Document Relation

(1) A double click on the relation "place" opens a (meta) attribute editor window.
(2) The description field contains the global description of the relation. A relation (type) may be used as a connection between several different entities, which creates a different context. In such a context the relationship has also different properties: The cardinality of a relationship is such a model-related property. These properties are described later at the model level.
(3) The relation class is bound to the relation type.
The modeler documents the relation class but does not use it (yet). The primary purpose of the class is to allow applications to control the creation of relation instances.

... create Attributes