Messages on sequence diagrams can flow from either left to right or right to left. Focus of control: This illustrates the period of time during which an object is performing an action.

UAST support (since version 3.x) SequenceDiagram version 3.x will use UAST api to generate sequence diagram. Refer to 'The UAST description from IntelliJ Platform SDK' UAST (Unified Abstract Syntax ...