Case Management Model and NotationTM (CMMNTM) is a standard for graphically expressing case models in which all graphical elements have well defined meaning.

Check the Object Management Group webpage on CMMNTM for a precise description and related resources.

The two figures below shows semi-formally most of the concepts, their mutual relationships, and extension elements that are defined in the Camunda modeler.

The (partial) models are expressed using model elements of the Archimate Application Layer.