Navvia includes a subset of the most commonly used BPMN 2.0 symbols. This includes such symbols such as swim lanes, tasks, events, data objects and off page connectors.
Attached is a PDF that shows the Navvia supported BPMN 2.0 symbols.
Additional information on the Navvia Process Designer, including supported symbols, can be found at: https://support.navvia.com/support/solutions/articles/1000198965-introduction-to-drag-drop
Here as well is an image demonstrating Navvia's BPMN Palette in our Drag and Drop interface.