Multiple models

You can use this multi-model capability to work at different levels of abstraction, while still maintaining traceability across models. The multi-model approach is a key paradigm shift because you can only open one Rose model at a time, which is sometimes cumbersome when you need to work and modify several related models in unison. Now you can open multiple models simultaneously and tie them together at various levels of your model hierarchy through shortcuts, relationships, and cross-references between models.