The PowerDesigner requirements model provides various means for customizing and controlling your modeling environment.
Setting RQM Model Options
You can set RQM model options by selecting Tools Model Options or right-clicking the diagram background and selecting Model Options.
Extending your Modeling Environment
You can customize and extend PowerDesigner metaclasses, parameters, and file generation with extensions, which can be stored as part of your model or in separate extension files (*.xem) for reuse with other models.
Creating Links with Extended Dependencies
Extended dependencies can be created between any model objects, including between objects in different models. They are used for documentation purposes only, and are not interpreted or checked by PowerDesigner.