page_title: Capella (engineering)
section_title: Principles
hierarchical_section_title: Capella (engineering) / Principles
caption_attribution_description: English: Capella System Functional Dataflow Blank diagram example
context_page_description: Capella is an open-source solution for model-based systems engineering. Hosted at polarsys.org, this solution provides a process and tooling for graphical modeling of systems, hardware or software architectures, in accordance with the principles and recommendations defined by the Arcadia method. Capella is an initiative of PolarSys, one of several Eclipse Foundation working groups.
context_section_description: Capella comes with its own metamodel, which defines the language concepts the user can enable in a Capella project. The user creates an instance of this metamodel and can then view the model from various perspectives through diagrams, according to his/her concerns. The user can also, via the palette associated with diagrams, create new model elements. A Capella project consists of a model part ("melodymodeller") and a graphic part ("aird").
  When a Capella project is created, the workbench interface is presented to the user. It contains various areas:
  The "methodological browser" area, shows the user the various engineering phases for architecture modeling and shortcuts to create new diagrams within the given engineering phase; this view also facilitates the "transition" between engineering phases, so as to create links between phases and associated elements;
  The "semantic browser" area provides tools for navigating into the model: for each selected item in the "project" area or on a diagram, the semantic browser area will present the user all references for that element, that is, its capacity or reference relationships and all diagrams in which the element is involved;
  The "project" area is a more traditional view; it is a tree view of the Capella model, and contains all the semantic elements and diagrams created by the user;
  The "diagram" area presents a graphical view of an extract of the model and allows the user to edit the model. The user can create, modify or delete elements and can also change the organization or appearance of elements in the diagram;
  The "properties" area displays all the properties of a selected element in the model or in a diagram.
caption: Diagrams with set of tools
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