New actor. This is the same concept as actors in a UML use case diagram.
New Boundary. This represents software elements such as
screens, reports, HTML pages, or system interfaces that actors interact
with. Also called interface elements.
New controller. This serves as the glue between
boundary elements and entity elements, implementing the logic required
to manage the various elements and their interactions.
New entity. These are entity types that are
typically found in your conceptual model.
Association