System Composer™ provides built-in element types: components, ports, and connectors. Create element stereotypes (2) to extend element types with additional properties (5) that help capture and analyze nonfunctional requirements. Package stereotypes into profiles (1) to provide self-consistent architectural domains. Share profiles between models to ensure consistency within a project.

Stereotypes (2) have names and also a set of additional properties that can be used to capture additional data about an element. Model elements can have multiple stereotypes.