Appear in stencils, menus and toolbars

Represent different concepts (process, activity, decision, etc.)

Instance of a shape (contains data)

Appear in the project navigator and on diagrams

The various sections of the workspace

Project navigator, stencils, main window, message window, etc.

Can be different for each shape.

Used to capture and maintain information about individual elements.

Used to display groups of elements in a Windows Explorer type view.

Examples include the project navigator, requirements tree and related elements tree.

Used to publish project file information in an externally usable format.