CD, Visual Studio Class Diagram (.cd)
The CD Developer file format
CD files are most commonly associated with the Microsoft Visual Studio software development suite. These files contain information in form of diagrams. This is also where the name of the file extension comes from; CD stands for class diagram. The diagrams inside the CD file help developers to understand source code since it is represented in a visualized manner.
Technical details of CD files
In order to create CD files, you have to navigate to a certain function of the Microsoft Visual Studio suite. They are exclusively made by the Class Diagram editor. The visualization of the diagrams is created in the XML format.