedures to extend the functionality of your drawing or project.
Class	New object definitions
Standard	Procedures and declarations that other modules in your program access frequently
User Form	User interface for your macro

Every VBA project starts with a class module called ThisDrawing. ThisDrawing represents the class object that defines the AutoCAD Map drawing.

For step-by-step information about using ThisDrawing and other modules, click .