To add an attribute, operation, variable, function, or type to the diagram:
When an item of this type is added to a diagram, the graphic element will display by default, the element name, the stereotype applied (if there is one) or the metatype of the element, and the associated image (if one has been defined).
Like all diagram elements, the Features window for these elements can be opened by double-clicking the element in the diagram.
The connectors provided in the Diagram Tools can be used to connect individual elements of these types if the connection is semantically logical.
Once an element has been added to a diagram, the element can be added to a container element by dragging the element into the container element, for example, an attribute on the diagram can be dragged into a class.